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Kawakami S, Tahara Y, Noguchi T, Yasuda S, Koga H, Nishi JI, Yonemoto N, Nonogi H, Ikeda T. Association between defibrillation-to-adrenaline interval and short-term outcomes in patients with out-of-hospital cardiac arrest and an initial shockable rhythm. Resusc Plus 2024; 18:100651. [PMID: 38711911 PMCID: PMC11070920 DOI: 10.1016/j.resplu.2024.100651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 04/19/2024] [Accepted: 04/23/2024] [Indexed: 05/08/2024] Open
Abstract
Aim The optimal timing of adrenaline administration after defibrillation in patients with out-of-hospital cardiac arrest (OHCA) and an initial shockable rhythm is unknown. We investigated the association between the defibrillation-to-adrenaline interval and clinical outcomes. Methods Between 2011 and 2020, we enrolled 1,259,960 patients with OHCA into a nationwide prospective population-based registry in Japan. After applying exclusion criteria, 20,905 patients with an initial shockable rhythm documented at emergency medical services (EMS) arrival who received adrenaline after defibrillation were eligible for this study. Multivariable logistic regression analysis was used to predict favourable short-term outcomes: prehospital return of spontaneous circulation (ROSC), 30-day survival, or a favourable neurological outcome (Cerebral Performance Category 1 or 2) at 30 days. Patients were categorised into 2-minute defibrillation-to-adrenaline intervals up to 18 min, or more than 18 min. Results At 30 days, 1,618 patients (8%) had a favourable neurological outcome. The defibrillation-to-adrenaline interval in these patients was significantly shorter than in patients with an unfavourable neurological outcome [8 (5-12) vs 11 (7-16) minutes; P < 0.001]. The proportion of patients with prehospital ROSC, 30-day survival, or a favourable neurological outcome at 30 days decreased as the defibrillation-to-adrenaline interval increased (P < 0.001 for trend). Multivariable analysis revealed that a defibrillation-to-adrenaline interval of > 6 min was an independent predictor of worse prehospital ROSC, 30-day survival, or neurological outcome at 30 days when compared with an interval of 4-6 min. Conclusion A longer defibrillation-to-adrenaline interval was significantly associated with worse short-term outcomes in patients with OHCA and an initial shockable rhythm.
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Affiliation(s)
- Shoji Kawakami
- Department of Cardiology, Aso Iizuka Hospital, Fukuoka, Japan
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yoshio Tahara
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Teruo Noguchi
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Satoshi Yasuda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan
- Department of Cardiovascular Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hidenobu Koga
- Clinical Research Support Office, Aso Iizuka Hospital, Fukuoka, Japan
| | | | - Naohiro Yonemoto
- Department of Public Health, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroshi Nonogi
- Faculty of Health Science, Osaka Aoyama University, Minoo, Japan
| | - Takanori Ikeda
- Department of Cardiovascular Medicine, Toho University Faculty of Medicine, Tokyo, Japan
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Garcia SI, Seelhammer TG, Saddoughi SA, Finch AS, Park JG, Wieruszewski PM. Cumulative epinephrine dose during cardiac arrest and neurologic outcome after extracorporeal cardiopulmonary resuscitation. Am J Emerg Med 2024; 80:61-66. [PMID: 38507848 DOI: 10.1016/j.ajem.2024.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/16/2024] [Accepted: 03/11/2024] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Epinephrine is recommended without an apparent ceiling dosage during cardiac arrest. However, excessive alpha- and beta-adrenergic stimulation may contribute to unnecessarily high aortic afterload, promote post-arrest myocardial dysfunction, and result in cerebral microvascular insufficiency in patients receiving extracorporeal cardiopulmonary resuscitation (ECPR). METHODS This was a retrospective cohort study of adults (≥ 18 years) who received ECPR at large academic ECMO center from 2018 to 2022. Patients were grouped based on the amount of epinephrine given during cardiac arrest into low (≤ 3 mg) and high (> 3 mg) groups. The primary endpoint was neurologic outcome at hospital discharge, defined by cerebral performance category (CPC). Multivariable logistic regression was used to assess the relationship between cumulative epinephrine dosage during arrest and neurologic outcome. RESULTS Among 51 included ECPR cases, the median age of patients was 60 years, and 55% were male. The mean cumulative epinephrine dose administered during arrest was 6.2 mg but ranged from 0 to 24 mg. There were 18 patients in the low-dose (≤ 3 mg) and 25 patients in the high-dose (> 3 mg) epinephrine groups. Favorable neurologic outcome at discharge was significantly greater in the low-dose (55%) compared to the high-dose (24%) group (p = 0.025). After adjusting for age, those who received higher doses of epinephrine during the arrest were more likely to have unfavorable neurologic outcomes at hospital discharge (odds ratio 4.6, 95% CI 1.3, 18.0, p = 0.017). CONCLUSION After adjusting for age, cumulative epinephrine doses above 3 mg during cardiac arrest may be associated with unfavorable neurologic outcomes after ECPR and require further investigation.
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Affiliation(s)
- Samuel I Garcia
- Department of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
| | - Troy G Seelhammer
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
| | - Sahar A Saddoughi
- Division of Thoracic Surgery, Department of Surgery, Mayo Clinic College of Medicine and Science, Rochester, MN, USA; Department of Cardiovascular Surgery, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
| | - Alexander S Finch
- Department of Emergency Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
| | - John G Park
- Department of Pulmonary, Critical Care and Sleep Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
| | - Patrick M Wieruszewski
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic College of Medicine and Science, Rochester, MN, USA; Department of Pharmacy, Mayo Clinic College of Medicine and Science, Rochester, MN, USA.
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3
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Tiba MH, Nakashima T, McCracken BM, Hsu CH, Gottula AL, Greer NL, Cramer TA, Sutton NR, Ward KR, Neumar RW. Haemodynamic impact of aortic balloon occlusion combined with percutaneous left ventricular assist device during cardiopulmonary resuscitation in a swine model of cardiac arrest. Resuscitation 2023; 189:109885. [PMID: 37385400 DOI: 10.1016/j.resuscitation.2023.109885] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/19/2023] [Accepted: 06/12/2023] [Indexed: 07/01/2023]
Abstract
AIM To investigate the effect of tandem use of transient balloon occlusion of the descending aorta (AO) and percutaneous left ventricular assist device (pl-VAD) during cardiopulmonary resuscitation in a large animal model of prolonged cardiac arrest. METHODS Ventricular fibrillation was induced and left untreated for 8 minutes followed by 16 minutes of mechanical CPR (mCPR) in 24 swine, under general anesthesia. Animals were randomized to 3 treatment groups (n = 8 per group): A) pL-VAD (Impella CP®) B) pL-VAD+AO, and C) AO. Impella CP® and the aortic balloon catheter were inserted via the femoral arteries. mCPR was continued during treatment. Defibrillation was attempted 3 times starting at minute 28 and then every 4 minutes. Haemodynamic, cardiac function and blood gas measurements were recorded for up to 4 hours. RESULTS Coronary perfusion pressure (CoPP) in the pL-VAD+AO Group increased by a mean (SD) of 29.2(13.94) mmHg compared to an increase of 7.1(12.08) and 7.1(5.95) mmHg for groups pL-VAD and AO respectively (p = 0.02). Similarly, cerebral perfusion pressure (CePP) in pL-VAD+AO increased by a mean (SD) of 23.6 (6.11), mmHg compared with 0.97 (9.07) and 6.9 (7.98) mmHg for the other two groups (p < 0.001). The rate of return of spontaneous heartbeat (ROSHB) was 87.5%, 75%, and 100% for pL-VAD+AO, pL-VAD, and AO. CONCLUSION Combined AO and pL-VAD improved CPR hemodynamics compared to either intervention alone in this swine model of prolonged cardiac arrest.
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Affiliation(s)
- Mohamad Hakam Tiba
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
| | - Takahiro Nakashima
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
| | - Brendan M McCracken
- Department of Radiology, University of Michigan, Ann Arbor, MI, United States.
| | - Cindy H Hsu
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
| | - Adam L Gottula
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
| | - Nicholas L Greer
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
| | - Traci A Cramer
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
| | - Nadia R Sutton
- Department of Internal Medicine, Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN, United States.
| | - Kevin R Ward
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States.
| | - Robert W Neumar
- Department of Emergency Medicine, University of Michigan, Ann Arbor, MI, United States; The Max Harry Weil Institute for Critical Care Research and Innovation, University of Michigan, Ann Arbor, MI, United States.
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Ran L, Liu J, Tanaka H, Hubble MW, Hiroshi T, Huang W. Early Administration of Adrenaline for Out-of-Hospital Cardiac Arrest: A Systematic Review and Meta-Analysis. J Am Heart Assoc 2020; 9:e014330. [PMID: 32441184 PMCID: PMC7429014 DOI: 10.1161/jaha.119.014330] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background The use of adrenaline in out‐of‐hospital cardiac arrest (OHCA) patients is still controversial. This study aimed to determine the effects of early pre‐hospital adrenaline administration in OHCA patients. Methods and Results PubMed, EMBASE, Google Scholar, and the Cochrane Library database were searched from study inception to February 2019 to identify studies that reported OHCA patients who received adrenaline. The primary outcome was survival to discharge, and the secondary outcomes were return of spontaneous circulation, favorable neurological outcome, and survival to hospital admission. A total of 574 392 patients were included from 24 studies. The use of early pre‐hospital adrenaline administration in OHCA patients was associated with a significant increase in survival to discharge (risk ratio [RR], 1.62; 95% CI, 1.45–1.83; P<0.001) and return of spontaneous circulation (RR, 1.50; 95% CI, 1.36–1.67; P<0.001), as well as a favorable neurological outcome (RR, 2.09; 95% CI, 1.73–2.52; P<0.001). Patients with shockable rhythm cardiac arrest had a significantly higher rate of survival to discharge (RR, 5.86; 95% CI, 4.25–8.07; P<0.001) and more favorable neurological outcomes (RR, 5.10; 95% CI, 2.90–8.97; P<0.001) than non‐shockable rhythm cardiac arrest patients. Conclusions Early pre‐hospital administration of adrenaline to OHCA patients might increase the survival to discharge, return of spontaneous circulation, and favorable neurological outcomes. Registration URL: https://www.crd.york.ac.uk/PROSPERO; Unique identifier: CRD42019130542.
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Affiliation(s)
- Liyu Ran
- Department of Orthopaedic Surgery and Orthopaedics Research Institute West China Hospital Sichuan University Chengdu China.,Department of Cardiology First Affiliated Hospital Chongqing Medical University Chongqing China
| | - Jinglun Liu
- Department of Emergency Medicine and Critical Care Medicine The First Affiliated Hospital of Chongqing Medical University Chongqing China
| | - Hideharu Tanaka
- Department of EMS System Graduate School Kokushikan University Tokyo Japan
| | - Michael W Hubble
- Emergency Medical Science Department Wake Technical Community College Raleigh NC
| | - Takyu Hiroshi
- Department of EMS System Graduate School Kokushikan University Tokyo Japan
| | - Wei Huang
- Department of Cardiology First Affiliated Hospital Chongqing Medical University Chongqing China
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The Association of the Average Epinephrine Dosing Interval and Survival With Favorable Neurologic Status at Hospital Discharge in Out-of-Hospital Cardiac Arrest. Ann Emerg Med 2019; 74:797-806. [DOI: 10.1016/j.annemergmed.2019.04.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/15/2019] [Accepted: 04/25/2019] [Indexed: 11/18/2022]
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Panchal AR, Berg KM, Hirsch KG, Kudenchuk PJ, Del Rios M, Cabañas JG, Link MS, Kurz MC, Chan PS, Morley PT, Hazinski MF, Donnino MW. 2019 American Heart Association Focused Update on Advanced Cardiovascular Life Support: Use of Advanced Airways, Vasopressors, and Extracorporeal Cardiopulmonary Resuscitation During Cardiac Arrest: An Update to the American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation 2019; 140:e881-e894. [PMID: 31722552 DOI: 10.1161/cir.0000000000000732] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The fundamentals of cardiac resuscitation include the immediate provision of high-quality cardiopulmonary resuscitation combined with rapid defibrillation (as appropriate). These mainstays of therapy set the groundwork for other possible interventions such as medications, advanced airways, extracorporeal cardiopulmonary resuscitation, and post-cardiac arrest care, including targeted temperature management, cardiorespiratory support, and percutaneous coronary intervention. Since 2015, an increased number of studies have been published evaluating some of these interventions, requiring a reassessment of their use and impact on survival from cardiac arrest. This 2019 focused update to the American Heart Association advanced cardiovascular life support guidelines summarizes the most recent published evidence for and recommendations on the use of advanced airways, vasopressors, and extracorporeal cardiopulmonary resuscitation during cardiac arrest. It includes revised recommendations for all 3 areas, including the choice of advanced airway devices and strategies during cardiac arrest (eg, bag-mask ventilation, supraglottic airway, or endotracheal intubation), the training and retraining required, the administration of standard-dose epinephrine, and the decisions involved in the application of extracorporeal cardiopulmonary resuscitation and its potential impact on cardiac arrest survival.
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7
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Al-Mulhim MA, Alshahrani MS, Asonto LP, Abdulhady A, Almutairi TM, Hajji M, Alrubaish MA, Almulhim KN, Al-Sulaiman MH, Al-Qahtani LB. Impact of epinephrine administration frequency in out-of-hospital cardiac arrest patients: a retrospective analysis in a tertiary hospital setting. J Int Med Res 2019; 47:4272-4283. [PMID: 31311363 PMCID: PMC6753528 DOI: 10.1177/0300060519860952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Introduction Epinephrine is recommended for patients with out-of-hospital cardiac arrest
(OHCA). However, whether epinephrine improves or adversely affects OHCA
outcomes is controversial. Objectives This study aims to determine whether the frequency of epinephrine
administration impacts OHCA patient survival. Methods We conducted a retrospective analysis of OHCA cases registered in the
Emergency Department at King Fahd University Hospital, Saudi Arabia between
2005 and 2015. The primary outcomes were mortality and survival rates until
discharge. The impact of epinephrine administration timing and frequency on
patient survival was analyzed. Results Data from 300 OHCA cases were analyzed. Among them, 66.3% were men, and the
overall mean age of 50.4 ± 20.6 years. The overall survival rate until
hospital discharge was 12%. There was no statistically significant
difference between in gender, age, or time interval to the first epinephrine
dose in the survival and non-survival groups. Only the number of epinephrine
doses was related to the survival outcome. Conclusion Non-survivors received significantly more epinephrine doses compared with
survivors. However, a causal relationship between OHCA patient survival and
epinephrine dose and time cannot be confirmed. Further studies are needed to
investigate whether the long-term outcomes in OHCA patients are influenced
by the timing and frequency of epinephrine administration.
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Affiliation(s)
- Mohammed A Al-Mulhim
- College of Medicine, Imam Abdulrahman Bin Faisal University, Kingdom of Saudi Arabia
| | - Mohammed S Alshahrani
- College of Medicine, Imam Abdulrahman Bin Faisal University, Kingdom of Saudi Arabia
| | - Laila Perlas Asonto
- College of Medicine, Imam Abdulrahman Bin Faisal University, Kingdom of Saudi Arabia
| | - Ahmad Abdulhady
- College of Medicine, Imam Abdulrahman Bin Faisal University, Kingdom of Saudi Arabia
| | - Talal M Almutairi
- College of Medicine, Imam Abdulrahman Bin Faisal University, Kingdom of Saudi Arabia
| | | | - Mohammed A Alrubaish
- College of Medicine, Imam Abdulrahman Bin Faisal University, Kingdom of Saudi Arabia
| | - Khalid N Almulhim
- College of Medicine, King Faisal University, Al-Ahsa, Kingdom of Saudi Arabia
| | | | - Layla B Al-Qahtani
- Children's Specialist Hospital, King Fahad Medical City, Riyadh, Kingdom of Saudi Arabia
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8
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Vasopressors during adult cardiac arrest: A systematic review and meta-analysis. Resuscitation 2019; 139:106-121. [DOI: 10.1016/j.resuscitation.2019.04.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 04/03/2019] [Accepted: 04/04/2019] [Indexed: 02/04/2023]
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Tiba MH, McCracken BM, Cummings BC, Colmenero CI, Rygalski CJ, Hsu CH, Sanderson TH, Nallamothu BK, Neumar RW, Ward KR. Use of resuscitative balloon occlusion of the aorta in a swine model of prolonged cardiac arrest. Resuscitation 2019; 140:106-112. [PMID: 31121206 DOI: 10.1016/j.resuscitation.2019.05.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 05/01/2019] [Accepted: 05/13/2019] [Indexed: 12/20/2022]
Abstract
AIM We examined the use of a Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) catheter during cardiopulmonary resuscitation (CPR) after cardiac arrest (CA) to assess its effect on haemodynamics such as coronary perfusion pressure (CPP), common carotid artery blood flow (CCA-flow) and end-tidal CO2 (PetCO2) which are associated with increased return of spontaneous circulation (ROSC). METHODS Six male swine were instrumented to measure CPP, CCA-Flow, and PetCO2. A 7Fr REBOA was advanced into zone-1 of the aorta through the femoral artery. Ventricular fibrillation was induced and untreated for 8 min. CPR (manual then mechanical) was initiated for 24 min. Continuous infusion of adrenaline (epinephrine) was started at minute-4 of CPR. The REBOA balloon was inflated at minute-16 for 3 min and then deflated/inflated every 3 min for 3 cycles. Animals were defibrillated up to 6 times after the final cycle. Animals achieving ROSC were monitored for 25 min. RESULTS Data showed significant differences between balloon deflation and inflation periods for CPP, CCA-Flow, and PetCO2 (p < 0.0001) with an average difference (SD) of 13.7 (2.28) mmHg, 15.5 (14.12) mL min-1 and -4 (2.76) mmHg respectively. Three animals achieved ROSC and had significantly higher mean CPP (54 vs. 18 mmHg), CCA-Flow (262 vs. 135 mL min-1) and PetCO2 (16 vs. 8 mmHg) (p < 0.0001) throughout inflation periods than No-ROSC animals. Aortic histology did not reveal any significant changes produced by balloon inflation. CONCLUSION REBOA significantly increased CPP and CCA-Flow in this model of prolonged CA. These increases may contribute to the ability to achieve ROSC.
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Affiliation(s)
- Mohamad Hakam Tiba
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Brendan M McCracken
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Brandon C Cummings
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Carmen I Colmenero
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Chandler J Rygalski
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Molecular and Integrative Physiology, United States.
| | - Cindy H Hsu
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States; University of Michigan, Department of Surgery.
| | - Thomas H Sanderson
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Molecular and Integrative Physiology, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Brahmajee K Nallamothu
- University of Michigan, Department of Internal Medicine, Division of Cardiology, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Robert W Neumar
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
| | - Kevin R Ward
- University of Michigan, Department of Emergency Medicine, United States; University of Michigan, Department of Biomedical Engineering, United States; University of Michigan, Department of Michigan Center for Integrative Research in Critical Care, United States.
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Granfeldt A, Avis SR, Nicholson TC, Holmberg MJ, Moskowitz A, Coker A, Berg KM, Parr MJ, Donnino MW, Soar J, Nation K, Andersen LW. Advanced airway management during adult cardiac arrest: A systematic review. Resuscitation 2019; 139:133-143. [PMID: 30981882 DOI: 10.1016/j.resuscitation.2019.04.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 01/10/2023]
Abstract
AIM To systematically review the literature on advanced airway management during adult cardiac arrest in order to inform the International Liaison Committee of Resuscitation (ILCOR) consensus on science and treatment recommendations. METHODS The review was performed according to PRISMA guidelines and registered on PROSPERO (CRD42018115556). We searched Medline, Embase, and Evidence-Based Medicine Reviews for controlled trials and observational studies published before October 30, 2018. The population included adult patients with cardiac arrest. Two investigators reviewed studies for relevance, extracted data, and assessed the risk of bias of individual studies. RESULTS We included 78 observational studies and 11 controlled trials. Most of the observational studies and all of the controlled trials only included patients with out-of-hospital cardiac arrest. The risk of bias for individual observational studies was overall assessed as critical or serious, with confounding and selection bias being the primary sources of bias. Three of the controlled trials, all published in 2018, were powered for clinical outcomes with two comparing a supraglottic airway to tracheal intubation and one comparing bag-mask ventilation to tracheal intubation. All three trials had some concerns regarding risk of bias primarily due to lack of blinding and variable adherence to the protocol. Clinical and methodological heterogeneity across studies, for both the observational studies and the controlled trials, precluded any meaningful meta-analyses. CONCLUSIONS We identified a large number of studies related to advanced airway management in adult cardiac arrest. Three recently published, large randomized trials in out-of-hospital cardiac arrest will help to inform future guidelines. Trials of advanced airway management during in-hospital cardiac arrest are lacking.
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Affiliation(s)
- Asger Granfeldt
- Department of Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Suzanne R Avis
- School of Medicine, University of Tasmania - SydneyCampus, Sydney, Australia
| | | | - Mathias J Holmberg
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University Hospital and Aarhus University, Aarhus, Denmark; Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Ari Moskowitz
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA; Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Amin Coker
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Katherine M Berg
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA; Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Michael J Parr
- Intensive Care Unit, Liverpool Hospital, University of New South Wales, Sydney, Australia
| | - Michael W Donnino
- Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA; Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Jasmeet Soar
- Intensive Care Unit, Southmead Hospital, Bristol, United Kingdom
| | - Kevin Nation
- New Zealand Resuscitation Council, Wellington, New Zealand
| | - Lars W Andersen
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University Hospital and Aarhus University, Aarhus, Denmark; Center for Resuscitation Science, Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Boston, MA, USA; Department of Intensive Care Medicine, Randers Regional Hospital, Randers, Denmark.
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Comparative Analysis of Emergency Medical Service Provider Workload During Simulated Out-of-Hospital Cardiac Arrest Resuscitation Using Standard Versus Experimental Protocols and Equipment. Simul Healthc 2018; 13:376-386. [PMID: 30407958 DOI: 10.1097/sih.0000000000000339] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Protocolized automation of critical, labor-intensive tasks for out-of-hospital cardiac arrest (OHCA) resuscitation may decrease Emergency Medical Services (EMS) provider workload. A simulation-based assessment method incorporating objective and self-reported metrics was developed and used to quantify workloads associated with standard and experimental approaches to OHCA resuscitation. METHODS Emergency Medical Services-Basic (EMT-B) and advanced life support (ALS) providers were randomized into two-provider mixed-level teams and fitted with heart rate (HR) monitors for continuous HR and energy expenditure (EE) monitoring. Subjects' resting salivary α-amylase (sAA) levels were measured along with Borg perceived exertion scores and multidimensional workload assessments (NASA-TLX). Each team engaged in the following three OHCA simulations: (1) baseline simulation in standard BLS/ALS roles; (2) repeat simulation in standard roles; and then (3) repeat simulation in reversed roles, ie, EMT-B provider performing ALS tasks. Control teams operated with standard state protocols and equipment; experimental teams used resuscitation-automating devices and accompanying goal-directed algorithmic protocol for simulations 2 and 3. Investigators video-recorded resuscitations and analyzed subjects' percent attained of maximal age-predicted HR (%mHR), EE, sAA, Borg, and NASA-TLX measurements. RESULTS Ten control and ten experimental teams completed the study (20 EMT-Basic; 1 EMT-Intermediate, 8 EMT-Cardiac, 11 EMT-Paramedic). Median %mHR, EE, sAA, Borg, and NASA-TLX scores did not differ between groups at rest. Overall multivariate analyses of variance did not detect significant differences; univariate analyses of variance for changes in %mHR, Borg, and NASA-TLX from resting state detected significant differences across simulations (workload reductions in experimental groups for simulations 2 and 3). CONCLUSIONS A simulation-based OHCA resuscitation performance and workload assessment method compared protocolized automation-assisted resuscitation with standard response. During exploratory application of the assessment method, subjects using the experimental approach appeared to experience reduced levels of physical exertion and perceived workload than control subjects.
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Abstract
Cardiac arrest is a leading cause of death in the United States, with a hospital discharge rate of approximately 10%. International resuscitation guidelines offer standardized cardiac arrest management approaches, but beyond the guidelines, are promising innovations to improve resuscitative care. Although clinical data do not yet support the routine use of mechanical chest compressions, corticosteroids, thrombolytics, and adjunctive ventilation devices during arrest, these therapies may have an important role in select patients. Extracorporeal membrane oxygenation during cardiopulmonary resuscitation is a promising advancement and may have survival benefit in select patients. The evidence for standard therapies and these innovations is discussed.
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Affiliation(s)
- Bram J Geller
- Department of Cardiovascular Medicine, University of Pennsylvania, Perelman Center for Advanced Medicine, South Pavilion 11th Floor, 3400 Civic Center Boulevard, Philadelphia, PA 19104, USA.
| | - Benjamin S Abella
- Department of Emergency Medicine, University of Pennsylvania, 3400 Spruce Street Ground Ravdin, Philadelphia, PA 19104, USA
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Homma Y, Shiga T, Funakoshi H, Miyazaki D, Sakurai A, Tahara Y, Nagao K, Yonemoto N, Yaguchi A, Morimura N. Association of the time to first epinephrine administration and outcomes in out-of-hospital cardiac arrest: SOS-KANTO 2012 study. Am J Emerg Med 2018; 37:241-248. [PMID: 29804789 DOI: 10.1016/j.ajem.2018.05.037] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/15/2018] [Accepted: 05/20/2018] [Indexed: 11/25/2022] Open
Abstract
OBJECTIVE This study assessed the association between the timing of first epinephrine administration (EA) and the neurological outcomes following out-of-hospital cardiac arrests (OHCAs) with both initial shockable and non-shockable rhythms. METHODS This was a post-hoc analysis of a multicenter prospective cohort study (SOS-KANTO 2012), which registered OHCA patients in the Kanto region of Japan from January 2012 to March 2013. We included consecutive adult OHCA patients who received epinephrine. The primary result included 1-month favorable neurological outcomes defined as cerebral performance category (CPC) 1 or 2. Secondary results included 1-month survival and return of spontaneous circulation (ROSC) after arrival at the hospital. Multivariable logistic regression analysis determined the association between delay per minute of the time from call to first EA in both pre- or in-hospital settings and outcomes. RESULTS Of the 16,452 patients, 9344 were eligible for our analyses. In univariable analysis, the delay in EA was associated with decreased favorable neurological outcomes only when the initial rhythm was a non-shockable rhythm. In multivariable analyses, delay in EA was associated with decreased ROSC (adjusted odds ratio [OR] for one minute delay, 0.97; 95% confidence interval [CI], 0.96-0.98) and 1-month survival (adjusted OR, 0.95; 95% CI, 0.92-0.97) when the initial rhythm was a non-shockable rhythm, whereas during a shockable rhythm, delay in EA was not associated with decreased ROSC and 1-month survival. CONCLUSIONS While assessing the effectiveness of epinephrine for OHCA, we should consider the time-limited effects of epinephrine. Additionally, consideration of early EA based on the pathophysiology is needed.
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Affiliation(s)
- Yosuke Homma
- Department of Emergency Medicine and Critical Care, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan; Center for Clinical Epidemiology, St. Luke's International University, Tokyo, Japan.
| | - Takashi Shiga
- Department of Emergency Medicine and Critical Care, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan; Department of Emergency Medicine, International University of Health and Welfare, Tokyo, Japan
| | - Hiraku Funakoshi
- Department of Emergency Medicine and Critical Care, Tokyo Bay Urayasu Ichikawa Medical Center, Chiba, Japan
| | - Dai Miyazaki
- Advanced Emergency Medical and Critical Care Center, Japanese Redcross Maebashi Hospital, Gunma, Japan
| | - Atsushi Sakurai
- Division of Emergency and Critical Care Medicine, Department of Acute Medicine, Nihon University School of Medicine, Itabashi-ku, Tokyo, Japan
| | - Yoshio Tahara
- Department of Cardiovascular Medicine, National Cerebral and Cardio-vascular Center Hospital, Suita, Osaka, Japan
| | - Ken Nagao
- Cardiovascular Center, Nihon University Surugadai Hospital, Chiyoda-ku, Tokyo, Japan
| | - Naohiro Yonemoto
- Department of Biostatistics, School of Public Health, Kyoto University, Yoshida-konoe, Kyoto, Japan
| | - Arino Yaguchi
- Department of Critical Care and Emergency Medicine, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - Naoto Morimura
- Department of Emergency and Critical Care Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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Does Antiarrhythmic Drug During Cardiopulmonary Resuscitation Improve the One-month Survival: The SOS-KANTO 2012 Study. J Cardiovasc Pharmacol 2017; 68:58-66. [PMID: 27002279 DOI: 10.1097/fjc.0000000000000388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Antiarrhythmic drugs (AAD) are often used for fatal ventricular arrhythmias during cardiopulmonary resuscitation (CPR). However, the efficacy of initial AAD administration during CPR in improving long-term prognosis remains unknown. This study retrospectively evaluated the effect of AAD administration during CPR on 1-month prognosis in the SOS-KANTO 2012 study population. METHODS AND RESULTS Of the 16,164 out-of-hospital cardiac arrest cases, 1350 shock-refractory patients were included: 747 patients not administered AAD and 603 patients administered AAD. Statistical adjustment for potential selection bias was performed using propensity score matching, yielding 1162 patients of whom 792 patients were matched (396 pairs). The primary outcome was 1-month survival. The secondary outcome was the proportion of patients with favorable neurological outcome at 1 month. Logistic regression with propensity scoring demonstrated an odds ratio (OR) for 1-month survival in the AAD group of 1.92 (P < 0.01), whereas the OR for favorable neurological outcome at 1 month was 1.44 (P = 0.26). CONCLUSIONS Significantly greater 1-month survival was observed in the AAD group compared with the non-AAD group. However, the effect of ADD on the likelihood of a favorable neurological outcome remains unclear. The findings of the present study may indicate a requirement for future randomized controlled trials evaluating the effect of ADD administration during CPR on long-term prognosis.
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Kim TH, Lee EJ, Shin SD, Ro YS, Kim YJ, Ahn KO, Song KJ, Hong KJ, Lee KW. Neurological Favorable Outcomes Associated with EMS Compliance and On-Scene Resuscitation Time Protocol. PREHOSP EMERG CARE 2017; 22:214-221. [PMID: 28952823 DOI: 10.1080/10903127.2017.1367443] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE Korean national emergency care protocol for EMS providers recommends a minimum of 5 minutes of on-scene resuscitation before transport to hospital in cases of Out-of-Hospital Cardiac Arrest (OHCA). We compared survival outcome of OHCA patients according to scene time interval (STI)-protocol compliance of EMS. METHODS EMS treated adult OHCAs with presumed cardiac etiology during a two-year period were analyzed. Non-compliance was defined as hospital transport with STI less than 6 minutes without return of spontaneous circulation (ROSC) on scene. Propensity score for compliance with protocol was calculated and based on the calculated propensity score, 1:1 matching was performed between compliance and non-compliance group. Univariate analysis as well as multivariable logistic model was used to evaluate the effect of compliance to survival outcome. RESULTS Among a total of 28,100 OHCAs, EMS transported 7,026 (25.0%) cardiac arrests without ROSC on the scene with an STI less than 6 minutes. A total of 6,854 cases in each group were matched using propensity score matching. Overall survival to discharge rate did not differ in both groups (4.6% for compliance group vs. 4.5 for non-compliance group, p = 0.78). Adjusted odds ratio of compliance for survival to discharge were 1.12 (95% CI 0.92-1.36). More patients with favorable neurological outcome was shown in compliance group (2.5% vs. 1.7%, p < 0.01) and adjusted odds ratio was 1.91 (95% CI 1.42-2.59). CONCLUSIONS Although survival to discharge rate did not differ for patient with EMS non-compliance with STI protocol, lesser patients survived with favorable neurological outcomes when EMS did not stay for sufficient time on scene in OHCA before transport.
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Quick epinephrine administration induces favorable neurological outcomes in out-of-hospital cardiac arrest patients. Am J Emerg Med 2017; 35:676-680. [DOI: 10.1016/j.ajem.2016.12.066] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 12/26/2016] [Indexed: 11/23/2022] Open
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Impact of Early Vasopressor Administration on Neurological Outcomes after Prolonged Out-of-Hospital Cardiac Arrest. Prehosp Disaster Med 2017; 32:297-304. [PMID: 28222830 DOI: 10.1017/s1049023x17000115] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Introduction Vasopressors are associated with return of spontaneous circulation (ROSC), but no long-term benefit has been demonstrated in randomized trials. However, these trials did not control for the timing of vasopressor administration which may influence outcomes. Consequently, the objective of this study was to develop a model describing the likelihood of favorable neurological outcome (cerebral performance category [CPC] 1 or 2) as a function of the public safety answering point call receipt (PSAP)-to-pressor-interval (PPI) in prolonged out-of-hospital cardiac arrest. Hypothesis The likelihood of favorable neurological outcome declines with increasing PPI. METHODS This investigation was a retrospective study of cardiac arrest using linked data from the Cardiac Arrest Registry to Enhance Survival (CARES) database (Centers for Disease Control and Prevention [Atlanta, Georgia USA]; American Heart Association [Dallas, Texas USA]; and Emory University Department of Emergency Medicine [Atlanta, Georgia USA]) and the North Carolina (USA) Prehospital Medical Information System. Adult patients suffering a bystander-witnessed, non-traumatic cardiac arrest between January 2012 and June 2014 were included. Logistic regression was used to calculate the adjusted odds ratio (OR) of neurological outcome as a function of PPI, while controlling for patient age, gender, and race; endotracheal intubation (ETI); shockable rhythm; layperson cardiopulmonary resuscitation (CPR); and field hypothermia. RESULTS Of the 2,100 patients meeting inclusion criteria, 913 (43.5%) experienced ROSC, 618 (29.4%) survived to hospital admission, 187 (8.9%) survived to hospital discharge, and 155 (7.4%) were discharged with favorable neurological outcomes (CPC 1 or 2). Favorable neurological outcome was less likely with increasing PPI (OR=0.90; P<.01) and increasing age (OR=0.97; P<.01). Compared to patients with non-shockable rhythms, patients with shockable rhythms were more likely to have favorable neurological outcomes (OR=7.61; P<.01) as were patients receiving field hypothermia (OR=2.13; P<.01). Patient gender, non-Caucasian race, layperson CPR, and ETI were not independent predictors of favorable neurological outcome. CONCLUSION In this evaluation, time to vasopressor administration was significantly associated with favorable neurological outcome. Among adult, witnessed, non-traumatic arrests, the odds of hospital discharge with CPC 1 or 2 declined by 10% for every one-minute delay between PSAP call-receipt and vasopressor administration. These retrospective observations support the notion of a time-dependent function of vasopressor effectiveness on favorable neurological outcome. Large, prospective studies are needed to verify this relationship. Hubble MW , Tyson C . Impact of early vasopressor administration on neurological outcomes after prolonged out-of-hospital cardiac arrest. Prehosp Disaster Med. 2017; 32(3):297-304.
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Tanaka H, Takyu H, Sagisaka R, Ueta H, Shirakawa T, Kinoshi T, Takahashi H, Nakagawa T, Shimazaki S, Ong Eng Hock M. Favorable neurological outcomes by early epinephrine administration within 19 minutes after EMS call for out-of-hospital cardiac arrest patients. Am J Emerg Med 2016; 34:2284-2290. [DOI: 10.1016/j.ajem.2016.08.026] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 08/09/2016] [Accepted: 08/11/2016] [Indexed: 11/17/2022] Open
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The influences of adrenaline dosing frequency and dosage on outcomes of adult in-hospital cardiac arrest: A retrospective cohort study. Resuscitation 2016; 103:125-130. [DOI: 10.1016/j.resuscitation.2015.12.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 11/16/2015] [Accepted: 12/16/2015] [Indexed: 11/22/2022]
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Callaway CW, Soar J, Aibiki M, Böttiger BW, Brooks SC, Deakin CD, Donnino MW, Drajer S, Kloeck W, Morley PT, Morrison LJ, Neumar RW, Nicholson TC, Nolan JP, Okada K, O'Neil BJ, Paiva EF, Parr MJ, Wang TL, Witt J. Part 4: Advanced Life Support: 2015 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science With Treatment Recommendations. Circulation 2016; 132:S84-145. [PMID: 26472860 DOI: 10.1161/cir.0000000000000273] [Citation(s) in RCA: 234] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Link MS, Berkow LC, Kudenchuk PJ, Halperin HR, Hess EP, Moitra VK, Neumar RW, O'Neil BJ, Paxton JH, Silvers SM, White RD, Yannopoulos D, Donnino MW. Part 7: Adult Advanced Cardiovascular Life Support: 2015 American Heart Association Guidelines Update for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care. Circulation 2016; 132:S444-64. [PMID: 26472995 DOI: 10.1161/cir.0000000000000261] [Citation(s) in RCA: 798] [Impact Index Per Article: 99.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lundin A, Djärv T, Engdahl J, Hollenberg J, Nordberg P, Ravn-Fischer A, Ringh M, Rysz S, Svensson L, Herlitz J, Lundgren P. Drug therapy in cardiac arrest: a review of the literature. EUROPEAN HEART JOURNAL. CARDIOVASCULAR PHARMACOTHERAPY 2015; 2:54-75. [DOI: 10.1093/ehjcvp/pvv047] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 10/28/2015] [Indexed: 01/01/2023]
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Soar J, Callaway CW, Aibiki M, Böttiger BW, Brooks SC, Deakin CD, Donnino MW, Drajer S, Kloeck W, Morley PT, Morrison LJ, Neumar RW, Nicholson TC, Nolan JP, Okada K, O’Neil BJ, Paiva EF, Parr MJ, Wang TL, Witt J, Andersen LW, Berg KM, Sandroni C, Lin S, Lavonas EJ, Golan E, Alhelail MA, Chopra A, Cocchi MN, Cronberg T, Dainty KN, Drennan IR, Fries M, Geocadin RG, Gräsner JT, Granfeldt A, Heikal S, Kudenchuk PJ, Lagina AT, Løfgren B, Mhyre J, Monsieurs KG, Mottram AR, Pellis T, Reynolds JC, Ristagno G, Severyn FA, Skrifvars M, Stacey WC, Sullivan J, Todhunter SL, Vissers G, West S, Wetsch WA, Wong N, Xanthos T, Zelop CM, Zimmerman J. Part 4: Advanced life support. Resuscitation 2015; 95:e71-120. [DOI: 10.1016/j.resuscitation.2015.07.042] [Citation(s) in RCA: 214] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Hubble MW, Johnson C, Blackwelder J, Collopy K, Houston S, Martin M, Wilkes D, Wiser J. Probability of Return of Spontaneous Circulation as a Function of Timing of Vasopressor Administration in Out-of-Hospital Cardiac Arrest. PREHOSP EMERG CARE 2015; 19:457-63. [DOI: 10.3109/10903127.2015.1005262] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Rapid epinephrine administration improves early outcomes in out-of-hospital cardiac arrest. Resuscitation 2013; 84:915-20. [DOI: 10.1016/j.resuscitation.2013.03.023] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 02/28/2013] [Accepted: 03/11/2013] [Indexed: 11/24/2022]
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