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O’Laughlin KN, Klabbers RE, Ebna Mannan I, Gentile NL, Geyer RE, Zheng Z, Yu H, Li SX, Chan KCG, Spatz ES, Wang RC, L’Hommedieu M, Weinstein RA, Plumb ID, Gottlieb M, Huebinger RM, Hagen M, Elmore JG, Hill MJ, Kelly M, McDonald S, Rising KL, Rodriguez RM, Venkatesh A, Idris AH, Santangelo M, Koo K, Saydah S, Nichol G, Stephens KA. Ethnic and racial differences in self-reported symptoms, health status, activity level, and missed work at 3 and 6 months following SARS-CoV-2 infection. Front Public Health 2024; 11:1324636. [PMID: 38352132 PMCID: PMC10861779 DOI: 10.3389/fpubh.2023.1324636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/12/2023] [Indexed: 02/16/2024] Open
Abstract
Introduction Data on ethnic and racial differences in symptoms and health-related impacts following SARS-CoV-2 infection are limited. We aimed to estimate the ethnic and racial differences in symptoms and health-related impacts 3 and 6 months after the first SARS-CoV-2 infection. Methods Participants included adults with SARS-CoV-2 infection enrolled in a prospective multicenter US study between 12/11/2020 and 7/4/2022 as the primary cohort of interest, as well as a SARS-CoV-2-negative cohort to account for non-SARS-CoV-2-infection impacts, who completed enrollment and 3-month surveys (N = 3,161; 2,402 SARS-CoV-2-positive, 759 SARS-CoV-2-negative). Marginal odds ratios were estimated using GEE logistic regression for individual symptoms, health status, activity level, and missed work 3 and 6 months after COVID-19 illness, comparing each ethnicity or race to the referent group (non-Hispanic or white), adjusting for demographic factors, social determinants of health, substance use, pre-existing health conditions, SARS-CoV-2 infection status, COVID-19 vaccination status, and survey time point, with interactions between ethnicity or race and time point, ethnicity or race and SARS-CoV-2 infection status, and SARS-CoV-2 infection status and time point. Results Following SARS-CoV-2 infection, the majority of symptoms were similar over time between ethnic and racial groups. At 3 months, Hispanic participants were more likely than non-Hispanic participants to report fair/poor health (OR: 1.94; 95%CI: 1.36-2.78) and reduced activity (somewhat less, OR: 1.47; 95%CI: 1.06-2.02; much less, OR: 2.23; 95%CI: 1.38-3.61). At 6 months, differences by ethnicity were not present. At 3 months, Other/Multiple race participants were more likely than white participants to report fair/poor health (OR: 1.90; 95% CI: 1.25-2.88), reduced activity (somewhat less, OR: 1.72; 95%CI: 1.21-2.46; much less, OR: 2.08; 95%CI: 1.18-3.65). At 6 months, Asian participants were more likely than white participants to report fair/poor health (OR: 1.88; 95%CI: 1.13-3.12); Black participants reported more missed work (OR, 2.83; 95%CI: 1.60-5.00); and Other/Multiple race participants reported more fair/poor health (OR: 1.83; 95%CI: 1.10-3.05), reduced activity (somewhat less, OR: 1.60; 95%CI: 1.02-2.51; much less, OR: 2.49; 95%CI: 1.40-4.44), and more missed work (OR: 2.25; 95%CI: 1.27-3.98). Discussion Awareness of ethnic and racial differences in outcomes following SARS-CoV-2 infection may inform clinical and public health efforts to advance health equity in long-term outcomes.
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Affiliation(s)
- Kelli N. O’Laughlin
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States
- Department of Global Health, University of Washington, Seattle, WA, United States
| | - Robin E. Klabbers
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States
- Department of Global Health, University of Washington, Seattle, WA, United States
| | - Imtiaz Ebna Mannan
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
| | - Nicole L. Gentile
- Department of Family Medicine, University of Washington, Seattle, WA, United States
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, United States
- Post-COVID Rehabilitation and Recovery Clinic, University of Washington, Seattle, WA, United States
| | - Rachel E. Geyer
- Department of Family Medicine, University of Washington, Seattle, WA, United States
| | - Zihan Zheng
- Department of Family Medicine, University of Washington, Seattle, WA, United States
| | - Huihui Yu
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, United States
| | - Shu-Xia Li
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
| | - Kwun C. G. Chan
- Department of Biostatistics, University of Washington, Seattle, WA, United States
- Department of Health Systems and Population Health, University of Washington, Seattle, WA, United States
| | - Erica S. Spatz
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, United States
- Department of Epidemiology, Yale School of Public Health, New Haven, CT, United States
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
| | - Ralph C. Wang
- Department of Emergency Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Michelle L’Hommedieu
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Robert A. Weinstein
- Divisions of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
- Department of Medicine, Cook County Hospital, Chicago, IL, United States
| | - Ian D. Plumb
- National Center for Immunizations and Respiratory Diseases, U.S. Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, United States
| | - Ryan M. Huebinger
- UTHealth Houston McGovern Medical School Department of Emergency Medicine, Houston, TX, United States
| | - Melissa Hagen
- National Center for Immunizations and Respiratory Diseases, U.S. Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Joann G. Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Mandy J. Hill
- UTHealth Houston McGovern Medical School Department of Emergency Medicine, Houston, TX, United States
| | - Morgan Kelly
- Department of Emergency Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Kristin L. Rising
- Department of Emergency Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
- Center for Connected Care, Thomas Jefferson University, Philadelphia, PA, United States
| | - Robert M. Rodriguez
- Department of Emergency Medicine, University of California San Francisco, San Francisco, CA, United States
| | - Arjun Venkatesh
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, CT, United States
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, United States
| | - Ahamed H. Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Michelle Santangelo
- Divisions of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
| | - Katherine Koo
- Divisions of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, U.S. Centers for Disease Control and Prevention, Atlanta, GA, United States
| | - Graham Nichol
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States
| | - Kari A. Stephens
- Department of Family Medicine, University of Washington, Seattle, WA, United States
- Biomedical Informatics and Medical Education, University of Washington, Seattle, WA, United States
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2
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Idris AH, Aramendi Ecenarro E, Leroux B, Jaureguibeitia X, Yang BY, Shaver S, Chang MP, Rea T, Kudenchuk P, Christenson J, Vaillancourt C, Callaway C, Salcido D, Carson J, Blackwood J, Wang HE. Bag-Valve-Mask Ventilation and Survival From Out-of-Hospital Cardiac Arrest: A Multicenter Study. Circulation 2023; 148:1847-1856. [PMID: 37952192 PMCID: PMC10840971 DOI: 10.1161/circulationaha.123.065561] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 08/28/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Few studies have measured ventilation during early cardiopulmonary resuscitation (CPR) before advanced airway placement. Resuscitation guidelines recommend pauses after every 30 chest compressions to deliver ventilations. The effectiveness of bag-valve-mask ventilation delivered during the pause in chest compressions is unknown. We sought to determine: (1) the incidence of lung inflation with bag-valve-mask ventilation during 30:2 CPR; and (2) the association of ventilation with outcomes after out-of-hospital cardiac arrest. METHODS We studied patients with out-of-hospital cardiac arrest from 6 sites of the Resuscitation Outcomes Consortium CCC study (Trial of Continuous Compressions versus Standard CPR in Patients with Out-of-Hospital Cardiac Arrest). We analyzed patients assigned to the 30:2 CPR arm with ≥2 minutes of thoracic bioimpedance signal recorded with a cardiac defibrillator/monitor. Detectable ventilation waveforms were defined as having a bioimpedance amplitude ≥0.5 Ω (corresponding to ≥250 mL VT) and a duration ≥1 s. We defined a chest compression pause as a 3- to 15-s break in chest compressions. We compared the incidence of ventilation and outcomes in 2 groups: patients with ventilation waveforms in <50% of pauses (group 1) versus those with waveforms in ≥50% of pauses (group 2). RESULTS Among 1976 patients, the mean age was 65 years; 66% were male. From the start of chest compressions until advanced airway placement, mean±SD duration of 30:2 CPR was 9.8±4.9 minutes. During this period, we identified 26 861 pauses in chest compressions; 60% of patients had ventilation waveforms in <50% of pauses (group 1, n=1177), and 40% had waveforms in ≥50% of pauses (group 2, n=799). Group 1 had a median of 12 pauses and 2 ventilations per patient versus group 2, which had 12 pauses and 12 ventilations per patient. Group 2 had higher rates of prehospital return of spontaneous circulation (40.7% versus 25.2%; P<0.0001), survival to hospital discharge (13.5% versus 4.1%; P<0.0001), and survival with favorable neurological outcome (10.6% versus 2.4%; P<0.0001). These associations persisted after adjustment for confounders. CONCLUSIONS In this study, lung inflation occurred infrequently with bag-valve-mask ventilation during 30:2 CPR. Lung inflation in ≥50% of pauses was associated with improved return of spontaneous circulation, survival, and survival with favorable neurological outcome.
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Affiliation(s)
- Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I, B.Y.Y., S.S., M.P.C.)
| | | | - Brian Leroux
- Department of Biostatistics (B.L., J.C.), University of Washington, Seattle
| | - Xabier Jaureguibeitia
- Department of Communications Engineering, University of the Basque Country, Bilbao, Spain (E.A.E., X.J.)
| | - Betty Y Yang
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I, B.Y.Y., S.S., M.P.C.)
| | - Sarah Shaver
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I, B.Y.Y., S.S., M.P.C.)
| | - Mary P Chang
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I, B.Y.Y., S.S., M.P.C.)
| | - Tom Rea
- Department of Medicine (Emergency Medicine) (T.R.), University of Washington, Seattle
| | - Peter Kudenchuk
- Department of Medicine (Cardiology) (P.K.), University of Washington, Seattle
| | - Jim Christenson
- Department of Biostatistics (B.L., J.C.), University of Washington, Seattle
- Department of Emergency Medicine, University of British Columbia, Vancouver, Canada (J.C.)
| | | | - Clifton Callaway
- Department of Emergency Medicine, University of Pittsburgh, PA (C.C., D.S.)
| | - David Salcido
- Department of Emergency Medicine, University of Pittsburgh, PA (C.C., D.S.)
| | | | - Jennifer Blackwood
- Public Health-Seattle & King County, Emergency Medical Services Division, Seattle, WA (J.B.)
| | - Henry E Wang
- Department of Emergency Medicine, The Ohio State University, Columbus (H.E.W.)
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3
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Montoy JCC, Ford J, Yu H, Gottlieb M, Morse D, Santangelo M, O’Laughlin KN, Schaeffer K, Logan P, Rising K, Hill MJ, Wisk LE, Salah W, Idris AH, Huebinger RM, Spatz ES, Rodriguez RM, Klabbers RE, Gatling K, Wang RC, Elmore JG, McDonald SA, Stephens KA, Weinstein RA, Venkatesh AK, Saydah S. Prevalence of Symptoms ≤12 Months After Acute Illness, by COVID-19 Testing Status Among Adults - United States, December 2020-March 2023. MMWR Morb Mortal Wkly Rep 2023; 72:859-865. [PMID: 37561663 PMCID: PMC10415002 DOI: 10.15585/mmwr.mm7232a2] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
To further the understanding of post-COVID conditions, and provide a more nuanced description of symptom progression, resolution, emergence, and reemergence after SARS-CoV-2 infection or COVID-like illness, analysts examined data from the Innovative Support for Patients with SARS-CoV-2 Infections Registry (INSPIRE), a prospective multicenter cohort study. This report includes analysis of data on self-reported symptoms collected from 1,296 adults with COVID-like illness who were tested for SARS-CoV-2 using a Food and Drug Administration-approved polymerase chain reaction or antigen test at the time of enrollment and reported symptoms at 3-month intervals for 12 months. Prevalence of any symptom decreased substantially between baseline and the 3-month follow-up, from 98.4% to 48.2% for persons who received a positive SARS-CoV-2 test results (COVID test-positive participants) and from 88.2% to 36.6% for persons who received negative SARS-CoV-2 test results (COVID test-negative participants). Persistent symptoms decreased through 12 months; no difference between the groups was observed at 12 months (prevalence among COVID test-positive and COVID test-negative participants = 18.3% and 16.1%, respectively; p>0.05). Both groups reported symptoms that emerged or reemerged at 6, 9, and 12 months. Thus, these symptoms are not unique to COVID-19 or to post-COVID conditions. Awareness that symptoms might persist for up to 12 months, and that many symptoms might emerge or reemerge in the year after COVID-like illness, can assist health care providers in understanding the clinical signs and symptoms associated with post-COVID-like conditions.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Innovative Support for Patients with SARS-CoV-2 Infections Registry (INSPIRE) Group
- Department of Emergency Medicine, University of California, San Francisco, San Francisco, California; Section of Cardiovascular Medicine, Department of Internal Medicine, Yale University, New Haven, Connecticut; Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut; Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois; Department of Emergency Medicine, University of Washington, Seattle, Washington; Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois; Department of Emergency Medicine, University of Washington, Seattle, Washington; Department of Global Health, University of Washington, Seattle, Washington; Department of Emergency Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania; National Center for Immunizations and Respiratory Diseases, CDC; Center for Connected Care, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Emergency Medicine, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania; UTHealth Houston, Houston, Texas; University of California, Los Angeles, Los Angeles, California; Department of Emergency Medicine, Yale University, New Haven, Connecticut; University of Texas Southwestern Medical Center, Dallas, Texas; Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California; Department of Health Policy and Management, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, California; Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas; Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, Texas; Department of Family Medicine, University of Washington, Seattle, Washington; Department of Biomedical Informatics and Medical Education, University of Washington, Seattle, Washington; Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois; Department of Medicine, Division of Infectious Diseases, Cook County Hospital, Chicago, Illinois; Department of Internal Medicine, Yale University, New Haven, Connecticut
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4
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Gottlieb M, Spatz ES, Yu H, Wisk LE, Elmore JG, Gentile NL, Hill M, Huebinger RM, Idris AH, Kean ER, Koo K, Li SX, McDonald S, Montoy JCC, Nichol G, O’Laughlin KN, Plumb ID, Rising KL, Santangelo M, Saydah S, Wang RC, Venkatesh A, Stephens KA, Weinstein RA. Long COVID Clinical Phenotypes up to 6 Months After Infection Identified by Latent Class Analysis of Self-Reported Symptoms. Open Forum Infect Dis 2023; 10:ofad277. [PMID: 37426952 PMCID: PMC10327879 DOI: 10.1093/ofid/ofad277] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 05/15/2023] [Indexed: 07/11/2023] Open
Abstract
Background The prevalence, incidence, and interrelationships of persistent symptoms after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection vary. There are limited data on specific phenotypes of persistent symptoms. Using latent class analysis (LCA) modeling, we sought to identify whether specific phenotypes of COVID-19 were present 3 months and 6 months post-infection. Methods This was a multicenter study of symptomatic adults tested for SARS-CoV-2 with prospectively collected data on general symptoms and fatigue-related symptoms up to 6 months postdiagnosis. Using LCA, we identified symptomatically homogenous groups among COVID-positive and COVID-negative participants at each time period for both general and fatigue-related symptoms. Results Among 5963 baseline participants (4504 COVID-positive and 1459 COVID-negative), 4056 had 3-month and 2856 had 6-month data at the time of analysis. We identified 4 distinct phenotypes of post-COVID conditions (PCCs) at 3 and 6 months for both general and fatigue-related symptoms; minimal-symptom groups represented 70% of participants at 3 and 6 months. When compared with the COVID-negative cohort, COVID-positive participants had higher occurrence of loss of taste/smell and cognition problems. There was substantial class-switching over time; those in 1 symptom class at 3 months were equally likely to remain or enter a new phenotype at 6 months. Conclusions We identified distinct classes of PCC phenotypes for general and fatigue-related symptoms. Most participants had minimal or no symptoms at 3 and 6 months of follow-up. Significant proportions of participants changed symptom groups over time, suggesting that symptoms present during the acute illness may differ from prolonged symptoms and that PCCs may have a more dynamic nature than previously recognized. Clinical Trials Registration. NCT04610515.
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Affiliation(s)
- Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Erica S Spatz
- Section of Cardiovascular Medicine, Yale School of Medicine,New Haven, Connecticut, USA
- Department of Epidemiology, Yale School of Public Health,New Haven, Connecticut, USA
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
| | - Huihui Yu
- Section of Cardiovascular Medicine, Yale School of Medicine,New Haven, Connecticut, USA
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
| | - Lauren E Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, USA
| | - Nicole L Gentile
- Post-COVID Rehabilitation and Recovery Clinic, Department of Family Medicine, Department of Laboratory Medicine and Pathology, University of Washington, Seattle, Washington, USA
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth, Houston, Texas, USA
| | | | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Efrat R Kean
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Katherine Koo
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Shu-Xia Li
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Juan Carlos C Montoy
- Department of Emergency Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Graham Nichol
- Departments of Medicine and Emergency Medicine, University of Washington, Seattle, Washington, USA
| | - Kelli N O’Laughlin
- Departments of Emergency Medicine and Global Health, University of Washington, Seattle, Washington, USA
| | - Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Kristin L Rising
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
- Center for Connected Care, Sidney Kimmel Medical School, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Michelle Santangelo
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Ralph C Wang
- Department of Emergency Medicine, University of California, San Francisco, San Francisco, California, USA
| | - Arjun Venkatesh
- Yale Center for Outcomes Research and Evaluation, Yale School of Medicine,New Haven, Connecticut, USA
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kari A Stephens
- Departments of Family Medicine, Biomedical Informatics and Medical Education, University of Washington, Seattle, Washington, USA
| | - Robert A Weinstein
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois, USA
- Department of Internal Medicine, Cook County Hospital, Chicago, Illinois, USA
- The CORE Center, Chicago, Illinois, USA
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5
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Wang RC, Gottlieb M, Montoy JCC, Rodriguez RM, Yu H, Spatz ES, Chandler CW, Elmore JG, Hannikainen PA, Chang AM, Hill M, Huebinger RM, Idris AH, Koo K, Li SX, McDonald S, Nichol G, O’Laughlin KN, Plumb ID, Santangelo M, Saydah S, Stephens KA, Venkatesh AK, Weinstein RA. Association Between SARS-CoV-2 Variants and Frequency of Acute Symptoms: Analysis of a Multi-institutional Prospective Cohort Study-December 20, 2020-June 20, 2022. Open Forum Infect Dis 2023; 10:ofad275. [PMID: 37426947 PMCID: PMC10327880 DOI: 10.1093/ofid/ofad275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/22/2023] [Indexed: 07/11/2023] Open
Abstract
Background While prior work examining severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants of concern focused on hospitalization and death, less is known about differences in clinical presentation. We compared the prevalence of acute symptoms across pre-Delta, Delta, and Omicron. Methods We conducted an analysis of the Innovative Support for Patients with SARS-CoV-2 Infections Registry (INSPIRE), a cohort study enrolling symptomatic SARS-CoV-2-positive participants. We determined the association between the pre-Delta, Delta, and Omicron time periods and the prevalence of 21 coronavirus disease 2019 (COVID-19) acute symptoms. Results We enrolled 4113 participants from December 2020 to June 2022. Pre-Delta vs Delta vs Omicron participants had increasing sore throat (40.9%, 54.6%, 70.6%; P < .001), cough (50.9%, 63.3%, 66.7%; P < .001), and runny noses (48.9%, 71.3%, 72.9%; P < .001). We observed reductions during Omicron in chest pain (31.1%, 24.2%, 20.9%; P < .001), shortness of breath (42.7%, 29.5%, 27.5%; P < .001), loss of taste (47.1%, 61.8%, 19.2%; P < .001), and loss of smell (47.5%, 55.6%, 20.0%; P < .001). After adjustment, those infected during Omicron had significantly higher odds of sore throat vs pre-Delta (odds ratio [OR], 2.76; 95% CI, 2.26-3.35) and Delta (OR, 1.96; 95% CI, 1.69-2.28). Conclusions Participants infected during Omicron were more likely to report symptoms of common respiratory viruses, such as sore throat, and less likely to report loss of smell and taste. Trial registration NCT04610515.
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Affiliation(s)
- Ralph C Wang
- Department of Emergency Medicine, University of California San Francisco, San Francisco, California, USA
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Juan Carlos C Montoy
- Department of Emergency Medicine, University of California San Francisco, San Francisco, California, USA
| | - Robert M Rodriguez
- Department of Emergency Medicine, University of California San Francisco, San Francisco, California, USA
| | - Huihui Yu
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Erica S Spatz
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Christopher W Chandler
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, USA
- Department of Health Policy and Management, Fielding School of Public Health, University of California Los Angeles, Los Angeles, California, USA
| | - Paavali A Hannikainen
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Anna Marie Chang
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ryan M Huebinger
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Katherine Koo
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
| | - Shu-Xia Li
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Graham Nichol
- Departments of Medicine and Emergency Medicine, University of Washington, Seattle, Washington, USA
| | - Kelli N O’Laughlin
- Departments of Emergency Medicine and Global Health, University of Washington, Seattle, Washington, USA
| | - Ian D Plumb
- Centers for Disease Control and Prevention, National Center for Immunizations and Respiratory Diseases, Atlanta, Georgia, USA
| | - Michelle Santangelo
- Division of Infectious Diseases, Department of Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Sharon Saydah
- Centers for Disease Control and Prevention, National Center for Immunizations and Respiratory Diseases, Atlanta, Georgia, USA
| | - Kari A Stephens
- Departments of Family Medicine and Biomedical Informatics & Medical Education, University of Washington, Seattle, Washington, USA
| | - Arjun K Venkatesh
- Center for Outcomes Research and Evaluation, Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Robert A Weinstein
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
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Gottlieb M, Wang RC, Yu H, Spatz ES, Montoy JCC, Rodriguez RM, Chang AM, Elmore JG, Hannikainen PA, Hill M, Huebinger RM, Idris AH, Lin Z, Koo K, McDonald S, O’Laughlin KN, Plumb ID, Santangelo M, Saydah S, Willis M, Wisk LE, Venkatesh A, Stephens KA, Weinstein RA. Severe Fatigue and Persistent Symptoms at 3 Months Following Severe Acute Respiratory Syndrome Coronavirus 2 Infections During the Pre-Delta, Delta, and Omicron Time Periods: A Multicenter Prospective Cohort Study. Clin Infect Dis 2023; 76:1930-1941. [PMID: 36705268 PMCID: PMC10249989 DOI: 10.1093/cid/ciad045] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 01/12/2023] [Accepted: 01/25/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Most research on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants focuses on initial symptomatology with limited longer-term data. We characterized prevalences of prolonged symptoms 3 months post-SARS-CoV-2 infection across 3 variant time-periods (pre-Delta, Delta, and Omicron). METHODS This multicenter prospective cohort study of adults with acute illness tested for SARS-CoV-2 compared fatigue severity, fatigue symptoms, organ system-based symptoms, and ≥3 symptoms across variants among participants with a positive ("COVID-positive") or negative SARS-CoV-2 test ("COVID-negative") at 3 months after SARS-CoV-2 testing. Variant periods were defined by dates with ≥50% dominant strain. We performed multivariable logistic regression modeling to estimate independent effects of variants adjusting for sociodemographics, baseline health, and vaccine status. RESULTS The study included 2402 COVID-positive and 821 COVID-negative participants. Among COVID-positives, 463 (19.3%) were pre-Delta, 1198 (49.9%) Delta, and 741 (30.8%) Omicron. The pre-Delta COVID-positive cohort exhibited more prolonged severe fatigue (16.7% vs 11.5% vs 12.3%; P = .017) and presence of ≥3 prolonged symptoms (28.4% vs 21.7% vs 16.0%; P < .001) compared with the Delta and Omicron cohorts. No differences were seen in the COVID-negatives across time-periods. In multivariable models adjusted for vaccination, severe fatigue and odds of having ≥3 symptoms were no longer significant across variants. CONCLUSIONS Prolonged symptoms following SARS-CoV-2 infection were more common among participants infected during pre-Delta than with Delta and Omicron; however, these differences were no longer significant after adjusting for vaccination status, suggesting a beneficial effect of vaccination on risk of long-term symptoms. Clinical Trials Registration. NCT04610515.
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Affiliation(s)
- Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Ralph C Wang
- Department of Emergency Medicine, University of California, San Francisco, California, USA
| | - Huihui Yu
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Erica S Spatz
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Epidemiology, Yale School of Public Health, New Haven, Connecticut, USA
| | - Juan Carlos C Montoy
- Department of Emergency Medicine, University of California, San Francisco, California, USA
| | - Robert M Rodriguez
- Department of Emergency Medicine, University of California – San Francisco School of Medicine, San Francisco, California, USA
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California – Los Angeles, Los Angeles, California, USA
| | - Paavali A Hannikainen
- Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ryan M Huebinger
- Department of Emergency Medicine, UTHealth Houston, Houston, Texas, USA
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Zhenqiu Lin
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Katherine Koo
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Kelli N O’Laughlin
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Michelle Santangelo
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
| | - Michael Willis
- Department of Global Health, University of Washington, Seattle, Washington, USA
| | - Lauren E Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine, University of California – Los Angeles, Los Angeles, California, USA
| | - Arjun Venkatesh
- Center for Outcomes Research and Evaluation, Yale School of Medicine, New Haven, Connecticut, USA
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut, USA
| | - Kari A Stephens
- Department of Biomedical Informatics and Medical Education, University of Washington, Seattle, Washington, USA
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, Washington, USA
| | - Robert A Weinstein
- Department of Medicine, Division of Infectious Diseases, Rush University Medical Center, Chicago, Illinois, USA
- Department of Medicine, Division of Infectious Diseases, Cook County Hospital, Chicago, Illinois, USA
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Jaureguibeitia X, Aramendi E, Wang HE, Idris AH. Impedance-based Ventilation Detection and Signal Quality Control during Out-of-Hospital Cardiopulmonary Resuscitation. IEEE J Biomed Health Inform 2023; PP. [PMID: 37028324 DOI: 10.1109/jbhi.2023.3253780] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Abstract
Feedback on ventilation could help improve cardiopulmonary resuscitation quality and survival from out-of-hospital cardiac arrest (OHCA). However, current technology that monitors ventilation during OHCA is very limited. Thoracic impedance (TI) is sensitive to air volume changes in the lungs, allowing ventilations to be identified, but is affected by artifacts due to chest compressions and electrode motion. This study introduces a novel algorithm to identify ventilations in TI during continuous chest compressions in OHCA. Data from 367 OHCA patients were included, and 2551 one-minute TI segments were extracted. Concurrent capnography data were used to annotate 20724 ground truth ventilations for training and evaluation. A three-step procedure was applied to each TI segment: First, bidirectional static and adaptive filters were applied to remove compression artifacts. Then, fluctuations potentially due to ventilations were located and characterized. Finally, a recurrent neural network was used to discriminate ventilations from other spurious fluctuations. A quality control stage was also developed to anticipate segments where ventilation detection could be compromised. The algorithm was trained and tested using 5-fold cross-validation, and outperformed previous solutions in the literature on the study dataset. The median (interquartile range, IQR) persegment and per-patient F1-scores were 89.1 (70.8-99.6) and 84.1 (69.0-93.9), respectively. The quality control stage identified most low performance segments. For the 50% of segments with highest quality scores, the median per-segment and per-patient F1-scores were 100.0 (90.9-100.0) and 94.3 (86.5-97.8). The proposed algorithm could allow reliable, quality-conditioned feedback on ventilation in the challenging scenario of continuous manual CPR in OHCA.
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Affiliation(s)
- Xabier Jaureguibeitia
- Department of Communications Engineering, University of the Basque Country UPV/EHU, Ingeniero Torres Quevedo Plaza, 1, Bilbao, Spain
| | - Elisabete Aramendi
- Department of Communications Engineering, University of the Basque Country UPV/EHU, Ingeniero Torres Quevedo Plaza, 1, Bilbao, Spain
| | | | - Ahamed H. Idris
- University of Texas Southwestern Medical Center, Dallas, TX, USA
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8
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Spatz ES, Gottlieb M, Wisk LE, Anderson J, Chang AM, Gentile NL, Hill MJ, Huebinger RM, Idris AH, Kinsman J, Koo K, Li SX, McDonald S, Plumb ID, Rodriguez R, Saydah S, Slovis B, Stephens KA, Unger ER, Wang RC, Yu H, Hota B, Elmore JG, Weinstein RA, Venkatesh A. Three-month symptom profiles among symptomatic adults with positive and negative SARS-CoV-2 tests: a prospective cohort study from the INSPIRE group. Clin Infect Dis 2022; 76:1559-1566. [PMID: 36573005 DOI: 10.1093/cid/ciac966] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 11/22/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Long-term symptoms following SARS-CoV-2 infection are a major concern, yet their prevalence is poorly understood. METHODS We conducted a prospective cohort study comparing adults with SARS-CoV-2 infection (COVID+) with adults who tested negative (COVID-), enrolled within 28 days of an FDA-approved SARS-CoV2 test result for active symptoms. Sociodemographic characteristics, symptoms of SARS-CoV-2 infection (assessed with the CDC Person Under Investigation Symptom List), and symptoms of post-infectious syndromes (i.e., fatigue, sleep quality, muscle/joint pains, unrefreshing sleep, and dizziness/fainting, assessed with CDC Short Symptom Screener for myalgic encephalomyelitis/chronic fatigue syndrome) were assessed at baseline and 3 months via electronic surveys sent via text or email. RESULTS Among the first 1,000 participants, 722 were COVID + and 278 were COVID-. Mean age was 41.5 (SD 15.2); 66.3% were female, 13.4% were Black, and 15.3% were Hispanic. At baseline, SARS-CoV-2 symptoms were more common in the COVID + group than the COVID - group. At 3-months, SARS-CoV-2 symptoms declined in both groups although were more prevalent in the COVID + group: upper respiratory symptoms/head/eyes/ears/nose/throat (HEENT; 37.3% vs 20.9%), constitutional (28.8% vs 19.4%), musculoskeletal (19.5% vs 14.7%), pulmonary (17.6% vs 12.2%), cardiovascular (10.0% vs 7.2%), and gastrointestinal (8.7% vs 8.3%); only 50.2% and 73.3% reported no symptoms at all. Symptoms of post-infectious syndromes were similarly prevalent among the COVID + and COVID - groups at 3 months. CONCLUSIONS Approximately half of COVID + participants, as compared with one-quarter of COVID - participants, had at least one SARS-CoV-2 symptom at 3 months, highlighting the need for future work to distinguish Long COVID.
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Affiliation(s)
- Erica S Spatz
- Section of Cardiovascular Medicine, Department of Medicine, Yale School of Medicine; Department of Epidemiology, Yale School of Public Health, New Haven, CT, USA
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Lauren E Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles (UCLA), Los Angeles, CA; Department of Health Policy and Management, Fielding School of Public Health at UCLA, Los Angeles, CA, USA
| | - Jill Anderson
- Harborview Center for Prehospital Emergency Care, University of Washington, Seattle, WA, USA
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Nicole L Gentile
- Departments of Family Medicine and Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Mandy J Hill
- Department of Emergency Medicine, UTHealth Houston, McGovern Medical School, Houston, TX, USA
| | - Ryan M Huebinger
- Department of Emergency Medicine, UTHealth Houston, McGovern Medical School, Houston, TX, USA
| | - Ahamed H Idris
- Dept. of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Jeremiah Kinsman
- Department of Emergency Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Katherine Koo
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Shu-Xia Li
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT; Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, CT, USA
| | - Samuel McDonald
- Department of Emergency Medicine, University of Texas Southwestern, Dallas, TX, USA
| | - Ian D Plumb
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Robert Rodriguez
- Department of Emergency Medicine, University of California, San Francisco, CA, USA
| | - Sharon Saydah
- National Center for Immunizations and Respiratory Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Benjamin Slovis
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, PA, USA
| | - Kari A Stephens
- Departments of Family Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle, WA, USA
| | - Elizabeth R Unger
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control & Prevention, Atlanta, GA, USA
| | - Ralph C Wang
- Department of Emergency Medicine, University of California, San Francisco, CA, USA
| | - Huihui Yu
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, CT; Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, CT, USA
| | - Bala Hota
- Chief Informatics Officer, Tendo Systems, Inc., San Francisco, CA, USA
| | - Joann G Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles (UCLA), Los Angeles, CA; Department of Health Policy and Management, Fielding School of Public Health at UCLA, Los Angeles, CA, USA
| | - Robert A Weinstein
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
| | - Arjun Venkatesh
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, CT, USA
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9
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Wisk LE, Gottlieb MA, Spatz ES, Yu H, Wang RC, Slovis BH, Saydah S, Plumb ID, O’Laughlin KN, Montoy JCC, McDonald SA, Lin Z, Lin JMS, Koo K, Idris AH, Huebinger RM, Hill MJ, Gentile NL, Chang AM, Anderson J, Hota B, Venkatesh AK, Weinstein RA, Elmore JG, Nichol G. Association of Initial SARS-CoV-2 Test Positivity With Patient-Reported Well-being 3 Months After a Symptomatic Illness. JAMA Netw Open 2022; 5:e2244486. [PMID: 36454572 PMCID: PMC9716377 DOI: 10.1001/jamanetworkopen.2022.44486] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
IMPORTANCE Long-term sequelae after symptomatic SARS-CoV-2 infection may impact well-being, yet existing data primarily focus on discrete symptoms and/or health care use. OBJECTIVE To compare patient-reported outcomes of physical, mental, and social well-being among adults with symptomatic illness who received a positive vs negative test result for SARS-CoV-2 infection. DESIGN, SETTING, AND PARTICIPANTS This cohort study was a planned interim analysis of an ongoing multicenter prospective longitudinal registry study (the Innovative Support for Patients With SARS-CoV-2 Infections Registry [INSPIRE]). Participants were enrolled from December 11, 2020, to September 10, 2021, and comprised adults (aged ≥18 years) with acute symptoms suggestive of SARS-CoV-2 infection at the time of receipt of a SARS-CoV-2 test approved by the US Food and Drug Administration. The analysis included the first 1000 participants who completed baseline and 3-month follow-up surveys consisting of questions from the 29-item Patient-Reported Outcomes Measurement Information System (PROMIS-29; 7 subscales, including physical function, anxiety, depression, fatigue, social participation, sleep disturbance, and pain interference) and the PROMIS Short Form-Cognitive Function 8a scale, for which population-normed T scores were reported. EXPOSURES SARS-CoV-2 status (positive or negative test result) at enrollment. MAIN OUTCOMES AND MEASURES Mean PROMIS scores for participants with positive COVID-19 tests vs negative COVID-19 tests were compared descriptively and using multivariable regression analysis. RESULTS Among 1000 participants, 722 (72.2%) received a positive COVID-19 result and 278 (27.8%) received a negative result; 406 of 998 participants (40.7%) were aged 18 to 34 years, 644 of 972 (66.3%) were female, 833 of 984 (84.7%) were non-Hispanic, and 685 of 974 (70.3%) were White. A total of 282 of 712 participants (39.6%) in the COVID-19-positive group and 147 of 275 participants (53.5%) in the COVID-19-negative group reported persistently poor physical, mental, or social well-being at 3-month follow-up. After adjustment, improvements in well-being were statistically and clinically greater for participants in the COVID-19-positive group vs the COVID-19-negative group only for social participation (β = 3.32; 95% CI, 1.84-4.80; P < .001); changes in other well-being domains were not clinically different between groups. Improvements in well-being in the COVID-19-positive group were concentrated among participants aged 18 to 34 years (eg, social participation: β = 3.90; 95% CI, 1.75-6.05; P < .001) and those who presented for COVID-19 testing in an ambulatory setting (eg, social participation: β = 4.16; 95% CI, 2.12-6.20; P < .001). CONCLUSIONS AND RELEVANCE In this study, participants in both the COVID-19-positive and COVID-19-negative groups reported persistently poor physical, mental, or social well-being at 3-month follow-up. Although some individuals had clinically meaningful improvements over time, many reported moderate to severe impairments in well-being 3 months later. These results highlight the importance of including a control group of participants with negative COVID-19 results for comparison when examining the sequelae of COVID-19.
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Affiliation(s)
- Lauren E. Wisk
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles
- Department of Health Policy and Management, Fielding School of Public Health at the University of California, Los Angeles, Los Angeles
| | - Michael A. Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, Illinois
| | - Erica S. Spatz
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
| | - Huihui Yu
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
| | - Ralph C. Wang
- Department of Emergency Medicine, University of California, San Francisco, San Francisco
| | - Benjamin H. Slovis
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Sharon Saydah
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Ian D. Plumb
- National Center for Immunization and Respiratory Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Kelli N. O’Laughlin
- Department of Emergency Medicine, University of Washington, Seattle
- Department of Global Health, University of Washington, Seattle
| | - Juan Carlos C. Montoy
- Department of Emergency Medicine, University of California, San Francisco, San Francisco
| | - Samuel A. McDonald
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
- Clinical Informatics Center, University of Texas Southwestern Medical Center, Dallas
| | - Zhenqiu Lin
- Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
| | - Jin-Mann S. Lin
- National Center for Emerging and Zoonotic Infectious Diseases, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Katherine Koo
- Department of Internal Medicine, Rush University Medical Center, Chicago, Illinois
| | - Ahamed H. Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Ryan M. Huebinger
- Department of Emergency Medicine, McGovern Medical School, UTHealth Houston, Houston, Texas
| | - Mandy J. Hill
- Department of Emergency Medicine, McGovern Medical School, UTHealth Houston, Houston, Texas
| | - Nicole L. Gentile
- Department of Family Medicine, University of Washington, Seattle
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jill Anderson
- Department of Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle
| | | | - Arjun K. Venkatesh
- Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
- Department of Emergency Medicine, Yale School of Medicine, New Haven, Connecticut
| | - Robert A. Weinstein
- Department of Medicine, Rush University Medical Center, Chicago, Illinois
- Division of Infectious Diseases, Cook County Health, Chicago, Illinois
| | - Joann G. Elmore
- Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California, Los Angeles, Los Angeles
- Department of Health Policy and Management, Fielding School of Public Health at the University of California, Los Angeles, Los Angeles
| | - Graham Nichol
- Department of Emergency Medicine, University of Washington, Seattle
- Department of Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle
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10
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Agusala V, Dale P, Khera R, Brown SP, Idris AH, Link MS, Mody P. Variation in coronary angiography use in Out-of-Hospital cardiac arrest. Resuscitation 2022; 181:79-85. [PMID: 36332772 DOI: 10.1016/j.resuscitation.2022.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 10/25/2022] [Accepted: 10/26/2022] [Indexed: 11/11/2022]
Abstract
INTRODUCTION Multiple studies have examined the association of early coronary angiography (CAG) among out-of-hospital cardiac arrest (OHCA) patients with conflicting results. However, patterns of use of CAG among OHCA patients in real-world settings are not well-described. METHODS Utilizing data from the Resuscitation Outcomes Consortium's Continuous Chest Compressions trial for our analysis, we stratified patients based on initial arrest rhythm and ST-elevation on initial post-resuscitation electrocardiogram (ECG) and examined the rates of CAG in resuscitated patients. We also examined the rates of CAG across different trial clusters in the overall study population as well as in pre-specified patient subgroups RESULTS: Of 26,148 patients in the CCC trial, 5,608 survived to hospital admission and were enrolled in the study. Among them, 26 % underwent CAG. Patients with ST-elevation underwent CAG at a significantly higher rate than patients presenting without ST-elevation (70 % vs 31 %, p < 0.001). Similarly, patients presenting with shockable rhythms underwent CAG more frequently compared with patients with non-shockable rhythms (28 % vs 5 %, p < 0.001). There was marked variation in CAG frequency across different trial clusters with the proportion of patients within a trial cluster receiving CAG ranging from 4 % - 41 %. The proportion varied more among patients with ST-elevation (16 % - 82 %) or initial shockable rhythm (11 % - 75 %) compared with no ST-elevation (2 % - 28 %) or initial non-shockable rhythm (0 % - 19 %). CONCLUSION Among a national cohort of OHCA patients, large variation in the use of CAG exists, highlighting the existing uncertainty regarding perceived benefit from early CAG in OHCA.
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Affiliation(s)
- Vijay Agusala
- University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Patrick Dale
- University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Rohan Khera
- Yale University School of Medicine, New Haven, CT, United States
| | - Siobhan P Brown
- University of Washington, Seattle, Washington, United States
| | - Ahamed H Idris
- University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Mark S Link
- University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Purav Mody
- University of Texas Southwestern Medical Center, Dallas, TX, United States.
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11
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Affiliation(s)
- Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8579, United States.
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12
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Turer RW, Smith GC, Mehkri Do F, Chou A, Fowler R, Idris AH, Lehmann CU, McDonald SA. Improving Emergency Medical Services Information Exchange: Methods for Automating Entity Resolution. Stud Health Technol Inform 2022; 291:17-26. [PMID: 35593755 DOI: 10.3233/shti220004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The 21st century has seen an enormous growth in emergency medical services (EMS) information technology systems, with corresponding accumulation of large volumes of data. Despite this growth, integration efforts between EMS-based systems and electronic health records, and public-sector databases have been limited due to inconsistent data structure, data missingness, and policy and regulatory obstacles. Efforts to integrate EMS systems have benefited from the evolving science of entity resolution and record linkage. In this chapter, we present the history and fundamentals of record linkage techniques, an overview of past uses of this technology in EMS, and a look into the future of record linkage techniques for integrating EMS data systems including the use of machine learning-based techniques.
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Affiliation(s)
- Robert W Turer
- University of Texas Southwestern Medical Center, Department of Emergency Medicine. Dallas, TX, USA.,University of Texas Southwestern Medical Center, Clinical Informatics Center. Dallas, TX, USA
| | - Graham C Smith
- University of Michigan Medical School, Department of Emergency Medicine. Ann Arbor, MI, USA
| | - Faroukh Mehkri Do
- University of Texas Southwestern Medical Center, Department of Emergency Medicine. Dallas, TX, USA
| | - Andrew Chou
- University of Texas Southwestern Medical Center, Department of Emergency Medicine. Dallas, TX, USA
| | - Ray Fowler
- University of Texas Southwestern Medical Center, Department of Emergency Medicine. Dallas, TX, USA
| | - Ahamed H Idris
- University of Texas Southwestern Medical Center, Department of Emergency Medicine. Dallas, TX, USA
| | - Christoph U Lehmann
- University of Texas Southwestern Medical Center, Clinical Informatics Center. Dallas, TX, USA.,University of Texas Southwestern Medical Center, Department of Pediatrics. Dallas, TX, USA
| | - Samuel A McDonald
- University of Texas Southwestern Medical Center, Department of Emergency Medicine. Dallas, TX, USA.,University of Texas Southwestern Medical Center, Clinical Informatics Center. Dallas, TX, USA
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13
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O’Laughlin KN, Thompson M, Hota B, Gottlieb M, Plumb ID, Chang AM, Wisk LE, Hall AJ, Wang RC, Spatz ES, Stephens KA, Huebinger RM, McDonald SA, Venkatesh A, Gentile N, Slovis BH, Hill M, Saydah S, Idris AH, Rodriguez R, Krumholz HM, Elmore JG, Weinstein RA, Nichol G. Study protocol for the Innovative Support for Patients with SARS-COV-2 Infections Registry (INSPIRE): A longitudinal study of the medium and long-term sequelae of SARS-CoV-2 infection. PLoS One 2022; 17:e0264260. [PMID: 35239680 PMCID: PMC8893622 DOI: 10.1371/journal.pone.0264260] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 02/05/2022] [Indexed: 12/26/2022] Open
Abstract
Background Reports on medium and long-term sequelae of SARS-CoV-2 infections largely lack quantification of incidence and relative risk. We describe the rationale and methods of the Innovative Support for Patients with SARS-CoV-2 Registry (INSPIRE) that combines patient-reported outcomes with data from digital health records to understand predictors and impacts of SARS-CoV-2 infection. Methods INSPIRE is a prospective, multicenter, longitudinal study of individuals with symptoms of SARS-CoV-2 infection in eight regions across the US. Adults are eligible for enrollment if they are fluent in English or Spanish, reported symptoms suggestive of acute SARS-CoV-2 infection, and if they are within 42 days of having a SARS-CoV-2 viral test (i.e., nucleic acid amplification test or antigen test), regardless of test results. Recruitment occurs in-person, by phone or email, and through online advertisement. A secure online platform is used to facilitate the collation of consent-related materials, digital health records, and responses to self-administered surveys. Participants are followed for up to 18 months, with patient-reported outcomes collected every three months via survey and linked to concurrent digital health data; follow-up includes no in-person involvement. Our planned enrollment is 4,800 participants, including 2,400 SARS-CoV-2 positive and 2,400 SARS-CoV-2 negative participants (as a concurrent comparison group). These data will allow assessment of longitudinal outcomes from SARS-CoV-2 infection and comparison of the relative risk of outcomes in individuals with and without infection. Patient-reported outcomes include self-reported health function and status, as well as clinical outcomes including health system encounters and new diagnoses. Results Participating sites obtained institutional review board approval. Enrollment and follow-up are ongoing. Conclusions This study will characterize medium and long-term sequelae of SARS-CoV-2 infection among a diverse population, predictors of sequelae, and their relative risk compared to persons with similar symptomatology but without SARS-CoV-2 infection. These data may inform clinical interventions for individuals with sequelae of SARS-CoV-2 infection.
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Affiliation(s)
- Kelli N. O’Laughlin
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States of America
- Department of Global Health, University of Washington, Seattle, WA, United States of America
- * E-mail:
| | - Matthew Thompson
- Department of Family Medicine, University of Washington, Seattle, WA, United States of America
| | - Bala Hota
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States of America
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, United States of America
| | - Ian D. Plumb
- Division of Viral Diseases, Centers for Disease Control and Prevention, Respiratory Viruses Branch, Atlanta, GA, United States of America
| | - Anna Marie Chang
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia PA, United States of America
| | - Lauren E. Wisk
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States of America
| | - Aron J. Hall
- Division of Viral Diseases, Centers for Disease Control and Prevention, Respiratory Viruses Branch, Atlanta, GA, United States of America
| | - Ralph C. Wang
- Department of Emergency Medicine, University of California, San Francisco, CA, United States of America
| | - Erica S. Spatz
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, United States of America
| | - Kari A. Stephens
- Department of Family Medicine, University of Washington, Seattle, WA, United States of America
| | - Ryan M. Huebinger
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, United States of America
| | - Samuel A. McDonald
- Department of Emergency Medicine and Clinical Informatics Center, UT Southwestern, Dallas, TX, United States of America
| | - Arjun Venkatesh
- Department of Emergency Medicine, Yale School of Medicine, New Haven, CT, United States of America
| | - Nikki Gentile
- Department of Family Medicine, University of Washington, Seattle, WA, United States of America
| | - Benjamin H. Slovis
- Department of Emergency Medicine, Thomas Jefferson University, Philadelphia PA, United States of America
| | - Mandy Hill
- Department of Emergency Medicine, UTHealth McGovern Medical School, Houston, TX, United States of America
| | - Sharon Saydah
- Division of Viral Diseases, Centers for Disease Control and Prevention, Respiratory Viruses Branch, Atlanta, GA, United States of America
| | - Ahamed H. Idris
- Department of Emergency Medicine and Clinical Informatics Center, UT Southwestern, Dallas, TX, United States of America
| | - Robert Rodriguez
- Department of Emergency Medicine, University of California, San Francisco, CA, United States of America
| | - Harlan M. Krumholz
- Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, United States of America
| | - Joann G. Elmore
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States of America
| | - Robert A. Weinstein
- Division of Infectious Diseases, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States of America
- Department of Medicine, Cook County Health, Chicago, IL, United States of America
| | - Graham Nichol
- Department of Emergency Medicine, University of Washington, Seattle, WA, United States of America
- Departments of Medicine, University of Washington, Seattle, WA, United States of America
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14
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Okubo M, Komukai S, Izawa J, Aufderheide TP, Benoit JL, Carlson JN, Daya MR, Hansen M, Idris AH, Le N, Lupton JR, Nichol G, Wang HE, Callaway CW. Association of Advanced Airway Insertion Timing and Outcomes After Out-of-Hospital Cardiac Arrest. Ann Emerg Med 2021; 79:118-131. [PMID: 34538500 DOI: 10.1016/j.annemergmed.2021.07.114] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 06/10/2021] [Accepted: 07/12/2021] [Indexed: 11/01/2022]
Abstract
STUDY OBJECTIVE While often prioritized in the resuscitation of patients with out-of-hospital cardiac arrest, the optimal timing of advanced airway insertion is unknown. We evaluated the association between the timing of advanced airway (laryngeal tube and endotracheal intubation) insertion attempt and survival to hospital discharge in adult out-of-hospital cardiac arrest. METHODS We performed a secondary analysis of the Pragmatic Airway Resuscitation Trial (PART), a clinical trial comparing the effects of laryngeal tube and endotracheal intubation on outcomes after adult out-of-hospital cardiac arrest. We stratified the cohort by randomized airway strategy (laryngeal tube or endotracheal intubation). Within each subset, we defined a time-dependent propensity score using patients, arrest, and emergency medical services systems characteristics. Using the propensity score, we matched each patient receiving an initial attempt of laryngeal tube or endotracheal intubation with a patient at risk of receiving laryngeal tube or endotracheal intubation attempt within the same minute. RESULTS Of 2,146 eligible patients, 1,091 (50.8%) and 1,055 (49.2%) were assigned to initial laryngeal tube and endotracheal intubation strategies, respectively. In the propensity score-matched cohort, timing of laryngeal tube insertion attempt was not associated with survival to hospital discharge: 0 to lesser than 5 minutes (risk ratio [RR]=1.35, 95% confidence interval [CI] 0.53 to 3.44); 5 to lesser than10 minutes (RR=1.07, 95% CI 0.66 to 1.73); 10 to lesser than 15 minutes (RR=1.17, 95% CI 0.60 to 2.31); or 15 to lesser than 20 minutes (RR=2.09, 95% CI 0.35 to 12.47) after advanced life support arrival. Timing of endotracheal intubation attempt was also not associated with survival: 0 to lesser than 5 minutes (RR=0.50, 95% CI 0.05 to 4.87); 5 to lesser than10 minutes (RR=1.20, 95% CI 0.51 to 2.81); 10 to lesser than15 minutes (RR=1.03, 95% CI 0.49 to 2.14); 15 to lesser than 20 minutes (RR=0.85, 95% CI 0.30 to 2.42); or more than/equal to 20 minutes (RR=0.71, 95% CI 0.07 to 7.14). CONCLUSION In the PART, timing of advanced airway insertion attempt was not associated with survival to hospital discharge.
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Affiliation(s)
- Masashi Okubo
- Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
| | - Sho Komukai
- Division of Biomedical Statistics, Department of Integrated Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Junichi Izawa
- Department of Internal Medicine, Okinawa Prefectural Yaeyama Hospital, Okinawa, Japan
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Justin L Benoit
- Department of Emergency Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jestin N Carlson
- Department of Emergency Medicine, Saint Vincent Hospital, Allegheny Health Network, Erie, PA, USA
| | - Mohamud R Daya
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Matthew Hansen
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Nancy Le
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Joshua R Lupton
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Graham Nichol
- University of Washington-Harborview Center for Prehospital Emergency Care, Seattle, WA, USA
| | - Henry E Wang
- Department of Emergency Medicine, The Ohio State University, Columbus, OH, USA
| | - Clifton W Callaway
- Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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15
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Jaureguibeitia X, Aramendi E, Irusta U, Alonso E, Aufderheide TP, Schmicker RH, Hansen M, Suchting R, Carlson JN, Idris AH, Wang HE. Methodology and framework for the analysis of cardiopulmonary resuscitation quality in large and heterogeneous cardiac arrest datasets. Resuscitation 2021; 168:44-51. [PMID: 34509553 DOI: 10.1016/j.resuscitation.2021.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 09/01/2021] [Accepted: 09/03/2021] [Indexed: 01/19/2023]
Abstract
BACKGROUND Out-of-hospital cardiac arrest (OHCA) data debriefing and clinical research often require the retrospective analysis of large datasets containing defibrillator files from different vendors and clinical annotations by the emergency medical services. AIM To introduce and evaluate a methodology to automatically extract cardiopulmonary resuscitation (CPR) quality data in a uniform and systematic way from OHCA datasets from multiple heterogeneous sources. METHODS A dataset of 2236 OHCA cases from multiple defibrillator models and manufacturers was analyzed. Chest compressions were automatically identified using the thoracic impedance and compression depth signals. Device event time-stamps and clinical annotations were used to set the start and end of the analysis interval, and to identify periods with spontaneous circulation. A manual audit of the automatic annotations was conducted and used as gold standard. Chest compression fraction (CCF), rate (CCR) and interruption ratio were computed as CPR quality variables. The unsigned error between the automated procedure and the gold standard was calculated. RESULTS Full-episode median errors below 2% in CCF, 1 min-1 in CCR, and 1.5% in interruption ratio, were measured for all signals and devices. The proportion of cases with large errors (>10% in CCF and interruption ratio, and >10 min-1 in CCR) was below 10%. Errors were lower for shorter sub-intervals of interest, like the airway insertion interval. CONCLUSIONS An automated methodology was validated to accurately compute CPR metrics in large and heterogeneous OHCA datasets. Automated processing of defibrillator files and the associated clinical annotations enables the aggregation and analysis of CPR data from multiple sources.
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Affiliation(s)
- Xabier Jaureguibeitia
- Communications Engineering Department, University of the Basque Country UPV/EHU, Bilbao, Spain
| | - Elisabete Aramendi
- Communications Engineering Department, University of the Basque Country UPV/EHU, Bilbao, Spain; Biocruces Bizkaia Health Research Institute, Barakaldo, Spain.
| | - Unai Irusta
- Communications Engineering Department, University of the Basque Country UPV/EHU, Bilbao, Spain; Biocruces Bizkaia Health Research Institute, Barakaldo, Spain
| | - Erik Alonso
- Department of Applied Mathematics, University of the Basque Country UPV/EHU, Bilbao, Spain
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Robert H Schmicker
- Clinical Trial Center, Department of Biostatistics, University of Washington, Seattle, WA, United States
| | - Matthew Hansen
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, United States
| | - Robert Suchting
- Department of Psychiatry and Behavioral, Sciences University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Jestin N Carlson
- Department of Emergency Medicine, Saint Vincent Hospital, Allegheny Health Network, Erie, PA, United States; Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Henry E Wang
- Department of Emergency Medicine, Ohio State University, Columbus, OH, United States
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16
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Schmicker RH, Nichol G, Kudenchuk P, Christenson J, Vaillancourt C, Wang HE, Aufderheide TP, Idris AH, Daya MR. CPR compression strategy 30:2 is difficult to adhere to, but has better survival than continuous chest compressions when done correctly. Resuscitation 2021; 165:31-37. [PMID: 34098033 DOI: 10.1016/j.resuscitation.2021.05.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 05/21/2021] [Accepted: 05/28/2021] [Indexed: 12/14/2022]
Abstract
BACKGROUND A large, randomized trial showed no significant difference in survival to discharge between cardiopulmonary resuscitation (CPR) strategies of 30 compressions with pause for 2 ventilations per cycle (30:2) and continuous chest compression with asynchronous ventilations (CCC). Data from the same trial suggested that adherence to the intended CPR strategy was associated with significantly greater survival. We sought to determine the adherence rate with intended strategy and then explore the association of adherence with survival to discharge in the Resuscitation Outcomes Consortium (ROC). METHODS This secondary analysis of data from the ROC included three interventional trials and a prospective registry. We modified an automated software algorithm that classified care as 30:2 or CCC before intubation based on compression segment length (defined as the elapsed time from start of compressions to subsequent pause of ≥2 s), number of pauses per minute ≥2 s in length and chest compression fraction. Intended CPR strategy for individual agencies was based on study randomization (during trial phase) or local standard of care (during registry phase). We defined CPR delivered as adherent when its classification matched the intended strategy. We characterized adherence with intended strategy across trial and registry periods. We examined its association with survival to hospital discharge using multivariate logistic regression after adjustment for Utstein and other potential confounders. Effect modification with intended strategy was assessed through a multiplicative interaction term. RESULTS Included were 26,810 adults with out of hospital cardiac arrest, of which 10,942 had an intended strategy of 30:2 and 15,868 an intended strategy of CCC. The automated algorithm classified 12,276 cases as CCC, 7037 as 30:2 and left 7497 as unclassified. Adherence to intended strategy was 54.4%; this differed by intended strategy (58.6% for CCC vs 48.3% for 30:2). Overall adherence was less during the registry phase as compared to during the trial phase(s). The association between adherence and survival was modified by treatment arm (CCC OR: 0.72, 95% CI: 0.64-0.81 vs 30:2 OR: 1.05, 95% CI: 0.90-1.22; interaction p-value<0.01) after adjustment for known confounders. CONCLUSION For intended strategy CCC, survival was significantly lower, OR (95%CI) = 0.72 (0.64, 0.81), when adhered to while for intended strategy 30:2, survival was higher, OR (95%CI) = 1.05 (0.90, 1.22), when adhered to. Intended strategy of 30:2 had lower adherence rates than CCC possibly a result of being a more difficult strategy to administer.
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Affiliation(s)
- Robert H Schmicker
- Center for Biomedical Statistics, University of Washington, Seattle, WA United States.
| | - Graham Nichol
- University of Washington-Harborview Center for Prehospital Emergency Care, Seattle, WA United States
| | - Peter Kudenchuk
- Department of Medicine, Division of Cardiology, University of Washington, Seattle, WA, United States; King County Emergency Medical Services, Public Health, Seattle & King County, WA, United States
| | - Jim Christenson
- Department of Emergency Medicine, University of British Columbia, Canada; Center for Health Evaluation and Outcome Sciences, Providence Health Care Research Institute, British Columbia, Canada
| | - Christian Vaillancourt
- Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Henry E Wang
- Department of Emergency Medicine, The Ohio State University, Columbus, OH, United States
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX United States
| | - Mohamud R Daya
- Department of Emergency Medicine, Oregon Health & Science University, Portland, OR United States
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17
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Schrading WA, Trent SA, Paxton JH, Rodriguez RM, Swanson MB, Mohr NM, Talan DA, Bahamon M, Carlson JN, Chisolm‐Straker M, Driver B, Faine B, Galbraith J, Giordano PA, Haran JP, Higgins A, Hinson J, House S, Idris AH, Kean E, Krebs E, Kurz MC, Lee L, Liang SY, Lim SC, Moran G, Nandi U, Pathmarajah K, Perez Y, Rothman R, Shuck J, Slev P, Smithline HA, Souffront K, Steele M, St. Romain M, Stubbs A, Tiao J, Torres JR, Uribe L, Venkat A, Volturo G, Wallace K, Weber KD. Vaccination rates and acceptance of SARS-CoV-2 vaccination among U.S. emergency department health care personnel. Acad Emerg Med 2021; 28:455-458. [PMID: 33608937 PMCID: PMC8013804 DOI: 10.1111/acem.14236] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Walter A. Schrading
- Department of Emergency Medicine University of Alabama at Birmingham Birmingham Alabama USA
| | - Stacy A. Trent
- Department of Emergency Medicine Denver Health Medical Center Denver Colorado USA
- Department of Emergency Medicine University of Colorado School of Medicine Aurora Colorado USA
| | - James H. Paxton
- Department of Emergency Medicine Wayne State University Detroit Michigan USA
| | - Robert M. Rodriguez
- Department of Emergency Medicine University of California, San Francisco San Francisco California USA
| | - Morgan B. Swanson
- Department of Emergency Medicine University of Iowa Carver College of Medicine Iowa City Iowa USA
| | - Nicholas M. Mohr
- Department of Emergency Medicine University of Iowa Carver College of Medicine Iowa City Iowa USA
| | - David A. Talan
- Department of Emergency Medicine University of Iowa Carver College of Medicine Iowa City Iowa USA
- Olive View–UCLA Education and Research Institute Los Angeles California USA
- Department of Emergency Medicine University of California‐Los Angeles Los Angeles California USA
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18
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Wang HE, Jaureguibeitia X, Aramendi E, Jarvis JL, Carlson JN, Irusta U, Alonso E, Aufderheide T, Schmicker RH, Hansen ML, Huebinger RM, Colella MR, Gordon R, Suchting R, Idris AH. Airway strategy and chest compression quality in the Pragmatic Airway Resuscitation Trial. Resuscitation 2021; 162:93-98. [PMID: 33582258 DOI: 10.1016/j.resuscitation.2021.01.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 01/15/2021] [Accepted: 01/28/2021] [Indexed: 11/18/2022]
Abstract
BACKGROUND Chest compression (CC) quality is associated with improved out-of-hospital cardiopulmonary arrest (OHCA) outcomes. Airway management efforts may adversely influence CC quality. We sought to compare the effects of initial laryngeal tube (LT) and initial endotracheal intubation (ETI) airway management strategies upon chest compression fraction (CCF), rate and interruptions in the Pragmatic Airway Resuscitation Trial (PART). METHODS We analyzed CPR process files collected from adult OHCA enrolled in PART. We used automated signal processing techniques and a graphical user interface to calculate CC quality measures and defined interruptions as pauses in chest compressions longer than 3 s. We determined CC fraction, rate and interruptions (number and total duration) for the entire resuscitation and compared differences between LT and ETI using t-tests. We repeated the analysis stratified by time before, during and after airway insertion as well as by successive 3-min time segments. We also compared CC quality between single vs. multiple airway insertion attempts, as well as between bag-valve-mask (BVM-only) vs. ETI or LT. RESULTS Of 3004 patients enrolled in PART, CPR process data were available for 1996 (1001 LT, 995 ETI). Mean CPR analysis duration were: LT 22.6 ± 10.8 min vs. ETI 25.3 ± 11.3 min (p < 0.001). Mean CC fraction (LT 88% vs. ETI 87%, p = 0.05) and rate (LT 114 vs. ETI 114 compressions per minute (cpm), p = 0.59) were similar between LT and ETI. Median number of CC interruptions were: LT 11 vs. ETI 12 (p = 0.001). Total CC interruption duration was lower for LT than ETI (LT 160 vs. ETI 181 s, p = 0.002); this difference was larger before airway insertion (LT 56 vs. ETI 78 s, p < 0.001). There were no differences in CC quality when stratified by 3-min time epochs. CONCLUSION In the PART trial, compared with ETI, LT was associated with shorter total CC interruption duration but not other CC quality measures. CC quality may be associated with OHCA airway management.
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Affiliation(s)
- Henry E Wang
- Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, United States.
| | - Xabier Jaureguibeitia
- Department of Communication Engineering, BioRes Group, University of the Basque Country, Bilbao, Spain
| | - Elisabete Aramendi
- Department of Communication Engineering, BioRes Group, University of the Basque Country, Bilbao, Spain
| | - Jeffrey L Jarvis
- Williamson County Emergency Medical Services, Georgetown, TX, United States; Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Jestin N Carlson
- Department of Emergency Medicine, The University of Pittsburgh, Pittsburgh, PA, United States
| | - Unai Irusta
- Department of Communication Engineering, BioRes Group, University of the Basque Country, Bilbao, Spain
| | - Erik Alonso
- Department of Applied Mathematics, University of the Basque Country, Bilbao, Spain
| | - Tom Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Robert H Schmicker
- Center for Biomedical Statistics, The University of Washington, Seattle, WA, United States
| | - Matthew L Hansen
- Department of Emergency Medicine, Oregon Health & Science University, Portland, OR, United States
| | - Ryan M Huebinger
- Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - M Riccardo Colella
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Richard Gordon
- Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Robert Suchting
- Department of Psychiatry and Behavioral Sciences, The University of Texas Health Science Center at Houston, Houston, TX, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States
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19
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Lesnick JA, Moore JX, Zhang Y, Jarvis J, Nichol G, Daya MR, Idris AH, Klug C, Dennis D, Carlson JN, Doshi P, Sopko G, Schmicker RH, Wang HE. Airway insertion first pass success and patient outcomes in adult out-of-hospital cardiac arrest: The Pragmatic Airway Resuscitation Trial. Resuscitation 2021; 158:151-156. [PMID: 33278521 PMCID: PMC7855546 DOI: 10.1016/j.resuscitation.2020.11.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 11/03/2020] [Accepted: 11/17/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE While emphasized in clinical practice, the association between advanced airway insertion first-pass success (FPS) and patient outcomes is incompletely understood. We sought to determine the association of airway insertion FPS with adult out-of-hospital cardiac arrest (OHCA) outcomes in the Pragmatic Airway Resuscitation Trial (PART). METHODS We performed a secondary analysis of PART, a multicenter clinical trial comparing LT and ETI upon adult OHCA outcomes. We defined FPS as successful LT insertion or ETI on the first attempt as reported by EMS personnel. We examined the outcomes return of spontaneous circulation (ROSC), 72-h survival, hospital survival, and hospital survival with favorable neurologic status (Modified Rankin Scale ≤3). Using multivariable GEE (generalized estimating equations), we determined the association between FPS and OHCA outcomes, adjusting for age, sex, witnessed arrest, bystander CPR, initial rhythm, and initial airway type. RESULTS Of 3004 patients enrolled in the trial, 1423 received LT, 1227 received ETI, 354 received bag-valve-mask ventilation only. FPS was: LT 86.2% and ETI 46.7%. FPS was associated with increased ROSC (aOR 1.23; 95%CI: 1.07-1.41)), but not 72-h survival (1.22; 0.94-1.58), hospital survival (0.90; 0.68-1.19) or hospital survival with favorable neurologic status (0.66; 0.37-1.19). CONCLUSION In adult OHCA, airway insertion FPS was associated with increased ROSC but not other OHCA outcomes. The influence of airway insertion FPS upon OHCA outcomes is unclear.
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Affiliation(s)
- Jason A Lesnick
- Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Justin X Moore
- Division of Epidemiology, Department of Population Health Sciences, Augusta University, Augusta, GA, USA
| | - Yefei Zhang
- Department of Biostatistics and Data Science, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Jeffrey Jarvis
- Williamson County Emergency Medical Services, Georgetown, TX, USA; Texas A&M Health Science Center, Temple, TX, USA
| | - Graham Nichol
- University of Washington[HYPHEN]Harborview Center for Prehospital Emergency Care, Departments of Medicine and Emergency Medicine, University of Washington, Seattle, WA, USA
| | - Mohamud R Daya
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Cameron Klug
- Legacy Meridian Park Medical Center. Tualatin, OR, USA
| | | | - Jestin N Carlson
- University of Pittsburgh, Pittsburgh, PA, USA; Department of Emergency Medicine, Saint Vincent Hospital, Allegheny Health Network, Erie, PA, USA
| | - Pratik Doshi
- Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - George Sopko
- National Institutes of Health, Bethesda, MD, USA
| | - Robert H Schmicker
- Department of Biostatistics, School of Public Health, University of Washington, Seattle, WA, USA
| | - Henry E Wang
- Department of Emergency Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA.
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20
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Gupta V, Schmicker RH, Owens P, Pierce AE, Idris AH. Software annotation of defibrillator files: Ready for prime time? Resuscitation 2020; 160:7-13. [PMID: 33388365 DOI: 10.1016/j.resuscitation.2020.12.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 11/16/2020] [Accepted: 12/15/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND High-quality chest compressions are associated with improved outcomes after cardiac arrest. Defibrillators record important information about chest compressions during cardiopulmonary resuscitation (CPR) and can be used in quality-improvement programs. Defibrillator review software can automatically annotate files and measure chest compression metrics. However, evidence is limited regarding the accuracy of such measurements. OBJECTIVE To compare chest compression fraction (CCF) and rate measurements made with software annotation vs. manual annotation vs. limited manual annotation of defibrillator files recorded during out-of-hospital cardiac arrest (OHCA) CPR. METHODS This was a retrospective, observational study of 100 patients who had CPR for OHCA. We assessed chest compression bioimpedance waveforms from the time of initial CPR until defibrillator removal. A reviewer revised software annotations in two ways: completely manual annotations and limited manual annotations, which marked the beginning and end of CPR and ROSC, but not chest compressions. Measurements were compared for CCF and rate using intraclass correlation coefficient (ICC) analysis. RESULTS Case mean rate showed no significant difference between the methods (108.1-108.6 compressions per minute) and ICC was excellent (>0.90). The case mean (±SD) CCF for software, manual, and limited manual annotation was 0.64 ± 0.19, 0.86 ± 0.07, and 0.81 ± 0.10, respectively. The ICC for manual vs. limited manual annotation of CCF was 0.69 while for individual minute epochs it was 0.83. CONCLUSION Software annotation performed very well for chest compression rate. For CCF, the difference between manual and software annotation measurements was clinically important, while manual vs. limited manual annotation were similar with an ICC that was good-to-excellent.
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Affiliation(s)
- Vishal Gupta
- University of Texas Southwestern Medical School, 5323 Harry Hines Blvd, Dallas, TX 75390-8579, United States
| | - Robert H Schmicker
- Center for Biomedical Statistics, University of Washington, Seattle, WA 98195, United States
| | - Pamela Owens
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8579, United States
| | - Ava E Pierce
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8579, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8579, United States.
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21
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Mody P, Pandey A, Slutsky AS, Segar MW, Kiss A, Dorian P, Parsons J, Scales DC, Rac VE, Cheskes S, Bierman AS, Abramson BL, Gray S, Fowler RA, Dainty KN, Idris AH, Morrison L. Gender-Based Differences in Outcomes Among Resuscitated Patients With Out-of-Hospital Cardiac Arrest. Circulation 2020; 143:641-649. [PMID: 33317326 DOI: 10.1161/circulationaha.120.050427] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Studies examining gender-based differences in outcomes of patients experiencing out-of-hospital cardiac arrest have demonstrated that, despite a higher likelihood of return of spontaneous circulation, women do not have higher survival. METHODS Patients successfully resuscitated from out-of-hospital cardiac arrest enrolled in the CCC trial (Trial of Continuous or Interrupted Chest Compressions during CPR) were included. Hierarchical multivariable logistic regression models were constructed to evaluate the association between gender and survival after adjustment for age, gender, cardiac arrest rhythm, witnessed status, bystander cardiopulmonary resuscitation, episode location, epinephrine dose, emergency medical services response time, and duration of resuscitation. Do not resuscitate (DNR) and withdrawal of life-sustaining therapy (WLST) order status were used to assess whether differences in postresuscitation outcomes were modified by baseline prognosis. The analysis was replicated among ALPS trial (Amiodarone, Lidocaine, or Placebo in Out-of-Hospital Cardiac Arrest) participants. RESULTS Among 4875 successfully resuscitated patients, 1825 (37.4%) were women and 3050 (62.6%) were men. Women were older (67.5 versus 65.3 years), received less bystander cardiopulmonary resuscitation (49.1% versus 54.9%), and had a lower proportion of cardiac arrests that were witnessed (55.1% versus 64.5%) or had shockable rhythm (24.3% versus 44.6%, P<0.001 for all). A significantly higher proportion of women received DNR orders (35.7% versus 32.1%, P=0.009) and had WLST (32.8% versus 29.8%, P=0.03). Discharge survival was significantly lower in women (22.5% versus 36.3%, P<0.001; adjusted odds ratio, 0.78 [95% CI, 0.66-0.93]; P=0.005). The association between gender and survival to discharge was modified by DNR and WLST order status such that women had significantly reduced survival to discharge among patients who were not designated DNR (31.3% versus 49.9%, P=0.005; adjusted odds ratio, 0.74 [95% CI, 0.60-0.91]) or did not have WLST (32.3% versus 50.7%, P=0.002; adjusted odds ratio, 0.73 [95% CI, 0.60-0.89]). In contrast, no gender difference in survival was noted among patients receiving a DNR order (6.7% versus 7.4%, P=0.90) or had WLST (2.8% versus 2.4%, P=0.93). Consistent patterns of association between gender and postresuscitation outcomes were observed in the secondary cohort. CONCLUSIONS Among patients resuscitated after experiencing out-of-hospital cardiac arrest, discharge survival was significantly lower in women than in men, especially among patients considered to have a favorable prognosis.
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Affiliation(s)
- Purav Mody
- Division of Cardiology, Department of Internal Medicine (P.M., A.P., M.W.S.), University of Texas Southwestern Medical Center, Dallas.,VA North Texas Health System, Dallas (P.M.)
| | - Ambarish Pandey
- Division of Cardiology, Department of Internal Medicine (P.M., A.P., M.W.S.), University of Texas Southwestern Medical Center, Dallas
| | - Arthur S Slutsky
- Keenan Research Center for Biomedical Science at the Li Ka Shing Knowledge Institute, St. Michael's Hospital, Departments of Medicine, Surgery, and Biomedical Engineering, Interdepartmental Division of Critical Care (A.S.S.), University of Toronto, Ontario, Canada
| | - Matthew W Segar
- Division of Cardiology, Department of Internal Medicine (P.M., A.P., M.W.S.), University of Texas Southwestern Medical Center, Dallas
| | - Alex Kiss
- Evaluative Clinical Sciences, Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Institute for Health Policy and Management (A.K.), University of Toronto, Ontario, Canada
| | - Paul Dorian
- Division of Cardiology, St Michael's Hospital, Division of Cardiology, Department of Medicine, Faculty of Medicine, Institute of Medical Sciences (P.D.), University of Toronto, Ontario, Canada
| | - Janet Parsons
- Applied Health Research Centre at the Li Ka Shing Knowledge Institute, St Michael's Hospital, Department of Physical Therapy and the Rehabilitation Sciences Institute (J.P.), University of Toronto, Ontario, Canada
| | - Damon C Scales
- Sunnybrook Health Sciences Center, Interdepartmental Division of Critical Care Medicine, Faculty of Medicine, Institute for Health Policy and Management (D.C.S.), University of Toronto, Ontario, Canada
| | - Valeria E Rac
- Ted Rogers Centre for Heart Research and Peter Munk Cardiac Centre and Toronto General Hospital Research Institute, Toronto Health Economics and Technology Assessment (THETA) Collaborative, Institute of Health Policy, Management and Evaluation (V.E.R.), University of Toronto, Ontario, Canada
| | - Sheldon Cheskes
- Sunnybrook Centre for Prehospital Medicine, Division of Emergency Medicine, Department of Family and Community Medicine (S.C.), University of Toronto, Ontario, Canada
| | - Arlene S Bierman
- Centre for Practice Improvement, Agency for Healthcare Research and Quality, Rockville, MD (A.S.B.)
| | - Beth L Abramson
- Division of Cardiology, St Michael's Hospital, Division of Cardiology, Department of Medicine, Faculty of Medicine (B.L.A.), University of Toronto, Ontario, Canada
| | - Sara Gray
- Emergency Medicine and Critical Care, St Michael's Hospital, Division of Emergency Medicine, Department of Medicine, Interdepartmental Division of Critical Care, Faculty of Medicine (S.G.), University of Toronto, Ontario, Canada
| | - Rob A Fowler
- Sunnybrook Health Sciences Center, Interdepartmental Division of Critical Care Medicine, Faculty of Medicine, Institute for Health Policy and Management (R.A.F.), University of Toronto, Ontario, Canada
| | - Katie N Dainty
- North York General Hospital, Institute for Health Policy and Management (K.N.D.), University of Toronto, Ontario, Canada
| | - Ahamed H Idris
- Department of Emergency Medicine (A.H.I.), University of Texas Southwestern Medical Center, Dallas
| | - Laurie Morrison
- Rescu at the Li Ka Shing Knowledge Institute, Emergency Medicine, St. Michael's Hospital, Division of Emergency Medicine, Department of Medicine, Faculty of Medicine, Institute for Health Policy and Management (L.M.), University of Toronto, Ontario, Canada
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22
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Isasi I, Irusta U, Aramendi E, Idris AH, Sörnmo L. Restoration of the electrocardiogram during mechanical cardiopulmonary resuscitation. Physiol Meas 2020; 41:105006. [DOI: 10.1088/1361-6579/ab9e53] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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23
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Rowell SE, Meier EN, McKnight B, Kannas D, May S, Sheehan K, Bulger EM, Idris AH, Christenson J, Morrison LJ, Frascone RJ, Bosarge PL, Colella MR, Johannigman J, Cotton BA, Callum J, McMullan J, Dries DJ, Tibbs B, Richmond NJ, Weisfeldt ML, Tallon JM, Garrett JS, Zielinski MD, Aufderheide TP, Gandhi RR, Schlamp R, Robinson BRH, Jui J, Klein L, Rizoli S, Gamber M, Fleming M, Hwang J, Vincent LE, Williams C, Hendrickson A, Simonson R, Klotz P, Sopko G, Witham W, Ferrara M, Schreiber MA. Effect of Out-of-Hospital Tranexamic Acid vs Placebo on 6-Month Functional Neurologic Outcomes in Patients With Moderate or Severe Traumatic Brain Injury. JAMA 2020; 324:961-974. [PMID: 32897344 PMCID: PMC7489866 DOI: 10.1001/jama.2020.8958] [Citation(s) in RCA: 134] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
IMPORTANCE Traumatic brain injury (TBI) is the leading cause of death and disability due to trauma. Early administration of tranexamic acid may benefit patients with TBI. OBJECTIVE To determine whether tranexamic acid treatment initiated in the out-of-hospital setting within 2 hours of injury improves neurologic outcome in patients with moderate or severe TBI. DESIGN, SETTING, AND PARTICIPANTS Multicenter, double-blinded, randomized clinical trial at 20 trauma centers and 39 emergency medical services agencies in the US and Canada from May 2015 to November 2017. Eligible participants (N = 1280) included out-of-hospital patients with TBI aged 15 years or older with Glasgow Coma Scale score of 12 or less and systolic blood pressure of 90 mm Hg or higher. INTERVENTIONS Three interventions were evaluated, with treatment initiated within 2 hours of TBI: out-of-hospital tranexamic acid (1 g) bolus and in-hospital tranexamic acid (1 g) 8-hour infusion (bolus maintenance group; n = 312), out-of-hospital tranexamic acid (2 g) bolus and in-hospital placebo 8-hour infusion (bolus only group; n = 345), and out-of-hospital placebo bolus and in-hospital placebo 8-hour infusion (placebo group; n = 309). MAIN OUTCOMES AND MEASURES The primary outcome was favorable neurologic function at 6 months (Glasgow Outcome Scale-Extended score >4 [moderate disability or good recovery]) in the combined tranexamic acid group vs the placebo group. Asymmetric significance thresholds were set at 0.1 for benefit and 0.025 for harm. There were 18 secondary end points, of which 5 are reported in this article: 28-day mortality, 6-month Disability Rating Scale score (range, 0 [no disability] to 30 [death]), progression of intracranial hemorrhage, incidence of seizures, and incidence of thromboembolic events. RESULTS Among 1063 participants, a study drug was not administered to 96 randomized participants and 1 participant was excluded, resulting in 966 participants in the analysis population (mean age, 42 years; 255 [74%] male participants; mean Glasgow Coma Scale score, 8). Of these participants, 819 (84.8%) were available for primary outcome analysis at 6-month follow-up. The primary outcome occurred in 65% of patients in the tranexamic acid groups vs 62% in the placebo group (difference, 3.5%; [90% 1-sided confidence limit for benefit, -0.9%]; P = .16; [97.5% 1-sided confidence limit for harm, 10.2%]; P = .84). There was no statistically significant difference in 28-day mortality between the tranexamic acid groups vs the placebo group (14% vs 17%; difference, -2.9% [95% CI, -7.9% to 2.1%]; P = .26), 6-month Disability Rating Scale score (6.8 vs 7.6; difference, -0.9 [95% CI, -2.5 to 0.7]; P = .29), or progression of intracranial hemorrhage (16% vs 20%; difference, -5.4% [95% CI, -12.8% to 2.1%]; P = .16). CONCLUSIONS AND RELEVANCE Among patients with moderate to severe TBI, out-of-hospital tranexamic acid administration within 2 hours of injury compared with placebo did not significantly improve 6-month neurologic outcome as measured by the Glasgow Outcome Scale-Extended. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT01990768.
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Affiliation(s)
- Susan E Rowell
- Department of Surgery, Oregon Health & Science University, Portland
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina
| | - Eric N Meier
- Department of Biostatistics, University of Washington, Seattle
| | | | - Delores Kannas
- Department of Biostatistics, University of Washington, Seattle
| | - Susanne May
- Department of Biostatistics, University of Washington, Seattle
| | - Kellie Sheehan
- Department of Biostatistics, University of Washington, Seattle
| | | | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Jim Christenson
- Department of Emergency Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- Providence Health Care Research Institute, Vancouver, British Columbia, Canada
| | - Laurie J Morrison
- Rescu, Li Ka Shing Knowledge Institute, St Michael's Hospital, Toronto, Ontario, Canada
- Division of Emergency Medicine, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Ralph J Frascone
- Department of Emergency Medicine, Regions Hospital, St Paul, Minnesota
| | - Patrick L Bosarge
- Department of Surgery, University of Alabama, Birmingham
- Department of Surgery, University of Arizona, Phoenix
| | - M Riccardo Colella
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee
| | - Jay Johannigman
- Department of Surgery, University of Cincinnati, Cincinnati, Ohio
| | - Bryan A Cotton
- Department of Surgery, McGovern Medical School, University of Texas Health Science Center, Houston
| | - Jeannie Callum
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Jason McMullan
- Department of Emergency Medicine, University of Cincinnati, Cincinnati, Ohio
| | - David J Dries
- Department of Surgery, Regions Hospital, St Paul, Minnesota
| | - Brian Tibbs
- Trauma Surgery, Texas Health Presbyterian Hospital, Dallas
| | - Neal J Richmond
- Department of Emergency Medicine, John Peter Smith Health Network, Ft Worth, Texas
| | | | - John M Tallon
- Department of Emergency Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- British Columbia Emergency Health Services, Vancouver, British Columbia, Canada
| | - John S Garrett
- Department of Emergency Medicine, Baylor University Medical Center, Dallas, Texas
| | | | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee
| | - Rajesh R Gandhi
- Department of Surgery, John Peter Smith Health Network, Ft Worth, Texas
| | - Rob Schlamp
- British Columbia Emergency Health Services, Vancouver, British Columbia, Canada
| | | | - Jonathan Jui
- Department of Emergency Medicine, Oregon Health & Science University, Portland, Oregon
| | - Lauren Klein
- Department of Emergency Medicine, Hennepin County Medical Center, Minneapolis, Minnesota
| | - Sandro Rizoli
- Department of Surgery, St Michael's Hospital, Toronto, Ontario, Canada
| | - Mark Gamber
- Department of Emergency Medicine, Medical City Plano, Plano, Texas
| | - Michael Fleming
- Department of Surgery, Oregon Health & Science University, Portland
| | - Jun Hwang
- Department of Biostatistics, University of Washington, Seattle
| | - Laura E Vincent
- Department of Surgery, McGovern Medical School, University of Texas Health Science Center, Houston
| | | | - Audrey Hendrickson
- Department of Emergency Medicine, Hennepin County Medical Center, Minneapolis, Minnesota
| | - Robert Simonson
- Emergency Medicine, Methodist Dallas Medical Center, Dallas, Texas
| | - Patricia Klotz
- Department of Surgery, University of Washington, Seattle
| | - George Sopko
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - William Witham
- Trauma Surgery, Texas Health Harris Methodist Hospital, Ft Worth
| | - Michael Ferrara
- Department of Emergency Medicine, Baylor University Medical Center, Dallas, Texas
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24
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Vaillancourt C, Petersen A, Meier EN, Christenson J, Menegazzi JJ, Aufderheide TP, Nichol G, Berg R, Callaway CW, Idris AH, Davis D, Fowler R, Egan D, Andrusiek D, Buick JE, Bishop TJ, Colella MR, Sahni R, Stiell IG, Cheskes S. The impact of increased chest compression fraction on survival for out-of-hospital cardiac arrest patients with a non-shockable initial rhythm. Resuscitation 2020; 154:93-100. [PMID: 32574654 DOI: 10.1016/j.resuscitation.2020.06.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/06/2020] [Accepted: 06/01/2020] [Indexed: 10/24/2022]
Abstract
OBJECTIVE We evaluated the effect of chest compression fraction (CCF) on survival to hospital discharge and return of spontaneous circulation (ROSC) in out-of-hospital cardiac arrest (OHCA) patients with non-shockable rhythms. METHODS This is a retrospective analysis (completed in 2016) of a prospective cohort study which included OHCA patients from ten U.S. and Canadian sites (Resuscitation Outcomes Consortium Epistry and PRIMED study (2007-2011)). We included all OHCA victims of presumed cardiac aetiology, not witnessed by emergency medical services (EMS), without automated external defibrillator shock prior to EMS arrival, receiving > 1 min of CPR with CPR process measures available, and initial non-shockable rhythm. We measured CCF using the first 5 min of electronic CPR records. RESULTS Demographics of 12,928 adult patients were: mean age 68; male 59.9%; public location 8.5%; bystander witnessed 35.2%; bystander CPR 39.3%; median interval from 911 to defibrillator turned on 10 min:04 s; initial rhythm asystole 64.8%, PEA 26.0%, other non-shockable 9.2%; compression rate 80-120/min (69.1%); median CCF 74%; ROSC 25.6%; survival to hospital discharge 2.4%. Adjusted odds ratio (OR); 95% confidence intervals (95%CI) of survival for each CCF category were: 0-40% (2.00; 1.16, 3.32); 41-60% (0.83; 0.54, 1.24); 61-80% (1.02; 0.77, 1.35); and 81-100% (reference group). Adjusted (OR; 95%CI) of ROSC for each CCF category were: 0-40% (1.02; 0.79, 1.30); 41-60% (0.83; 0.72, 0.95); 61-80% (0.85; 0.77, 0.94); and 81-100% (reference group). CONCLUSIONS We observed an incremental benefit from higher CCF on the incidence of ROSC, but not survival, among non-shockable OHCA patients with CCF higher than 40%.
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Affiliation(s)
- Christian Vaillancourt
- Department of Emergency Medicine and Ottawa Hospital Research Institute, University of Ottawa, ON, Canada.
| | - Ashley Petersen
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, US
| | - Eric N Meier
- Department of Biostatistics, University of Washington, Seattle, WA, US
| | | | | | | | | | - Robert Berg
- University of Pennsylvania, The Children's Hospital of Philadelphia, PA, US
| | | | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, US
| | - Daniel Davis
- Air Methods Corporation, Greenwood Village, CO, US
| | - Raymond Fowler
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, US
| | - Debra Egan
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, MD, US
| | | | - Jason E Buick
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
| | - T J Bishop
- Lake Chelan Community Hospital EMS, Chelan, WA, US
| | - M Riccardo Colella
- Departments of Emergency Medicine, Pediatrics and the Institute for Health and Equity, Medical College of Wisconsin, Milwaukee, WI, US
| | - Ritu Sahni
- Clackamas County EMS, Oregon City, OR, US
| | - Ian G Stiell
- Department of Emergency Medicine and Ottawa Hospital Research Institute, University of Ottawa, ON, Canada
| | - Sheldon Cheskes
- Department of Family and Community Medicine, Division of Emergency Medicine, University of Toronto, Toronto, ON, Canada
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25
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Lupton JR, Schmicker RH, Stephens S, Carlson JN, Callaway C, Herren H, Idris AH, Sopko G, Puyana JCJ, Daya MR, Wang H, Hansen M. Outcomes With the Use of Bag-Valve-Mask Ventilation During Out-of-hospital Cardiac Arrest in the Pragmatic Airway Resuscitation Trial. Acad Emerg Med 2020; 27:366-374. [PMID: 32220129 DOI: 10.1111/acem.13927] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 10/22/2019] [Accepted: 10/26/2019] [Indexed: 11/27/2022]
Abstract
BACKGROUND While emergency medical services (EMS) often use endotracheal intubation (ETI) or supraglottic airways (SGA), some patients receive only bag-valve-mask (BVM) ventilation during out-of-hospital cardiac arrests (OHCA). Our objective was to compare patient characteristics and outcomes for BVM ventilation to advanced airway management (AAM) in adults with OHCA. METHODS Using data from the Pragmatic Airway Resuscitation Trial, we identified patients receiving AAM (ETI or a SGA), BVM ventilation only (BVM-only), and BVM ventilation as a rescue after at least one failed attempt at advanced airway placement (BVM-rescue). The outcomes were return of spontaneous circulation (ROSC), 72-hour survival, survival to hospital discharge, neurologically intact survival (Modified Rankin Scale ≤ 3), and the presence of aspiration on a chest radiograph. Comparisons were made using generalized mixed-effects models while adjusting for age, sex, initial rhythm, EMS-witnessed status, bystander cardiopulmonary resuscitation, response time, study cluster, and advanced life support first on scene. RESULTS Of 3,004 patients enrolled, there were 282 BVM-only, 2,129 AAM, and 156 BVM-rescue patients with complete covariates. Shockable initial rhythms (34% vs. 18.6%) and EMS-witnessed arrests (21.6% vs. 11.3%) were more likely in BVM-only than AAM but similar between BVM-rescue and AAM. Compared to AAM, BVM-only patients had similar ROSC (odds ratio [OR] = 1.29, 95% confidence interval [CI] = 0.96 to 1.73), but higher 72-hour survival (OR = 1.96, 95% CI = 1.42 to 2.69), survival to discharge (OR = 4.47, 95% CI = 3.03 to 6.59), and neurologically intact survival (OR = 7.05, 95% CI = 4.40 to 11.3). Compared to AAM, BVM-rescue patients had similar ROSC (OR = 0.73, 95% CI = 0.47 to 1.12) and 72-hour survival (OR = 1.08, 95% CI = 0.66 to 1.77) but higher survival to discharge (OR = 2.15, 95% CI = 1.17 to 3.95) and neurologically intact survival (OR = 2.64, 95% CI = 1.20 to 5.81). Aspiration incidence was similar. CONCLUSIONS Bag-valve-mask-only ventilation is associated with improved OHCA outcomes. Despite similar rates of ROSC and 72-hour survival, BVM-rescue ventilation was associated with improved survival to discharge and neurologically intact survival compared to successful AAM.
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Affiliation(s)
| | | | | | | | | | | | | | - George Sopko
- National Heart, Lung, and Blood Institute Bethesda MD
| | | | | | - Henry Wang
- University of Texas Health Science Center at Houston Houston TX
| | - Matt Hansen
- Oregon Health and Science University Portland OR
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26
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Jaureguibeitia X, Irusta U, Aramendi E, Owens PC, Wang HE, Idris AH. Automatic Detection of Ventilations During Mechanical Cardiopulmonary Resuscitation. IEEE J Biomed Health Inform 2020; 24:2580-2588. [PMID: 31976918 DOI: 10.1109/jbhi.2020.2967643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Feedback on chest compressions and ventilations during cardiopulmonary resuscitation (CPR) is important to improve survival from out-of-hospital cardiac arrest (OHCA). The thoracic impedance signal acquired by monitor-defibrillators during treatment can be used to provide feedback on ventilations, but chest compression components prevent accurate detection of ventilations. This study introduces the first method for accurate ventilation detection using the impedance while chest compressions are concurrently delivered by a mechanical CPR device. A total of 423 OHCA patients treated with mechanical CPR were included, 761 analysis intervals were selected which in total comprised 5 884 minutes and contained 34 864 ventilations. Ground truth ventilations were determined using the expired CO 2 channel. The method uses adaptive signal processing to obtain the impedance ventilation waveform. Then, 14 features were calculated from the ventilation waveform and fed to a random forest (RF) classifier to discriminate false positive detections from actual ventilations. The RF feature importance was used to determine the best feature subset for the classifier. The method was trained and tested using stratified 10-fold cross validation (CV) partitions. The training/test process was repeated 20 times to statistically characterize the results. The best ventilation detector had a median (interdecile range, IDR) F 1-score of 96.32 (96.26-96.37). When used to provide feedback in 1-min intervals, the median (IDR) error and relative error in ventilation rate were 0.002 (-0.334-0.572) min-1 and 0.05 (-3.71-9.08)%, respectively. An accurate ventilation detector during mechanical CPR was demonstrated. The algorithm could be introduced in current equipment for feedback on ventilation rate and quality, and it could contribute to improve OHCA survival rates.
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27
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Zhang Y, Zhu J, Liu Z, Gu L, Zhang W, Zhan H, Hu C, Liao J, Xiong Y, Idris AH. Intravenous versus intraosseous adrenaline administration in out-of-hospital cardiac arrest: A retrospective cohort study. Resuscitation 2020; 149:209-216. [PMID: 31982506 DOI: 10.1016/j.resuscitation.2020.01.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 12/22/2019] [Accepted: 01/06/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Adrenaline is an important component in the resuscitation of individuals experiencing out-of-hospital cardiac arrest (OHCA). The 2018 Advanced Cardiac Life Support (ACLS) algorithm gives the option of either intravenous (IV) or intraosseous (IO) routes for adrenaline administration during cardiac arrest. However, the optimal route during prehospital resuscitation remains controversial. This study aims to investigate whether IV and IO routes lead to different outcomes in OHCA patients who received prehospital adrenaline. METHODS This retrospective analysis included adult patients with OHCA of presumed cardiac origin who had Emergency Medical Services (EMS) CPR, received adrenaline, and were enrolled in the Resuscitation Outcomes Consortium (ROC) Cardiac Epistry version 3 database between 2011 and 2015. We divided the study population into IV and IO groups based on the administration route. Logistic regression analysis was performed to evaluate the association between adrenaline delivery routes and prehospital return of spontaneous circulation (ROSC), survival to hospital discharge, and favorable neurological outcome. RESULTS Of the 35,733 patients included, 27,758 (77.7%) had adrenaline administered via IV access and 7975 (22.3%) via IO access. With the IO group as a reference in the logistic regression model, the adjusted odds ratios of the IV group for prehospital ROSC, survival and favorable neurological outcome were 1.367 (95%CI, 1.276-1.464), 1.468 (95%CI, 1.264-1.705) and 1.849 (95%CI, 1.526-2.240), respectively. Similar results were found in the propensity score matched population and subgroup analysis. CONCLUSION Compared with the IO approach, the IV approach appears to be the optimal route for adrenaline administration in advanced life support for OHCA during prehospital resuscitation.
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Affiliation(s)
- Yongshu Zhang
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Jieming Zhu
- Department of Cardiology, The Third Affiliated Hospital of Sun Yat-sen University, 600 Tianhe Road, Guangzhou 510630, China
| | - Zhihao Liu
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Liwen Gu
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Wanwan Zhang
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Hong Zhan
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Chunlin Hu
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China
| | - Jinli Liao
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China.
| | - Yan Xiong
- Department of Emergency Medicine, The First Affiliated Hospital of Sun Yat-sen University, 58 Zhongshan 2nd Road, Guangzhou 510080, China; University of Texas, Southwestern Medical Center, 5323 Harry Hines BLVD, Dallas, Texas 75390-8579, USA.
| | - Ahamed H Idris
- University of Texas, Southwestern Medical Center, 5323 Harry Hines BLVD, Dallas, Texas 75390-8579, USA
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Blewer AL, Schmicker RH, Morrison LJ, Aufderheide TP, Daya M, Starks MA, May S, Idris AH, Callaway CW, Kudenchuk PJ, Vilke GM, Abella BS. Variation in Bystander Cardiopulmonary Resuscitation Delivery and Subsequent Survival From Out-of-Hospital Cardiac Arrest Based on Neighborhood-Level Ethnic Characteristics. Circulation 2019; 141:34-41. [PMID: 31887076 PMCID: PMC6993941 DOI: 10.1161/circulationaha.119.041541] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Bystander cardiopulmonary resuscitation (B-CPR) delivery and survival after out-of-hospital cardiac arrest vary at the neighborhood level, with lower survival seen in predominantly black neighborhoods. Although the Hispanic population is the fastest-growing minority population in the United States, few studies have assessed whether the proportion of Hispanic residents in a neighborhood is associated with B-CPR delivery and survival from out-of-hospital cardiac arrest. We assessed whether B-CPR rates and survival vary by neighborhood-level ethnicity. We hypothesized that neighborhoods with a higher proportion of Hispanic residents have lower B-CPR rates and lower survival. METHODS We conducted a retrospective cohort study using data from the Resuscitation Outcomes Consortium Epistry at US sites. Neighborhoods were classified by census tract based on percentage of Hispanic residents: <25%, 25% to 50%, 51% to 75%, or >75%. We independently modeled the likelihood of receipt of B-CPR and survival by neighborhood-level ethnicity controlling for site and patient-level confounding characteristics. RESULTS From 2011 to 2015, the Resuscitation Outcomes Consortium collected 27 481 US arrest events; after excluding pediatric arrests, emergency medical services-witnessed arrests, or arrests occurring in a healthcare or institutional facility, 18 927 were included. B-CPR was administered in 37% of events. In neighborhoods with <25% Hispanic residents, B-CPR was administered in 39% of events, whereas it was administered in 27% of events in neighborhoods with >75% Hispanic residents. Compared with <25% Hispanic neighborhoods in a multivariable analysis, out-of-hospital cardiac arrest in predominantly Hispanic neighborhoods had lower B-CPR rates (51% to 75% Hispanic: odds ratio, 0.79 [CI, 0.65-0.95], P=0.014; >75% Hispanic: odds ratio, 0.72 [CI, 0.55-0.96], P=0.025) and lower survival rates (global P value 0.029; >75% Hispanic: odds ratio, 0.56 [CI, 0.34-0.93], P=0.023). CONCLUSIONS Individuals with out-of-hospital cardiac arrest in predominantly Hispanic neighborhoods were less likely to receive B-CPR and had lower likelihood of survival. These findings suggest a need to understand the underlying disparities in cardiopulmonary resuscitationdelivery and an unmet cardiopulmonary resuscitationtraining need in Hispanic communities.
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Affiliation(s)
- Audrey L Blewer
- Department of Family Medicine and Community Health (A.L.B.), Duke University, Durham, NC
| | - Robert H Schmicker
- The Clinical Trial Center (R.H.S., S.M.), University of Washington, Seattle
| | - Laurie J Morrison
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Emergency Medicine, Department of Medicine, University of Toronto, Canada (L.J.M.)
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee (T.P.A.)
| | - Mohamud Daya
- Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.)
| | - Monique A Starks
- Duke Clinical Research Institute (M.A.S.), Duke University, Durham, NC
| | - Susanne May
- The Clinical Trial Center (R.H.S., S.M.), University of Washington, Seattle
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I.)
| | | | | | - Gary M Vilke
- Department of Emergency Medicine, University of California San Diego, La Jolla (G.M.V.)
| | - Benjamin S Abella
- Department of Emergency Medicine and Center for Resuscitation Science, University of Pennsylvania, Philadelphia (B.S.A.)
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29
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Okubo M, Schmicker RH, Wallace DJ, Idris AH, Nichol G, Austin MA, Grunau B, Wittwer LK, Richmond N, Morrison LJ, Kurz MC, Cheskes S, Kudenchuk PJ, Zive DM, Aufderheide TP, Wang HE, Herren H, Vaillancourt C, Davis DP, Vilke GM, Scheuermeyer FX, Weisfeldt ML, Elmer J, Colella R, Callaway CW. Variation in Survival After Out-of-Hospital Cardiac Arrest Between Emergency Medical Services Agencies. JAMA Cardiol 2019; 3:989-999. [PMID: 30267053 DOI: 10.1001/jamacardio.2018.3037] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Importance Emergency medical services (EMS) deliver essential initial care for patients with out-of-hospital cardiac arrest (OHCA), but the extent to which patient outcomes vary between different EMS agencies is not fully understood. Objective To quantify variation in patient outcomes after OHCA across EMS agencies. Design, Setting, and Participants This observational cohort study was conducted in the Resuscitation Outcomes Consortium (ROC) Epistry, a prospective multicenter OHCA registry at 10 sites in North America. Any adult with OHCA treated by an EMS from April 2011 through June 2015 was included. Data analysis occurred from May 2017 to March 2018. Exposure Treating EMS agency. Main Outcomes and Measures The primary outcome was survival to hospital discharge. Secondary outcomes were return of spontaneous circulation at emergency department arrival and favorable functional outcome at hospital discharge (defined as a modified Rankin scale score ≤3). Multivariable hierarchical logistic regression models were used to adjust confounders and clustering of patients within EMS agencies, and calculated median odds ratios (MORs) were used to quantify the extent of residual variation in outcomes between EMS agencies. Results We identified 43 656 patients with OHCA treated by 112 EMS agencies. At EMS agency level, we observed large variations in survival to hospital discharge (range, 0%-28.9%; unadjusted MOR, 1.43 [95% CI, 1.34-1.54]), return of spontaneous circulation on emergency department arrival (range, 9.0%-57.1%; unadjusted MOR, 1.53 [95% CI, 1.43-1.65]), and favorable functional outcome (range, 0%-20.4%; unadjusted MOR, 1.54 [95% CI, 1.40-1.73]). This variation persisted despite adjustment for patient-level and EMS agency-level factors known to be associated with outcomes (adjusted MOR for survival 1.56 [95% CI 1.44-1.73]; adjusted MOR for return of spontaneous circulation at emergency department arrival, 1.50 [95% CI, 1.41-1.62]; adjusted MOR for functionally favorable survival, 1.53 [95% CI, 1.37-1.78]). After restricting analysis to those who survived more than 60 minutes after hospital arrival and including hospital treatment characteristics, the variation persisted (adjusted MOR for survival, 1.49 [95% CI, 1.36-1.69]; adjusted MOR for functionally favorable survival, 1.34 [95% CI, 1.20-1.59]). Conclusions and Relevance We found substantial variations in patient outcomes after OHCA between a large group of EMS agencies in North America that were not explained by documented patient-level and EMS agency-level variables.
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Affiliation(s)
- Masashi Okubo
- Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Robert H Schmicker
- Clinical Trial Center, Department of Biostatistics, University of Washington, Seattle
| | - David J Wallace
- Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas.,Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Graham Nichol
- University of Washington-Harborview Center for Prehospital Emergency Care, Seattle
| | - Michael A Austin
- Department of Emergency Medicine, The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Brian Grunau
- Department of Emergency Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Lynn K Wittwer
- Clark County Emergency Medical Services, Vancouver, Washington
| | | | - Laurie J Morrison
- Rescu, Li Ka Shing Knowledge Institute, St Michael's Hospital, Division of Emergency Medicine, Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Michael C Kurz
- Department of Emergency Medicine, University of Alabama at Birmingham
| | - Sheldon Cheskes
- Rescu, Li Ka Shing Knowledge Institute, St Michael's Hospital, Division of Emergency Medicine, Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Peter J Kudenchuk
- Division of Cardiology, Department of Medicine, University of Washington, Seattle
| | - Dana M Zive
- Department of Emergency Medicine, Oregon Health and Science University, Portland
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee
| | - Henry E Wang
- Department of Emergency Medicine, University of Texas Health Science Center at Houston, Houston
| | - Heather Herren
- Clinical Trial Center, Department of Biostatistics, University of Washington, Seattle
| | - Christian Vaillancourt
- Department of Emergency Medicine, The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, Ontario, Canada
| | - Daniel P Davis
- Department of Emergency Medicine, University of California, San Diego
| | - Gary M Vilke
- Department of Emergency Medicine, University of California, San Diego
| | - Frank X Scheuermeyer
- Department of Emergency Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Myron L Weisfeldt
- Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Jonathan Elmer
- Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania.,Department of Critical Care Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
| | - Riccardo Colella
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee
| | - Clifton W Callaway
- Department of Emergency Medicine, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania
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30
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Blewer AL, McGovern SK, Schmicker RH, May S, Morrison LJ, Aufderheide TP, Daya M, Idris AH, Callaway CW, Kudenchuk PJ, Vilke GM, Abella BS. Gender Disparities Among Adult Recipients of Bystander Cardiopulmonary Resuscitation in the Public. Circ Cardiovasc Qual Outcomes 2019; 11:e004710. [PMID: 30354377 PMCID: PMC6209113 DOI: 10.1161/circoutcomes.118.004710] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Bystander cardiopulmonary resuscitation (BCPR) improves survival from out-of-hospital cardiac arrest (OHCA), yet BCPR rates remain low. It is unknown whether BCPR delivery disparities exist based on victim gender. We measured BCPR rates by gender in private and public environments, hypothesizing that females would be less likely than males to receive BCPR in public settings, with an associated difference in survival to hospital discharge. METHODS AND RESULTS We analyzed data from adult, nontraumatic OHCA events within the Resuscitation Outcomes Consortium registry (2011-2015). Using logistic regression, we modeled the likelihood of receiving BCPR by gender, including patient-level variables, stratified by location. A cohort of 19 331 OHCAs was assessed. Mean age was 64±17 years, and 63% (12 225/19 331) were male. Overall, 37% of OHCA victims received bystander CPR. In public locations, 39% (272/694) of females and 45% (1170/2600) of males received BCPR ( P<0.01), whereas in private settings, 35% (2198/6328) of females and 36% (3364/9449) of males received BCPR ( P=NS). Among public OHCAs, males had significantly increased odds of receiving BCPR compared with females (odds ratio, 1.27; 95% CI, 1.05-1.53; P=0.01); this was not the case in the private setting (odds ratio, 0.93; 95% CI, 0.87-1.01; P=NS). Controlling for site, age, and race, BCPR was significantly associated with survival to hospital discharge (odds ratio, 1.69; 95% CI, 1.54-1.85; P<0.01); in this model, males had 29% increased odds of survival compared with females (odds ratio, 1.29; 95% CI, 1.17-1.42; P<0.01). CONCLUSIONS Males had an increased likelihood of receiving BCPR compared with females in public. BCPR improved survival to discharge, with greater survival among males compared with females.
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Affiliation(s)
- Audrey L Blewer
- Department of Emergency Medicine and Center for Resuscitation Science (A.L.B., S.K.M., B.S.A.).,Department of Biostatistics and Epidemiology (A.L.B.), University of Pennsylvania, Philadelphia
| | - Shaun K McGovern
- Department of Emergency Medicine and Center for Resuscitation Science (A.L.B., S.K.M., B.S.A.)
| | | | | | - Laurie J Morrison
- Rescu, Li Ka Shing Knowledge Institute, St Michael's Hospital and Department of Medicine, University of Toronto (L.J.M.)
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee (T.P.A.)
| | - Mohamud Daya
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee (T.P.A.)
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I.)
| | | | | | - Gary M Vilke
- Department of Emergency Medicine, University of California San Diego, La Jolla (G.M.V.)
| | - Benjamin S Abella
- Department of Emergency Medicine and Center for Resuscitation Science (A.L.B., S.K.M., B.S.A.)
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Chang MP, Lu Y, Leroux B, Aramendi Ecenarro E, Owens P, Wang HE, Idris AH. Association of ventilation with outcomes from out-of-hospital cardiac arrest. Resuscitation 2019; 141:174-181. [PMID: 31112744 DOI: 10.1016/j.resuscitation.2019.05.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 05/04/2019] [Accepted: 05/08/2019] [Indexed: 12/29/2022]
Abstract
AIM OF STUDY To determine the association between bioimpedence-detected ventilation and out-of-hospital cardiac arrest (OHCA) outcomes. METHODS This is a retrospective, observational study of 560 OHCA patients from the Dallas-Fort Worth site enrolled in the Resuscitation Outcomes Consortium Trial of Continuous or Interrupted Chest Compressions During CPR from 4/2012 to 7/2015. We measured bioimpedance ventilation (lung inflation) waveforms in the pause between chest compression segments (Physio-Control LIFEPAK 12 and 15, Redmond, WA) recorded through defibrillation pads. We included cases ≥18 years with presumed cardiac cause of arrest assigned to interrupted 30:2 chest compressions with bag-valve-mask ventilation and ≥2 min of recorded cardiopulmonary resuscitation. We compared outcomes in two a priori pre-specified groups: patients with ventilation waveforms in <50% of pauses (Group 1) versus those with waveforms in ≥50% of pauses (Group 2). RESULTS Mean duration of 30:2 CPR was 13 ± 7 min with a total of 7762 pauses in chest compressions. Group 1 (N = 424) had a median 11 pauses and 3 ventilations per patient vs. Group 2 (N = 136) with a median 12 pauses and 8 ventilations per patient, which was associated with improved return of spontaneous circulation (ROSC) at any time (35% vs. 23%, p < 0.005), prehospital ROSC (19.8% vs. 8.7%, p < 0.0009), emergency department ROSC (33% vs. 21%, p < 0.005), and survival to hospital discharge (10.3% vs. 4.0%, p = 0.008). CONCLUSIONS This novel study shows that ventilation with lung inflation occurs infrequently during 30:2 CPR. Ventilation in ≥50% of pauses was associated with significantly improved rates of ROSC and survival.
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Affiliation(s)
- Mary P Chang
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8579, United States
| | - Yuanzheng Lu
- Emergency and Disaster Medicine Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, 518107, China
| | - Brian Leroux
- Department of Biostatistics and Oral Health Sciences, University of Washington, Seattle, WA, United States
| | | | - Pamela Owens
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8579, United States
| | - Henry E Wang
- University of Texas Health Science Center at Houston, Department of Emergency Medicine, Houston, TX, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8579, United States.
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32
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Elola A, Aramendi E, Irusta U, Alonso E, Lu Y, Chang MP, Owens P, Idris AH. Capnography: A support tool for the detection of return of spontaneous circulation in out-of-hospital cardiac arrest. Resuscitation 2019; 142:153-161. [PMID: 31005583 DOI: 10.1016/j.resuscitation.2019.03.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 02/27/2019] [Accepted: 03/18/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Automated detection of return of spontaneous circulation (ROSC) is still an unsolved problem during cardiac arrest. Current guidelines recommend the use of capnography, but most automatic methods are based on the analysis of the ECG and thoracic impedance (TI) signals. This study analysed the added value of EtCO2 for discriminating pulsed (PR) and pulseless (PEA) rhythms and its potential to detect ROSC. MATERIALS AND METHODS A total of 426 out-of-hospital cardiac arrest cases, 117 with ROSC and 309 without ROSC, were analysed. First, EtCO2 values were compared for ROSC and no ROSC cases. Second, 5098 artefact free 3-s long segments were automatically extracted and labelled as PR (3639) or PEA (1459) using the instant of ROSC annotated by the clinician on scene as gold standard. Machine learning classifiers were designed using features obtained from the ECG, TI and the EtCO2 value. Third, the cases were retrospectively analysed using the classifier to discriminate cases with and without ROSC. RESULTS EtCO2 values increased significantly from 41 mmHg 3-min before ROSC to 57 mmHg 1-min after ROSC, and EtCO2 was significantly larger for PR than for PEA, 46 mmHg/20 mmHg (p < 0.05). Adding EtCO2 to the machine learning models increased their area under the curve (AUC) by over 2 percentage points. The combination of ECG, TI and EtCO2 had an AUC for the detection of pulse of 0.92. Finally, the retrospective analysis showed a sensitivity and specificity of 96.6% and 94.5% for the detection of ROSC and no-ROSC cases, respectively. CONCLUSION Adding EtCO2 improves the performance of automatic algorithms for pulse detection based on ECG and TI. These algorithms can be used to identify pulse on site, and to retrospectively identify cases with ROSC.
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Affiliation(s)
- Andoni Elola
- Communications Engineering Department, University of the Basque Country UPV/EHU, 48013 Bilbao, Spain.
| | - Elisabete Aramendi
- Communications Engineering Department, University of the Basque Country UPV/EHU, 48013 Bilbao, Spain
| | - Unai Irusta
- Communications Engineering Department, University of the Basque Country UPV/EHU, 48013 Bilbao, Spain
| | - Erik Alonso
- Communications Engineering Department, University of the Basque Country UPV/EHU, 48013 Bilbao, Spain
| | - Yuanzheng Lu
- Emergency and Disaster Medicine Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Mary P Chang
- Department of Emergency Medicine, University of Texas SouthWestern Medical Center (UTSW), Dallas, United States
| | - Pamela Owens
- Department of Emergency Medicine, University of Texas SouthWestern Medical Center (UTSW), Dallas, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas SouthWestern Medical Center (UTSW), Dallas, United States
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33
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Aramendi E, Lu Y, Chang MP, Elola A, Irusta U, Owens P, Idris AH. A novel technique to assess the quality of ventilation during pre-hospital cardiopulmonary resuscitation. Resuscitation 2018; 132:41-46. [DOI: 10.1016/j.resuscitation.2018.08.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 07/19/2018] [Accepted: 08/13/2018] [Indexed: 10/28/2022]
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Khera R, Humbert A, Leroux B, Nichol G, Kudenchuk P, Scales D, Baker A, Austin M, Newgard CD, Radecki R, Vilke GM, Sawyer KN, Sopko G, Idris AH, Wang H, Chan PS, Kurz MC. Hospital Variation in the Utilization and Implementation of Targeted Temperature Management in Out-of-Hospital Cardiac Arrest. Circ Cardiovasc Qual Outcomes 2018; 11:e004829. [DOI: 10.1161/circoutcomes.118.004829] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Rohan Khera
- Division of Cardiology, UT Southwestern Medical Center, Dallas, TX (R.K.)
| | - Andrew Humbert
- Clinical Trial Center, Department of Biostatistics (A.H., B.L.), University of Washington, Seattle
| | - Brian Leroux
- Clinical Trial Center, Department of Biostatistics (A.H., B.L.), University of Washington, Seattle
| | - Graham Nichol
- Department of Medicine (G.N., P.K.), University of Washington, Seattle
| | - Peter Kudenchuk
- Department of Medicine (G.N., P.K.), University of Washington, Seattle
| | - Damon Scales
- Department of Medicine, University of Toronto, Ontario, Canada (D.S., A.B.)
| | - Andrew Baker
- Department of Medicine, University of Toronto, Ontario, Canada (D.S., A.B.)
| | - Mike Austin
- Department of Emergency Medicine, University of Ottawa, Ontario, Canada (M.A.)
| | - Craig D. Newgard
- Department of Emergency Medicine, Oregon Health & Science University, Portland (C.D.N.)
| | - Ryan Radecki
- Department of Emergency Medicine, Kaiser Permanente Northwest, Portland, OR (R.R.)
| | - Gary M. Vilke
- Department of Emergency Medicine, University of California San Diego, CA (G.M.V.)
| | - Kelly N. Sawyer
- Department of Emergency Medicine, University of Pittsburgh, PA (K.N.S.)
| | - George Sopko
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MA (G.S.)
| | - Ahamed H. Idris
- Departments of Emergency Medicine and Internal Medicine, UT Southwestern Medical Center, Dallas, TX (A.H.I.)
| | - Henry Wang
- Department of Emergency Medicine, University of Texas Health Sciences Center at Houston (H.W.)
| | - Paul S. Chan
- Mid America Heart Institute, Kansas City and the University of Missouri-Kansas City, MO (P.S.C.)
| | - Michael C. Kurz
- Department of Emergency Medicine, University of Alabama School of Medicine, Birmingham (M.C.K.)
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35
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Wang HE, Schmicker RH, Daya MR, Stephens SW, Idris AH, Carlson JN, Colella MR, Herren H, Hansen M, Richmond NJ, Puyana JCJ, Aufderheide TP, Gray RE, Gray PC, Verkest M, Owens PC, Brienza AM, Sternig KJ, May SJ, Sopko GR, Weisfeldt ML, Nichol G. Effect of a Strategy of Initial Laryngeal Tube Insertion vs Endotracheal Intubation on 72-Hour Survival in Adults With Out-of-Hospital Cardiac Arrest: A Randomized Clinical Trial. JAMA 2018; 320:769-778. [PMID: 30167699 PMCID: PMC6583103 DOI: 10.1001/jama.2018.7044] [Citation(s) in RCA: 223] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
IMPORTANCE Emergency medical services (EMS) commonly perform endotracheal intubation (ETI) or insertion of supraglottic airways, such as the laryngeal tube (LT), on patients with out-of-hospital cardiac arrest (OHCA). The optimal method for OHCA advanced airway management is unknown. OBJECTIVE To compare the effectiveness of a strategy of initial LT insertion vs initial ETI in adults with OHCA. DESIGN, SETTING, AND PARTICIPANTS Multicenter pragmatic cluster-crossover clinical trial involving EMS agencies from the Resuscitation Outcomes Consortium. The trial included 3004 adults with OHCA and anticipated need for advanced airway management who were enrolled from December 1, 2015, to November 4, 2017. The final date of follow-up was November 10, 2017. INTERVENTIONS Twenty-seven EMS agencies were randomized in 13 clusters to initial airway management strategy with LT (n = 1505 patients) or ETI (n = 1499 patients), with crossover to the alternate strategy at 3- to 5-month intervals. MAIN OUTCOMES AND MEASURES The primary outcome was 72-hour survival. Secondary outcomes included return of spontaneous circulation, survival to hospital discharge, favorable neurological status at hospital discharge (Modified Rankin Scale score ≤3), and key adverse events. RESULTS Among 3004 enrolled patients (median [interquartile range] age, 64 [53-76] years, 1829 [60.9%] men), 3000 were included in the primary analysis. Rates of initial airway success were 90.3% with LT and 51.6% with ETI. Seventy-two hour survival was 18.3% in the LT group vs 15.4% in the ETI group (adjusted difference, 2.9% [95% CI, 0.2%-5.6%]; P = .04). Secondary outcomes in the LT group vs ETI group were return of spontaneous circulation (27.9% vs 24.3%; adjusted difference, 3.6% [95% CI, 0.3%-6.8%]; P = .03); hospital survival (10.8% vs 8.1%; adjusted difference, 2.7% [95% CI, 0.6%-4.8%]; P = .01); and favorable neurological status at discharge (7.1% vs 5.0%; adjusted difference, 2.1% [95% CI, 0.3%-3.8%]; P = .02). There were no significant differences in oropharyngeal or hypopharyngeal injury (0.2% vs 0.3%), airway swelling (1.1% vs 1.0%), or pneumonia or pneumonitis (26.1% vs 22.3%). CONCLUSIONS AND RELEVANCE Among adults with OHCA, a strategy of initial LT insertion was associated with significantly greater 72-hour survival compared with a strategy of initial ETI. These findings suggest that LT insertion may be considered as an initial airway management strategy in patients with OHCA, but limitations of the pragmatic design, practice setting, and ETI performance characteristics suggest that further research is warranted. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT02419573.
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Affiliation(s)
- Henry E. Wang
- Department of Emergency Medicine, University of Texas Health Science Center at Houston
- Department of Emergency Medicine, University of Alabama at Birmingham
| | - Robert H. Schmicker
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle
| | - Mohamud R. Daya
- Department of Emergency Medicine, Oregon Health and Science University, Portland
| | | | - Ahamed H. Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
| | - Jestin N. Carlson
- Department of Emergency Medicine, Saint Vincent Hospital, Allegheny Health Network, Erie, Pennsylvania
- University of Pittsburgh, Pittsburgh, Pennsylvania
| | | | - Heather Herren
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle
| | - Matthew Hansen
- Department of Emergency Medicine, Oregon Health and Science University, Portland
| | - Neal J. Richmond
- MedStar Mobile Healthcare, Fort Worth, Texas
- currently with Department of Emergency Medicine, John Peter Smith Health Network, Fort Worth, Texas
| | | | - Tom P. Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee
| | - Randal E. Gray
- Department of Emergency Medicine, University of Alabama at Birmingham
| | - Pamela C. Gray
- Department of Emergency Medicine, University of Alabama at Birmingham
| | | | - Pamela C. Owens
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas
| | | | | | - Susanne J. May
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle
| | - George R. Sopko
- National Heart, Lung, and Blood Institute, Bethesda, Maryland
| | - Myron L. Weisfeldt
- Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Graham Nichol
- Departments of Emergency Medicine and Medicine, Harborview Center for Prehospital Emergency Care, University of Washington, Seattle
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Idris AH, Bierens JJLM, Perkins GD, Wenzel V, Nadkarni V, Morley P, Warner DS, Topjian A, Venema AM, Branche CM, Szpilman D, Morizot-Leite L, Nitta M, Løfgren B, Webber J, Gräsner JT, Beerman SB, Youn CS, Jost U, Quan L, Dezfulian C, Handley AJ, Hazinski MF. 2015 Revised Utstein-Style Recommended Guidelines for Uniform Reporting of Data From Drowning-Related Resuscitation: An ILCOR Advisory Statement. Circ Cardiovasc Qual Outcomes 2018; 10:HCQ.0000000000000024. [PMID: 28716971 DOI: 10.1161/hcq.0000000000000024] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Utstein-style guidelines use an established consensus process, endorsed by the international resuscitation community, to facilitate and structure resuscitation research and publication. The first "Guidelines for Uniform Reporting of Data From Drowning" were published over a decade ago. During the intervening years, resuscitation science has advanced considerably, thus making revision of the guidelines timely. In particular, measurement of cardiopulmonary resuscitation elements and neurological outcomes reporting have advanced substantially. The purpose of this report is to provide updated guidelines for reporting data from studies of resuscitation from drowning. METHODS An international group with scientific expertise in the fields of drowning research, resuscitation research, emergency medical services, public health, and development of guidelines met in Potsdam, Germany, to determine the data that should be reported in scientific articles on the subject of resuscitation from drowning. At the Utstein-style meeting, participants discussed data elements in detail, defined the data, determined data priority, and decided how data should be reported, including scoring methods and category details. RESULTS The template for reporting data from drowning research was revised extensively, with new emphasis on measurement of quality of resuscitation, neurological outcomes, and deletion of data that have proved to be less relevant or difficult to capture. CONCLUSIONS The report describes the consensus process, rationale for selecting data elements to be reported, definitions and priority of data, and scoring methods. These guidelines are intended to improve the clarity of scientific communication and the comparability of scientific investigations.
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Affiliation(s)
- Ahamed H Idris
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - Joost J L M Bierens
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - Gavin D Perkins
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - Volker Wenzel
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - Vinay Nadkarni
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - Peter Morley
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - David S Warner
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
| | - Alexis Topjian
- Conference and Writing Group Chair. Conference and Writing Group Co-Chair. Prehospital Data Section Chair. Prehospital Data Section Co-Chair. Quality of Resuscitation Section Chair. Quality of Resuscitation Section Co-Chair. Hospital and Outcome Data Section Chair. Hospital and Outcome Data Section Co-Chair
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Alonso E, Aramendi E, Irusta U, Daya M, Corcuera C, Lu Y, Idris AH. Evaluation of chest compression artefact removal based on rhythm assessments made by clinicians. Resuscitation 2018; 125:104-110. [DOI: 10.1016/j.resuscitation.2018.01.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 01/11/2018] [Accepted: 01/31/2018] [Indexed: 10/18/2022]
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Venema AM, Absalom AR, Idris AH, Bierens JJLM. Review of 14 drowning publications based on the Utstein style for drowning. Scand J Trauma Resusc Emerg Med 2018; 26:19. [PMID: 29566700 PMCID: PMC5863818 DOI: 10.1186/s13049-018-0488-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 03/14/2018] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The Utstein style for drowning (USFD) was published in 2003 with the aim of improving drowning research. To support a revision of the USFD, the current study aimed to generate an inventory of the use of the USFD parameters and compare the findings of the publications that have used the USFD. METHODS A search in Pubmed, Embase, the Cochrane Library, Web of Science and Scopus was performed to identify studies that used the USFD and were published between 01-10-2003 and 22-03-2015. We also searched in Pubmed, Embase, the Cochrane Library, Web of Science, and Scopus for all publications that cited the two publications containing the original ILCOR advisory statement introducing and recommending the USFD. In total we identified 14 publications by groups that explicitly used elements of the USFD for collecting and reporting their data. RESULTS Of the 22 core and 19 supplemental USFD parameters, 6-19 core (27-86%) and 1-12 (5-63%) supplemental parameters were used; two parameters (5%) have not been used in any publication. Associations with outcome were reported for nine core (41%) and five supplemental (26%) USFD parameters. The USFD publications also identified non-USFD parameters related to outcome: initial cardiac rhythm, time points and intervals during resuscitation, intubation at the drowning scene, first hospital core temperature, serum glucose and potassium, the use of inotropic/vasoactive agents and the Paediatric Index of Mortality 2-score. CONCLUSIONS Fourteen USFD based drowning publications have been identified. These publications provide valuable information about the process and quality of drowning resuscitation and confirm that the USFD is helpful for a structured comparison of the outcome of drowning resuscitation.
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Affiliation(s)
- Allart M Venema
- Department of Anaesthesiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Huispostcode EB 32, Postbus 30001, 9700 RB, Groningen, The Netherlands.
| | - Anthony R Absalom
- Department of Anaesthesiology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, Huispostcode EB 32, Postbus 30001, 9700 RB, Groningen, The Netherlands
| | - Ahamed H Idris
- University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX, 75390-8579, USA
| | - Joost J L M Bierens
- Research Group Emergency and Disaster Medicine, Vrije Universiteit Brussels, Faculty of Medicine & Pharmacy, Laarbeeklaan 103, 1090, Brussels, Belgium.,Koninklijke Maatschappij tot Redding van Drenkelingen, Rokin 114, 1012 LB, Amsterdam, The Netherlands
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39
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Hansen M, Schmicker RH, Newgard CD, Grunau B, Scheuermeyer F, Cheskes S, Vithalani V, Alnaji F, Rea T, Idris AH, Herren H, Hutchison J, Austin M, Egan D, Daya M. Time to Epinephrine Administration and Survival From Nonshockable Out-of-Hospital Cardiac Arrest Among Children and Adults. Circulation 2018; 137:2032-2040. [PMID: 29511001 DOI: 10.1161/circulationaha.117.033067] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/21/2018] [Indexed: 11/16/2022]
Abstract
BACKGROUND Previous studies have demonstrated that earlier epinephrine administration is associated with improved survival from out-of-hospital cardiac arrest (OHCA) with shockable initial rhythms. However, the effect of epinephrine timing on patients with nonshockable initial rhythms is unclear. The objective of this study was to measure the association between time to epinephrine administration and survival in adults and children with emergency medical services (EMS)-treated OHCA with nonshockable initial rhythms. METHODS We performed a secondary analysis of OHCAs prospectively identified by the Resuscitation Outcomes Consortium network from June 4, 2011, to June 30, 2015. We included patients of all ages with an EMS-treated OHCA and an initial nonshockable rhythm. We excluded those with return of spontaneous circulation in <10 minutes. We conducted a subgroup analysis involving patients <18 years of age. The primary exposure was time (minutes) from arrival of the first EMS agency to the first dose of epinephrine. Secondary exposure was time to epinephrine dichotomized as early (<10 minutes) or late (≥10 minutes). The primary outcome was survival to hospital discharge. We adjusted for Utstein covariates and Resuscitation Outcomes Consortium study site. RESULTS From 55 568 EMS-treated OHCAs, 32 101 patients with initial nonshockable rhythms were included. There were 12 238 in the early group, 14 517 in the late group, and 5346 not treated with epinephrine. After adjusting for potential confounders, each minute from EMS arrival to epinephrine administration was associated with a 4% decrease in odds of survival for adults, odds ratio=0.96 (95% confidence interval, 0.95-0.98). A subgroup analysis (n=13 290) examining neurological outcomes showed a similar association (adjusted odds ratio, 0.94 per minute; 95% confidence interval, 0.89-0.98). When epinephrine was given late in comparison with early, odds of survival were 18% lower (odds ratio, 0.82; 95% confidence interval, 0.68-0.98). In a pediatric analysis (n=595), odds of survival were 9% lower (odds ratio, 0.91; 95% confidence interval, 0.81-1.01) for each minute delay in epinephrine. CONCLUSIONS Among OHCAs with nonshockable initial rhythms, the majority of patients were administered epinephrine >10 minutes after EMS arrival. Each minute delay in epinephrine administration was associated with decreased survival and unfavorable neurological outcomes. EMS agencies should consider strategies to reduce epinephrine administration times in patients with initial nonshockable rhythms.
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Affiliation(s)
- Matthew Hansen
- Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland (M.H., M.D.).
| | | | | | | | - Frank Scheuermeyer
- Department of Emergency Medicine, St Paul's Hospital (F.S.), University of British Columbia, Vancouver, Canada
| | - Sheldon Cheskes
- Sunnybrook Center for Prehospital Medicine, Department of Family and Community Medicine, Division of Emergency Medicine, Li Ka Shing Knowledge Institute of St. Michaels Hospital (S.C.)
| | - Veer Vithalani
- Office of the Medical Director, MedStar Mobile Healthcare, Fort Worth, TX (V.V.)
| | - Fuad Alnaji
- Department of Pediatrics, University of Ottawa, Ontario, Canada (F.A.)
| | - Thomas Rea
- Department of Internal Medicine (T.R.), University of Washington, Seattle
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I.)
| | | | - Jamie Hutchison
- Departments of Critical Care and Pediatrics (J.H.), University of Toronto, Ontario, Canada
| | - Mike Austin
- Department of Emergency Medicine, The Ottawa Hospital, Ontario, Canada (M.A.)
| | - Debra Egan
- National Center for Complimentary and Integrative Health, National Institutes of Health, Bethesda, MD (D.E.)
| | - Mohamud Daya
- Center for Policy and Research in Emergency Medicine, Oregon Health and Science University, Portland (M.H., M.D.)
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40
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Pollack RA, Brown SP, Rea T, Aufderheide T, Barbic D, Buick JE, Christenson J, Idris AH, Jasti J, Kampp M, Kudenchuk P, May S, Muhr M, Nichol G, Ornato JP, Sopko G, Vaillancourt C, Morrison L, Weisfeldt M. Impact of Bystander Automated External Defibrillator Use on Survival and Functional Outcomes in Shockable Observed Public Cardiac Arrests. Circulation 2018; 137:2104-2113. [PMID: 29483086 DOI: 10.1161/circulationaha.117.030700] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 01/04/2018] [Indexed: 11/16/2022]
Abstract
BACKGROUND Survival following out-of-hospital cardiac arrest (OHCA) with shockable rhythms can be improved with early defibrillation. Although shockable OHCA accounts for only ≈25% of overall arrests, ≈60% of public OHCAs are shockable, offering the possibility of restoring thousands of individuals to full recovery with early defibrillation by bystanders. We sought to determine the association of bystander automated external defibrillator use with survival and functional outcomes in shockable observed public OHCA. METHODS From 2011 to 2015, the Resuscitation Outcomes Consortium prospectively collected detailed information on all cardiac arrests at 9 regional centers. The exposures were shock administration by a bystander-applied automated external defibrillator in comparison with initial defibrillation by emergency medical services. The primary outcome measure was discharge with normal or near-normal (favorable) functional status defined as a modified Rankin Score ≤2. Survival to hospital discharge was the secondary outcome measure. RESULTS Among 49 555 OHCAs, 4115 (8.3%) observed public OHCAs were analyzed, of which 2500 (60.8%) were shockable. A bystander shock was applied in 18.8% of the shockable arrests. Patients shocked by a bystander were significantly more likely to survive to discharge (66.5% versus 43.0%) and be discharged with favorable functional outcome (57.1% versus 32.7%) than patients initially shocked by emergency medical services. After adjusting for known predictors of outcome, the odds ratio associated with a bystander shock was 2.62 (95% confidence interval, 2.07-3.31) for survival to hospital discharge and 2.73 (95% confidence interval, 2.17-3.44) for discharge with favorable functional outcome. The benefit of bystander shock increased progressively as emergency medical services response time became longer. CONCLUSIONS Bystander automated external defibrillator use before emergency medical services arrival in shockable observed public OHCA was associated with better survival and functional outcomes. Continued emphasis on public automated external defibrillator utilization programs may further improve outcomes of OHCA.
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Affiliation(s)
- Ross A Pollack
- Johns Hopkins University School of Medicine, Baltimore, MD (R.A.P., M.W.)
| | | | - Thomas Rea
- University of Washington, Seattle (T.R., P.K.).,King County Emergency Medical Services, Public Health, Seattle, WA (T.R., P.K.)
| | - Tom Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee (T.A., J.J.)
| | - David Barbic
- Department of Emergency Medicine, University of British Columbia, Vancouver, Canada (D.B., J.C.)
| | - Jason E Buick
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Canada (J.E.B, L.M.)
| | - Jim Christenson
- Department of Emergency Medicine, University of British Columbia, Vancouver, Canada (D.B., J.C.)
| | - Ahamed H Idris
- Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I.)
| | - Jamie Jasti
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee (T.A., J.J.)
| | - Michael Kampp
- Department of Emergency Medicine, Oregon Health and Science University, Portland (M.K.)
| | - Peter Kudenchuk
- University of Washington, Seattle (T.R., P.K.).,King County Emergency Medical Services, Public Health, Seattle, WA (T.R., P.K.)
| | - Susanne May
- Johns Hopkins University School of Medicine, Baltimore, MD (R.A.P., M.W.)
| | - Marc Muhr
- Clark County Emergency Medical Services, Vancouver, WA (M.M.)
| | - Graham Nichol
- University of Washington-Harborview Center for Prehospital Emergency Care, Seattle (G.N.)
| | - Joseph P Ornato
- Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.)
| | - George Sopko
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (G.S.)
| | - Christian Vaillancourt
- Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Canada (C.V.)
| | - Laurie Morrison
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Canada (J.E.B, L.M.).,Division of Emergency Medicine, Department of Medicine, University of Toronto, Ottawa, Canada (L.M.)
| | - Myron Weisfeldt
- Johns Hopkins University School of Medicine, Baltimore, MD (R.A.P., M.W.)
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Kudenchuk PJ, Leroux BG, Daya M, Rea T, Vaillancourt C, Morrison LJ, Callaway CW, Christenson J, Ornato JP, Dunford JV, Wittwer L, Weisfeldt ML, Aufderheide TP, Vilke GM, Idris AH, Stiell IG, Colella MR, Kayea T, Egan D, Desvigne-Nickens P, Gray P, Gray R, Straight R, Dorian P. Antiarrhythmic Drugs for Nonshockable-Turned-Shockable Out-of-Hospital Cardiac Arrest: The ALPS Study (Amiodarone, Lidocaine, or Placebo). Circulation 2017; 136:2119-2131. [PMID: 28904070 DOI: 10.1161/circulationaha.117.028624] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 08/31/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Out-of-hospital cardiac arrest (OHCA) commonly presents with nonshockable rhythms (asystole and pulseless electric activity). It is unknown whether antiarrhythmic drugs are safe and effective when nonshockable rhythms evolve to shockable rhythms (ventricular fibrillation/pulseless ventricular tachycardia [VF/VT]) during resuscitation. METHODS Adults with nontraumatic OHCA, vascular access, and VF/VT anytime after ≥1 shock(s) were prospectively randomized, double-blind, to receive amiodarone, lidocaine, or placebo by paramedics. Patients presenting with initial shock-refractory VF/VT were previously reported. The current study was a prespecified analysis in a separate cohort that initially presented with nonshockable OHCA and was randomized on subsequently developing shock-refractory VF/VT. The primary outcome was survival to hospital discharge. Secondary outcomes included discharge functional status and adverse drug-related effects. RESULTS Of 37 889 patients with OHCA, 3026 with initial VF/VT and 1063 with initial nonshockable-turned-shockable rhythms were treatment-eligible, were randomized, and received their assigned drug. Baseline characteristics among patients with nonshockable-turned-shockable rhythms were balanced across treatment arms, except that recipients of a placebo included fewer men and were less likely to receive bystander cardiopulmonary resuscitation. Active-drug recipients in this cohort required fewer shocks, supplemental doses of their assigned drug, and ancillary antiarrhythmic drugs than recipients of a placebo (P<0.05). In all, 16 (4.1%) amiodarone, 11 (3.1%) lidocaine, and 6 (1.9%) placebo-treated patients survived to hospital discharge (P=0.24). No significant interaction between treatment assignment and discharge survival occurred with the initiating OHCA rhythm (asystole, pulseless electric activity, or VF/VT). Survival in each of these categories was consistently higher with active drugs, although the trends were not statistically significant. Adjusted absolute differences (95% confidence interval) in survival from nonshockable-turned-shockable arrhythmias with amiodarone versus placebo were 2.3% (-0.3, 4.8), P=0.08, and for lidocaine versus placebo 1.2% (-1.1, 3.6), P=0.30. More than 50% of these survivors were functionally independent or required minimal assistance. Drug-related adverse effects were infrequent. CONCLUSIONS Outcome from nonshockable-turned-shockable OHCA is poor but not invariably fatal. Although not statistically significant, point estimates for survival were greater after amiodarone or lidocaine than placebo, without increased risk of adverse effects or disability and consistent with previously observed favorable trends from treatment of initial shock-refractory VF/VT with these drugs. Together the findings may signal a clinical benefit that invites further investigation. CLINICAL TRIAL REGISTRATION URL: https://www.clinicaltrials.gov. Unique identifier: NCT01401647.
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Affiliation(s)
- Peter J Kudenchuk
- Department of Medicine, Division of Cardiology, University of Washington and King County Emergency Medical Services, Public Health-Seattle & King County, WA (P.J.K., T.R.).
| | - Brian G Leroux
- Department of Biostatistics, University of Washington Clinical Trial Center, Seattle, WA (B.G.L.)
| | - Mohamud Daya
- Department of Emergency Medicine, Oregon Health & Science University, Portland (M.D.)
| | - Thomas Rea
- Department of Medicine, Division of Cardiology, University of Washington and King County Emergency Medical Services, Public Health-Seattle & King County, WA (P.J.K., T.R.)
| | - Christian Vaillancourt
- Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Canada (C.V., I.G.S.)
| | - Laurie J Morrison
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Ontario, Canada (L.J.M., P.D.)
| | | | - James Christenson
- Department of Emergency Medicine, University of British Columbia Faculty of Medicine, Vancouver, Canada (J.C.)
| | - Joseph P Ornato
- Department of Emergency Medicine, Virginia Commonwealth University Health System, Richmond, VA (J.P.O.)
| | - James V Dunford
- Department of Emergency Medicine, University of California San Diego, San Diego Fire-Rescue Department (J.V.D., G.M.V.)
| | - Lynn Wittwer
- Clark County Emergency Medical Services, Vancouver, WA (L.W.)
| | | | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee (T.P.A.)
| | - Gary M Vilke
- Department of Emergency Medicine, University of California San Diego, San Diego Fire-Rescue Department (J.V.D., G.M.V.)
| | - Ahamed H Idris
- Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center, Dallas (A.H.I.)
| | - Ian G Stiell
- Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Canada (C.V., I.G.S.)
| | - M Riccardo Colella
- Department of Emergency Medicine and Pediatrics, Medical College of Wisconsin, Milwaukee (M.R.C.)
| | - Tami Kayea
- Dallas Fire-Rescue Department, TX (T.K.)
| | - Debra Egan
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (D.E., P.D.-N.)
| | - Patrice Desvigne-Nickens
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD (D.E., P.D.-N.)
| | - Pamela Gray
- University of Alabama, Birmingham (P.G., R.G.)
| | - Randal Gray
- University of Alabama, Birmingham (P.G., R.G.)
| | - Ron Straight
- Providence Health and British Columbia Emergency Health Services, Vancouver, Canada (R.S.)
| | - Paul Dorian
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Ontario, Canada (L.J.M., P.D.)
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Blewer AL, Ibrahim SA, Leary M, Dutwin D, McNally B, Anderson ML, Morrison LJ, Aufderheide TP, Daya M, Idris AH, Callaway CW, Kudenchuk PJ, Vilke GM, Abella BS. Cardiopulmonary Resuscitation Training Disparities in the United States. J Am Heart Assoc 2017; 6:JAHA.117.006124. [PMID: 28515114 PMCID: PMC5524119 DOI: 10.1161/jaha.117.006124] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Background Bystander cardiopulmonary resuscitation (CPR) is associated with increased survival from cardiac arrest, yet bystander CPR rates are low in many communities. The overall prevalence of CPR training in the United States and associated individual‐level disparities are unknown. We sought to measure the national prevalence of CPR training and hypothesized that older age and lower socioeconomic status would be independently associated with a lower likelihood of CPR training. Methods and Results We administered a cross‐sectional telephone survey to a nationally representative adult sample. We assessed the demographics of individuals trained in CPR within 2 years (currently trained) and those who had been trained in CPR at some point in time (ever trained). The association of CPR training and demographic variables were tested using survey weighted logistic regression. Between September 2015 and November 2015, 9022 individuals completed the survey; 18% reported being currently trained in CPR, and 65% reported training at some point previously. For each year of increased age, the likelihood of being currently CPR trained or ever trained decreased (currently trained: odds ratio, 0.98; 95% CI, 0.97–0.99; P<0.01; ever trained: OR, 0.99; 95% CI, 0.98–0.99; P=0.04). Furthermore, there was a greater then 4‐fold difference in odds of being currently CPR trained from the 30–39 to 70–79 year old age groups (95% CI, 0.10–0.23). Factors associated with a lower likelihood of CPR training were lesser educational attainment and lower household income (P<0.01 for each of these variables). Conclusions A minority of respondents reported current training in CPR. Older age, lesser education, and lower income were associated with reduced likelihood of CPR training. These findings illustrate important gaps in US CPR education and suggest the need to develop tailored CPR training efforts to address this variability.
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Affiliation(s)
- Audrey L Blewer
- Department of Emergency Medicine and Center for Resuscitation Science, University of Pennsylvania, Philadelphia, PA.,Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA
| | - Said A Ibrahim
- Department of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Marion Leary
- Department of Emergency Medicine and Center for Resuscitation Science, University of Pennsylvania, Philadelphia, PA.,School of Nursing, University of Pennsylvania, Philadelphia, PA
| | - David Dutwin
- Annenberg School of Communication, University of Pennsylvania, Philadelphia, PA
| | - Bryan McNally
- Department of Emergency Medicine, Emory University, Atlanta, GA
| | | | | | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI
| | - Mohamud Daya
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX
| | | | | | - Gary M Vilke
- Department of Emergency Medicine, University of California San Diego, La Jolla, CA
| | - Benjamin S Abella
- Department of Emergency Medicine and Center for Resuscitation Science, University of Pennsylvania, Philadelphia, PA
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Chang MP, Gent LM, Sweet M, Potts J, Ahtone J, Idris AH. A novel educational outreach approach to teach Hands-Only Cardiopulmonary Resuscitation to the public. Resuscitation 2017; 116:22-26. [PMID: 28465141 DOI: 10.1016/j.resuscitation.2017.04.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/05/2017] [Accepted: 04/24/2017] [Indexed: 11/28/2022]
Abstract
REVIEW The American Heart Association set goals in 2010 to train 20 million people annually in cardiopulmonary resuscitation and to double bystander response by 2020. These ambitious goals are difficult to achieve without new approaches. METHODS The main objective is to evaluate a new approach to cardiopulmonary resuscitation instruction using a self-instructional kiosk to teach Hands-Only CPR to people at a busy international airport. This is a prospective, observational study evaluating a new approach to teach Hands-Only CPR to the public from July 2013 to February 2016. The American Heart Association developed a Hands-Only CPR Kiosk for this project. We assessed the number of participants who viewed the instructional video and practiced chest compressions as well as the quality metrics of the chest compressions. RESULTS In a 32-month period, there were 23478 visits to the Hands-Only CPR Kiosk and 9006 test sessions; of those practice sessions, 26.2% achieved correct chest compression rate, 60.2% achieved correct chest compression depth, and 63.5% had the correct hand position. CONCLUSIONS There is noticeable public interest in learning Hands-Only CPR by using an airport kiosk and an airport is an opportune place to engage a layperson in learning Hands-Only CPR. The average quality of Hands-Only CPR by the public needs improvement and adding kiosks to other locations in the airport could reach more people and could be replicated in other major airports in the United States.
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Affiliation(s)
- Mary P Chang
- Department of Emergency Medicine, University of Texas at Southwestern, 5323 Harry Hines Blvd, Dallas, TX 75390, United States.
| | - Lana M Gent
- American Heart Association, 7272 Greenville Avenue, Dallas TX 75231, United States
| | - Merrilee Sweet
- American Heart Association, 7272 Greenville Avenue, Dallas TX 75231, United States
| | - Jerry Potts
- American Heart Association, 7272 Greenville Avenue, Dallas TX 75231, United States
| | - Jeral Ahtone
- American Airlines, 4333 Amon Carter Boulevard, Fort Worth, TX 76155, United States
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas at Southwestern, 5323 Harry Hines Blvd, Dallas, TX 75390, United States
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Drennan IR, Case E, Verbeek PR, Reynolds JC, Goldberger ZD, Jasti J, Charleston M, Herren H, Idris AH, Leslie PR, Austin MA, Xiong Y, Schmicker RH, Morrison LJ. A comparison of the universal TOR Guideline to the absence of prehospital ROSC and duration of resuscitation in predicting futility from out-of-hospital cardiac arrest. Resuscitation 2016; 111:96-102. [PMID: 27923115 DOI: 10.1016/j.resuscitation.2016.11.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Revised: 11/08/2016] [Accepted: 11/21/2016] [Indexed: 01/27/2023]
Abstract
INTRODUCTION The Universal Termination of Resuscitation (TOR) Guideline accurately identifies potential out-of-hospital cardiac arrest (OHCA) survivors. However, implementation is inconsistent with some Emergency Medical Service (EMS) agencies using absence of return of spontaneous circulation (ROSC) as sole criterion for termination. OBJECTIVE To compare the performance of the Universal TOR Guideline with the single criterion of no prehospital ROSC. Second, to determine factors associated with survival for patients transported without a ROSC. Lastly, to compare the impact of time to ROSC as a marker of futility to the Universal TOR Guideline. DESIGN Retrospective, observational cohort study. PARTICIPANTS Non-traumatic, adult (≥18 years) OHCA patients of presumed cardiac etiology treated by EMS providers. SETTING ROC-PRIMED and ROC-Epistry post ROC-PRIMED databases between 2007 and 2011. OUTCOMES Primary outcome was survival to hospital discharge and the secondary outcome was functional survival. We used multivariable regression to evaluate factors associated with survival in patients transported without a ROSC. RESULTS 36,543 treated OHCAs occurred of which 9467 (26%) were transported to hospital without a ROSC. Patients transported without a ROSC who met the Universal TOR Guideline for transport had a survival of 3.0% (95% CI 2.5-3.4%) compared to 0.7% (95% CI 0.4-0.9%) in patients who met the Universal TOR Guideline for termination. The Universal TOR Guideline identified 99% of survivors requiring continued resuscitation and transportation to hospital including early identification of survivors who sustained a ROSC after extended durations of CPR. CONCLUSION Using absence of ROSC as a sole predictor of futility misses potential survivors. The Universal TOR Guideline remains a strong predictor of survival.
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Affiliation(s)
- Ian R Drennan
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Canada; Institute of Medical Science, Faculty of Medicine, University of Toronto, 30 Bond St. Toronto, Ontario M5B 1W8, Canada.
| | - Erin Case
- Clinical Trial Center, University of Washington Department of Biostatistics, Seattle, WA 98103, United States.
| | - P Richard Verbeek
- Sunnybrook Centre for Prehospital Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
| | - Joshua C Reynolds
- Department of Emergency Medicine, Michigan State University College of Human Medicine, Grand Rapids, MI, United States.
| | - Zachary D Goldberger
- University of Washington School of Medicine, Department of Internal Medicine, Division of Cardiology, Harborview Medical Center, Seattle, WA, United States.
| | - Jamie Jasti
- Resuscitation Research Centre, Department of Emergency Medicine, Medical College of Wisconsin, WI, United States.
| | | | - Heather Herren
- ROC Clinical Trial Center, University of Washington, Seattle, WA, United States.
| | - Ahamed H Idris
- Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center, United States.
| | - Paul R Leslie
- British Columbia Emergency Health Services, British Columbia, Canada.
| | - Michael A Austin
- The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada.
| | - Yan Xiong
- Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center, United States.
| | - Robert H Schmicker
- Clinical Trial Center, University of Washington Department of Biostatistics, Seattle, WA 98103, United States.
| | - Laurie J Morrison
- Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Division of Emergency Medicine, Department of Medicine, University of Toronto, Ontario, Canada.
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Xiong Y, Zheng R, Luo S, Liao J, Zhang W, Xu J, Idris AH. GW27-e0055 Conversion to shockable rhythms and subsequent reception of shocks is not necessarily a positive survival prognosticator in initially non-shockable out-of-hospital cardiac arrest patients. J Am Coll Cardiol 2016. [DOI: 10.1016/j.jacc.2016.07.684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Xiong Y, Liao J, Liu Z, Xu J, Zhang W, Zhan H, Idris AH. GW27-e0056 Outcomes of out-of-hospital cardiac arrest with initially shockable rhythm when no shock is given. J Am Coll Cardiol 2016. [DOI: 10.1016/j.jacc.2016.07.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xiong Y, Liao J, Liu Z, Xu J, Zhang W, Zhan H, Idris AH. GW27-e0054 Outcomes of out-of-hospital cardiac arrest with initially shockable rhythm no shock is given. J Am Coll Cardiol 2016. [DOI: 10.1016/j.jacc.2016.07.683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Xiong Y, Xu J, Liu Z, Idris AH. GW27-e0191 Longer ICU stay improves outcomes of hospitalized out-of-hospital cardiac arrest. J Am Coll Cardiol 2016. [DOI: 10.1016/j.jacc.2016.07.691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kudenchuk PJ, Brown SP, Daya M, Rea T, Nichol G, Morrison LJ, Leroux B, Vaillancourt C, Wittwer L, Callaway CW, Christenson J, Egan D, Ornato JP, Weisfeldt ML, Stiell IG, Idris AH, Aufderheide TP, Dunford JV, Colella MR, Vilke GM, Brienza AM, Desvigne-Nickens P, Gray PC, Gray R, Seals N, Straight R, Dorian P. Amiodarone, Lidocaine, or Placebo in Out-of-Hospital Cardiac Arrest. N Engl J Med 2016; 374:1711-22. [PMID: 27043165 DOI: 10.1056/nejmoa1514204] [Citation(s) in RCA: 262] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Antiarrhythmic drugs are used commonly in out-of-hospital cardiac arrest for shock-refractory ventricular fibrillation or pulseless ventricular tachycardia, but without proven survival benefit. METHODS In this randomized, double-blind trial, we compared parenteral amiodarone, lidocaine, and saline placebo, along with standard care, in adults who had nontraumatic out-of-hospital cardiac arrest, shock-refractory ventricular fibrillation or pulseless ventricular tachycardia after at least one shock, and vascular access. Paramedics enrolled patients at 10 North American sites. The primary outcome was survival to hospital discharge; the secondary outcome was favorable neurologic function at discharge. The per-protocol (primary analysis) population included all randomly assigned participants who met eligibility criteria and received any dose of a trial drug and whose initial cardiac-arrest rhythm of ventricular fibrillation or pulseless ventricular tachycardia was refractory to shock. RESULTS In the per-protocol population, 3026 patients were randomly assigned to amiodarone (974), lidocaine (993), or placebo (1059); of those, 24.4%, 23.7%, and 21.0%, respectively, survived to hospital discharge. The difference in survival rate for amiodarone versus placebo was 3.2 percentage points (95% confidence interval [CI], -0.4 to 7.0; P=0.08); for lidocaine versus placebo, 2.6 percentage points (95% CI, -1.0 to 6.3; P=0.16); and for amiodarone versus lidocaine, 0.7 percentage points (95% CI, -3.2 to 4.7; P=0.70). Neurologic outcome at discharge was similar in the three groups. There was heterogeneity of treatment effect with respect to whether the arrest was witnessed (P=0.05); active drugs were associated with a survival rate that was significantly higher than the rate with placebo among patients with bystander-witnessed arrest but not among those with unwitnessed arrest. More amiodarone recipients required temporary cardiac pacing than did recipients of lidocaine or placebo. CONCLUSIONS Overall, neither amiodarone nor lidocaine resulted in a significantly higher rate of survival or favorable neurologic outcome than the rate with placebo among patients with out-of-hospital cardiac arrest due to initial shock-refractory ventricular fibrillation or pulseless ventricular tachycardia. (Funded by the National Heart, Lung, and Blood Institute and others; ClinicalTrials.gov number, NCT01401647.).
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Affiliation(s)
- Peter J Kudenchuk
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Siobhan P Brown
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Mohamud Daya
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Thomas Rea
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Graham Nichol
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Laurie J Morrison
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Brian Leroux
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Christian Vaillancourt
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Lynn Wittwer
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Clifton W Callaway
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - James Christenson
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Debra Egan
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Joseph P Ornato
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Myron L Weisfeldt
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Ian G Stiell
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Ahamed H Idris
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Tom P Aufderheide
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - James V Dunford
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - M Riccardo Colella
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Gary M Vilke
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Ashley M Brienza
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Patrice Desvigne-Nickens
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Pamela C Gray
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Randal Gray
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Norman Seals
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Ron Straight
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
| | - Paul Dorian
- From the Department of Medicine (P.J.K., T.R., G.N.) and Division of Cardiology (P.J.K.), University of Washington, the King County Emergency Medical Services, Public Health (P.J.K., T.R.), the Department of Biostatistics, University of Washington Clinical Trial Center (S.P.B., G.N., B.L.), and University of Washington-Harborview Center for Prehospital Emergency Care (G.N.), Seattle, and Clark County Emergency Medical Services, Vancouver (L.W.) - all in Washington; the Department of Emergency Medicine, Oregon Health and Science University, Portland (M.D.); Rescu, Li Ka Shing Knowledge Institute, St. Michael's Hospital (L.J.M., P.D.), and the Divisions of Emergency Medicine (L.J.M.) and Cardiology (P.D.), Department of Medicine, University of Toronto, Toronto, the Department of Emergency Medicine, Ottawa Hospital Research Institute, University of Ottawa, Ottawa (C.V., I.G.S.), and the Department of Emergency Medicine, Providence Health Care Research Institute, University of British Columbia Faculty of Medicine (J.C.), and Providence Health Care Research Institute and British Columbia Emergency Health Services (R.S.), Vancouver - all in Canada; University of Pittsburgh, Pittsburgh (C.W.C., A.M.B.); National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda (D.E., P.D.-N.), and Johns Hopkins University, Baltimore (M.L.W.) - both in Maryland; the Department of Emergency Medicine, Virginia Commonwealth University, Richmond (J.P.O.); the Departments of Emergency Medicine and Internal Medicine, University of Texas Southwestern Medical Center (A.H.I.), and Dallas Fire-Rescue Department (N.S.) - both in Dallas; the Departments of Emergency Medicine (T.P.A.) and Pediatrics (M.R.C.), Medical College of Wisconsin, Milwaukee; the Department of Emergency Medicine, University of California San Diego (J.V.D., G.M.V.), and San Diego Fire-Rescue Department (J.V.D.) - both in San Diego; and University of Alabama at Birmingham, Birmingham (P.C.G., R.G.)
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Wang HE, Prince DK, Stephens SW, Herren H, Daya M, Richmond N, Carlson J, Warden C, Colella MR, Brienza A, Aufderheide TP, Idris AH, Schmicker R, May S, Nichol G. Design and implementation of the Resuscitation Outcomes Consortium Pragmatic Airway Resuscitation Trial (PART). Resuscitation 2016; 101:57-64. [PMID: 26851059 PMCID: PMC4792760 DOI: 10.1016/j.resuscitation.2016.01.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 01/07/2016] [Accepted: 01/19/2016] [Indexed: 10/22/2022]
Abstract
Airway management is an important component of resuscitation from out-of-hospital cardiac arrest (OHCA). The optimal approach to advanced airway management is unknown. The Pragmatic Airway Resuscitation Trial (PART) will compare the effectiveness of endotracheal intubation (ETI) and Laryngeal Tube (LT) insertion upon 72-h survival in adult OHCA. Encompassing United States Emergency Medical Services agencies affiliated with the Resuscitation Outcomes Consortium (ROC), PART will use a cluster-crossover randomized design. Participating subjects will include adult, non-traumatic OHCA requiring bag-valve-mask ventilation. Trial interventions will include (1) initial airway management with ETI and (2) initial airway management with LT. The primary and secondary trial outcomes are 72-h survival and return of spontaneous circulation. Additional clinical outcomes will include airway management process and adverse events. The trial will enroll a total of 3000 subjects. Results of PART may guide the selection of advanced airway management strategies in OHCA.
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Affiliation(s)
- Henry E Wang
- Department of Emergency Medicine, University of Alabama School of Medicine, Birmingham, AL, United States.
| | - David K Prince
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle, WA, United States.
| | - Shannon W Stephens
- Department of Emergency Medicine, University of Alabama School of Medicine, Birmingham, AL, United States.
| | - Heather Herren
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle, WA, United States.
| | - Mohamud Daya
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, United States.
| | | | - Jestin Carlson
- St Vincent's Medical Center, Erie, PA, United States; Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
| | - Craig Warden
- Department of Emergency Medicine, Oregon Health and Science University, Portland, OR, United States.
| | - M Riccardo Colella
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States.
| | - Ashley Brienza
- Department of Emergency Medicine, University of Pittsburgh, Pittsburgh, PA, United States.
| | - Tom P Aufderheide
- Department of Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States.
| | - Ahamed H Idris
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas, TX, United States.
| | - Robert Schmicker
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle, WA, United States.
| | - Susanne May
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle, WA, United States.
| | - Graham Nichol
- Clinical Trials Center, Department of Biostatistics, University of Washington, Seattle, WA, United States.
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