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Rammos A, Bechlioulis A, Chatzipanteliadou S, Sioros SA, Floros CD, Stamou I, Lakkas L, Kalogeras P, Bouratzis V, Katsouras CS, Michalis LK, Naka KK. The Role of Prognostic Scores in Assessing the Prognosis of Patients Admitted in the Cardiac Intensive Care Unit: Emphasis on Heart Failure Patients. J Clin Med 2024; 13:2982. [PMID: 38792523 PMCID: PMC11122418 DOI: 10.3390/jcm13102982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/28/2024] [Accepted: 05/15/2024] [Indexed: 05/26/2024] Open
Abstract
Background/Objectives: Patient care in Cardiac Intensive Care Units (CICU) has evolved but data on patient characteristics and outcomes are sparse. This retrospective observational study aimed to define clinical characteristics and risk factors of CICU patients, their in-hospital and 30-day mortality, and compare it with established risk scores. Methods: Consecutive patients (n = 294, mean age 70 years, 74% males) hospitalized within 15 months were studied; APACHE II, EHMRG, GWTG-HF, and GRACE II were calculated on admission. Results: Most patients were admitted for ACS (48.3%) and acute decompensated heart failure (ADHF) (31.3%). Median duration of hospitalization was 2 days (IQR = 1, 4). In-hospital infection occurred in 20%, 18% needed mechanical ventilation, 10% renal replacement therapy and 4% percutaneous ventricular assist devices (33%, 29%, 20% and 4%, respectively, for ADHF). In-hospital and 30-day mortality was 18% and 11% for all patients (29% and 23%, respectively, for ADHF). Established scores (especially APACHE II) had a good diagnostic accuracy (area under the curve-AUC). In univariate and multivariate analyses in-hospital intubation and infection, history of coronary artery disease, hypotension, uremia and hypoxemia on admission were the most important risk factors. Based on these, a proposed new score showed a diagnostic accuracy of 0.954 (AUC) for in-hospital mortality, outperforming previous scores. Conclusions: Patients are admitted mainly with ACS or ADHF, the latter with worse prognosis. Several patients need advanced support; intubation and infections adversely affect prognosis. Established scores predict mortality satisfactorily, but larger studies are needed to develop CICU-directed scores to identify risk factors, improve prediction, guide treatment and staff training.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Katerina K. Naka
- Second Department of Cardiology, Faculty of Medicine, School of Health Sciences, University of Ioannina and University Hospital of Ioannina, 45110 Ioannina, Greece; (A.R.); (A.B.); (S.C.); (S.A.S.); (C.D.F.); (I.S.); (L.L.); (P.K.); (V.B.); (C.S.K.); (L.K.M.)
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Gao Z, Liu X, Kang Y, Hu P, Zhang X, Yan W, Yan M, Yu P, Zhang Q, Xiao W, Zhang Z. Improving the Prognostic Evaluation Precision of Hospital Outcomes for Heart Failure Using Admission Notes and Clinical Tabular Data: Multimodal Deep Learning Model. J Med Internet Res 2024; 26:e54363. [PMID: 38696251 PMCID: PMC11099809 DOI: 10.2196/54363] [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: 11/07/2023] [Revised: 01/01/2024] [Accepted: 03/19/2024] [Indexed: 05/04/2024] Open
Abstract
BACKGROUND Clinical notes contain contextualized information beyond structured data related to patients' past and current health status. OBJECTIVE This study aimed to design a multimodal deep learning approach to improve the evaluation precision of hospital outcomes for heart failure (HF) using admission clinical notes and easily collected tabular data. METHODS Data for the development and validation of the multimodal model were retrospectively derived from 3 open-access US databases, including the Medical Information Mart for Intensive Care III v1.4 (MIMIC-III) and MIMIC-IV v1.0, collected from a teaching hospital from 2001 to 2019, and the eICU Collaborative Research Database v1.2, collected from 208 hospitals from 2014 to 2015. The study cohorts consisted of all patients with critical HF. The clinical notes, including chief complaint, history of present illness, physical examination, medical history, and admission medication, as well as clinical variables recorded in electronic health records, were analyzed. We developed a deep learning mortality prediction model for in-hospital patients, which underwent complete internal, prospective, and external evaluation. The Integrated Gradients and SHapley Additive exPlanations (SHAP) methods were used to analyze the importance of risk factors. RESULTS The study included 9989 (16.4%) patients in the development set, 2497 (14.1%) patients in the internal validation set, 1896 (18.3%) in the prospective validation set, and 7432 (15%) patients in the external validation set. The area under the receiver operating characteristic curve of the models was 0.838 (95% CI 0.827-0.851), 0.849 (95% CI 0.841-0.856), and 0.767 (95% CI 0.762-0.772), for the internal, prospective, and external validation sets, respectively. The area under the receiver operating characteristic curve of the multimodal model outperformed that of the unimodal models in all test sets, and tabular data contributed to higher discrimination. The medical history and physical examination were more useful than other factors in early assessments. CONCLUSIONS The multimodal deep learning model for combining admission notes and clinical tabular data showed promising efficacy as a potentially novel method in evaluating the risk of mortality in patients with HF, providing more accurate and timely decision support.
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Affiliation(s)
- Zhenyue Gao
- Beijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, China
| | - Xiaoli Liu
- Center for Artificial Intelligence in Medicine, The General Hospital of People's Liberation Army, Beijing, China
| | - Yu Kang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Pan Hu
- Center for Artificial Intelligence in Medicine, The General Hospital of People's Liberation Army, Beijing, China
| | - Xiu Zhang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Yan
- Center for Artificial Intelligence in Medicine, The General Hospital of People's Liberation Army, Beijing, China
| | - Muyang Yan
- Center for Artificial Intelligence in Medicine, The General Hospital of People's Liberation Army, Beijing, China
| | - Pengming Yu
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Qing Zhang
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, China
| | - Wendong Xiao
- Beijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, China
| | - Zhengbo Zhang
- Center for Artificial Intelligence in Medicine, The General Hospital of People's Liberation Army, Beijing, China
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Edmiston EA, Hardin HK, Dolansky MA. What are key characteristics of adults with advanced heart failure discharged from ICU? Nurs Crit Care 2024; 29:493-500. [PMID: 37036244 DOI: 10.1111/nicc.12914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 03/22/2023] [Accepted: 03/24/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND As the number of people with heart failure and treatment complexity increases, many hospitals are implementing Advanced Heart Failure Intensive Care Units (AHFICU). However, little evidence concerning the clinical characteristics of people admitted to AHFICUs exists. Understanding the clinical characteristics of people admitted to the AHFICU will assist nurses with implementing tailored interventions to ensure high-quality care delivery. AIM The purpose of this study was to describe the clinical characteristics of people who are admitted to and discharged from an AHFICU. STUDY DESIGN Baseline data from a longitudinal descriptive study were collected on adults (N = 43) admitted to an AHFICU. Heart failure severity, self-management ability, cognition, sleep quality, and other clinical characteristics were assessed. RESULTS Most study participants were New York Heart Association functional class IV (n = 24) or class III (n = 14), indicating poor functional capacity. Over half had mild cognitive impairment and poor sleep quality was prevalent (92.7%). Participants had adequate levels of heart failure knowledge, but low levels of heart failure self-management decision-making and ability. CONCLUSIONS Interventions to address the unique clinical characteristics of AHFICU patients include sleep hygiene, integration of cognitive, sleep, and self-management assessments into the electronic medical record. Addressing the unique clinical needs of people with heart failure will lead to patient-centered, evidence-based, and safe care. RELEVANCE TO CLINICAL PRACTICE Understanding characteristics of this population addresses this evidence gap and targeted clinical interventions to address unique discharge needs of this population are proposed. Sleep quality education should be done throughout hospitalization on sleep strategies and self-management coaching to facilitate adoption of new sleep routines. Healthcare providers should ensure each patient has care support upon discharge and take cognitive status into consideration during teaching. Addressing self-management readiness should include providing scenarios as part of discharge preparation. Providers must include addressing comorbidities and how they may affect heart failure self-management, such as teaching about sleep apnea device use and encouraging compliance.
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Affiliation(s)
- Elizabeth A Edmiston
- VA Quality Scholars Program, Veterans Affairs Northeast Ohio Health System, Cleveland, Ohio, USA
- Frances Payne Bolton School of Nursing, Case Western Reserve University, Cleveland, Ohio, USA
| | - Heather K Hardin
- School of Nursing, Indiana University School of Nursing, Indianapolis, Indiana, USA
| | - Mary A Dolansky
- VA Quality Scholars Program, Veterans Affairs Northeast Ohio Health System, Cleveland, Ohio, USA
- Frances Payne Bolton School of Nursing, Case Western Reserve University, Cleveland, Ohio, USA
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Donnelly S, Barnett CF, Bohula EA, Chaudhry SP, Chonde MD, Cooper HA, Daniels LB, Dodson MW, Gerber D, Goldfarb MJ, Guo J, Kontos MC, Liu S, Luk AC, Menon V, O'Brien CG, Papolos AI, Pisani BA, Potter BJ, Prasad R, Schnell G, Shah KS, Sridharan L, So DYF, Teuteberg JJ, Tymchak WJ, Zakaria S, Katz JN, Morrow DA, van Diepen S. Interhospital Variation in Admissions Managed With Critical Care Therapies or Invasive Hemodynamic Monitoring in Tertiary Cardiac Intensive Care Units: An Analysis From the Critical Care Cardiology Trials Network Registry. Circ Cardiovasc Qual Outcomes 2024; 17:e010092. [PMID: 38179787 DOI: 10.1161/circoutcomes.123.010092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 11/14/2023] [Indexed: 01/06/2024]
Abstract
BACKGROUND Wide interhospital variations exist in cardiovascular intensive care unit (CICU) admission practices and the use of critical care restricted therapies (CCRx), but little is known about the differences in patient acuity, CCRx utilization, and the associated outcomes within tertiary centers. METHODS The Critical Care Cardiology Trials Network is a multicenter registry of tertiary and academic CICUs in the United States and Canada that captured consecutive admissions in 2-month periods between 2017 and 2022. This analysis included 17 843 admissions across 34 sites and compared interhospital tertiles of CCRx (eg, mechanical ventilation, mechanical circulatory support, continuous renal replacement therapy) utilization and its adjusted association with in-hospital survival using logistic regression. The Pratt index was used to quantify patient-related and institutional factors associated with CCRx variability. RESULTS The median age of the study population was 66 (56-77) years and 37% were female. CCRx was provided to 62.2% (interhospital range of 21.3%-87.1%) of CICU patients. Admissions to CICUs with the highest tertile of CCRx utilization had a greater burden of comorbidities, had more diagnoses of ST-elevation myocardial infarction, cardiac arrest, or cardiogenic shock, and had higher Sequential Organ Failure Assessment scores. The unadjusted in-hospital mortality (median, 12.7%) was 9.6%, 11.1%, and 18.7% in low, intermediate, and high CCRx tertiles, respectively. No clinically meaningful differences in adjusted mortality were observed across tertiles when admissions were stratified by the provision of CCRx. Baseline patient-level variables and institutional differences accounted for 80% and 5.3% of the observed CCRx variability, respectively. CONCLUSIONS In a large registry of tertiary and academic CICUs, there was a >4-fold interhospital variation in the provision of CCRx that was primarily driven by differences in patient acuity compared with institutional differences. No differences were observed in adjusted mortality between low, intermediate, and high CCRx utilization sites.
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Affiliation(s)
- Sarah Donnelly
- Division of General Internal Medicine, Department of Medicine (S.D.), University of Alberta, Edmonton, Canada
| | - Christopher F Barnett
- Division of Cardiology, Department of Medicine, University of California, San Francisco (C.F.B., C.G.O.)
| | - Erin A Bohula
- Levine Cardiac Intensive Care Unit, TIMI Study Group, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (E.A.B., J.G., D.A.M.)
| | - Sunit-Preet Chaudhry
- Division of Cardiology, Ascension St. Vincent Heart Center, Indianapolis, IN (S.-P.C.)
| | - Meshe D Chonde
- Cedars-Sinai Smidt Heart Institute, Los Angeles, CA (M.D.C.)
| | - Howard A Cooper
- Westchester Medical Center and New York Medical College, Valhalla (H.A.C.)
| | - Lori B Daniels
- Division of Cardiovascular Medicine, Department of Medicine, University of California San Diego, La Jolla (L.B.D.)
| | - Mark W Dodson
- Department of Medicine, Intermountain Medical Center, Murray, UT (M.W.D.)
| | - Daniel Gerber
- Division of Cardiovascular Medicine, Department of Medicine, Stanford University, CA (D.G.)
| | - Michael J Goldfarb
- Division of Cardiology, Jewish General Hospital, Montreal, QC, Canada (M.J.G)
| | - Jianping Guo
- Levine Cardiac Intensive Care Unit, TIMI Study Group, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (E.A.B., J.G., D.A.M.)
| | - Michael C Kontos
- Division of Cardiology, Virginia Commonwealth University, Richmond (M.C.K.)
| | - Shuangbo Liu
- Max Rady College of Medicine, St. Boniface Hospital, Winnipeg, MB, Canada (S.L.)
| | - Adriana C Luk
- Peter Munk Cardiac Centre at Toronto General Hospital, Division of Cardiology and Interdepartmental Division of Critical Care Medicine, University of Toronto, ON, Canada (A.C.L.)
| | - Venu Menon
- Cardiovascular Medicine, Cleveland Clinic Foundation, OH (V.M.)
| | - Connor G O'Brien
- Division of Cardiology, Department of Medicine, University of California, San Francisco (C.F.B., C.G.O.)
| | - Alexander I Papolos
- Division of Cardiology, Department of Critical Care, MedStar Washington Hospital Center, DC (A.I.P.)
| | | | - Brian J Potter
- Centre Hospitalier de l'Université de Montréal Research Center and Cardiovascular Center, QC, Canada (B.J.P.)
| | | | - Gregory Schnell
- Department of Cardiac Sciences, Libin Cardiovascular Institute of Alberta, University of Calgary, Canada (G.S.)
| | - Kevin S Shah
- University of Utah Health Sciences Center, Salt Lake City (K.S.S.)
| | | | - Derek Y F So
- University of Ottawa Heart Institute, ON, Canada (D.Y.F.S.)
| | | | - Wayne J Tymchak
- Department of Critical Care Medicine (W.J.T.), University of Alberta, Edmonton, Canada
- Division of Cardiology, Department of Medicine (W.J.T.), University of Alberta, Edmonton, Canada
| | - Sammy Zakaria
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD (S.Z.)
| | | | - David A Morrow
- Levine Cardiac Intensive Care Unit, TIMI Study Group, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA (E.A.B., J.G., D.A.M.)
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van Diepen S, McAlister FA, Chu LM, Youngson E, Kaul P, Kadri SS. Association Between Vaccination Status and Outcomes in Patients Admitted to the ICU With COVID-19. Crit Care Med 2023; 51:1201-1209. [PMID: 37192450 DOI: 10.1097/ccm.0000000000005928] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
OBJECTIVES Although COVID-19 vaccines can reduce the need for intensive care unit admission in COVID-19, their effect on outcomes in critical illness remains unclear. We evaluated outcomes in vaccinated patients admitted to the ICU with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections and the association between vaccination and booster status on clinical outcomes. DESIGN Retrospective cohort. SETTING AND PATIENTS All patients were admitted to an ICU between January 2021 (after vaccination was available) and July 2022 with a diagnosis of COVID-19 based on a SARS-CoV-2 polymerase chain reaction test in Alberta, Canada. INTERVENTIONS None. MEASUREMENT The propensity-matched primary outcome of all-cause in-hospital mortality was compared between vaccinated and unvaccinated patients, and vaccinated patients were stratified by booster dosing. Secondary outcomes were mechanical ventilation (MV) duration ICU length of stay (LOS). MAIN RESULTS The study included 3,293 patients: 743 (22.6%) were fully vaccinated (54.6% with booster), 166 (5.0%) were partially vaccinated, and 2,384 (72.4%) were unvaccinated. Unvaccinated patients were more likely to require invasive MV (78.4% vs 68.2%), vasopressor use (71.1% vs 66.6%), and extracorporeal membrane oxygenation (2.1% vs 0.5%). In a propensity-matched analysis, in-hospital mortality was similar (31.8% vs 34.0%, adjusted odds ratio [OR], 1.25; 95% CI, 0.97-1.61), but median duration MV (7.6 vs 4.7 d; p < 0.001) and ICU LOS (6.6 vs 5.2 d; p < 0.001) were longer in unvaccinated compared to fully vaccinated patients. Among vaccinated patients, greater than or equal to 1 booster had lower in-hospital mortality (25.5% vs 40.9%; adjusted OR, 0.50; 95% CI, 0.0.36-0.68) and duration of MV (3.8 vs 5.6 d; p = 0.025). CONCLUSIONS Nearly one in four patients admitted to the ICU with COVID-19 after widespread COVID-19 vaccine availability represented a vaccine-breakthrough case. Mortality risk remains substantial in vaccinated patients and similar between vaccinated and unvaccinated patients after the onset of critical illness. However, COVID-19 vaccination is associated with reduced ICU resource utilization and booster dosing may increase survivability from COVID-19-related critical illness.
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Affiliation(s)
- Sean van Diepen
- Department of Critical Care Medicine, University of Alberta, Edmonton, AB, Canada
- The Canadian VIGOUR Centre, University of Alberta, Edmonton, AB, Canada
- Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Finlay A McAlister
- The Canadian VIGOUR Centre, University of Alberta, Edmonton, AB, Canada
- The Alberta Strategy for Patient Oriented Research Support Unit, AB, Canada
- Division of General Internal Medicine, Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Luan Manh Chu
- The Alberta Strategy for Patient Oriented Research Support Unit, AB, Canada
- Provincial Research Data Services, Alberta Health Services, Edmonton, AB, Canada
| | - Erik Youngson
- The Alberta Strategy for Patient Oriented Research Support Unit, AB, Canada
- Provincial Research Data Services, Alberta Health Services, Edmonton, AB, Canada
| | - Padma Kaul
- The Canadian VIGOUR Centre, University of Alberta, Edmonton, AB, Canada
- The Alberta Strategy for Patient Oriented Research Support Unit, AB, Canada
| | - Sameer S Kadri
- Critical Care Medicine Department, NIH Clinical Center, Bethesda, MD
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Huang AA, Huang SY. Dendrogram of transparent feature importance machine learning statistics to classify associations for heart failure: A reanalysis of a retrospective cohort study of the Medical Information Mart for Intensive Care III (MIMIC-III) database. PLoS One 2023; 18:e0288819. [PMID: 37471315 PMCID: PMC10358877 DOI: 10.1371/journal.pone.0288819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/04/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND There is a continual push for developing accurate predictors for Intensive Care Unit (ICU) admitted heart failure (HF) patients and in-hospital mortality. OBJECTIVE The study aimed to utilize transparent machine learning and create hierarchical clustering of key predictors based off of model importance statistics gain, cover, and frequency. METHODS Inclusion criteria of complete patient information for in-hospital mortality in the ICU with HF from the MIMIC-III database were randomly divided into a training (n = 941, 80%) and test (n = 235, 20%). A grid search was set to find hyperparameters. Machine Learning with XGBoost were used to predict mortality followed by feature importance with Shapely Additive Explanations (SHAP) and hierarchical clustering of model metrics with a dendrogram and heat map. RESULTS Of the 1,176 heart failure ICU patients that met inclusion criteria for the study, 558 (47.5%) were males. The mean age was 74.05 (SD = 12.85). XGBoost model had an area under the receiver operator curve of 0.662. The highest overall SHAP explanations were urine output, leukocytes, bicarbonate, and platelets. Average urine output was 1899.28 (SD = 1272.36) mL/day with the hospital mortality group having 1345.97 (SD = 1136.58) mL/day and the group without hospital mortality having 1986.91 (SD = 1271.16) mL/day. The average leukocyte count in the cohort was 10.72 (SD = 5.23) cells per microliter. For the hospital mortality group the leukocyte count was 13.47 (SD = 7.42) cells per microliter and for the group without hospital mortality the leukocyte count was 10.28 (SD = 4.66) cells per microliter. The average bicarbonate value was 26.91 (SD = 5.17) mEq/L. Amongst the group with hospital mortality the average bicarbonate value was 24.00 (SD = 5.42) mEq/L. Amongst the group without hospital mortality the average bicarbonate value was 27.37 (SD = 4.98) mEq/L. The average platelet value was 241.52 platelets per microliter. For the group with hospital mortality the average platelet value was 216.21 platelets per microliter. For the group without hospital mortality the average platelet value was 245.47 platelets per microliter. Cluster 1 of the dendrogram grouped the temperature, platelets, urine output, Saturation of partial pressure of Oxygen (SPO2), Leukocyte count, lymphocyte count, bicarbonate, anion gap, respiratory rate, PCO2, BMI, and age as most similar in having the highest aggregate gain, cover, and frequency metrics. CONCLUSION Machine Learning models that incorporate dendrograms and heat maps can offer additional summaries of model statistics in differentiating factors between in patient ICU mortality in heart failure patients.
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Affiliation(s)
- Alexander A. Huang
- Department of MD Education, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America
| | - Samuel Y. Huang
- Department of Internal Medicine, Virginia Commonwealth University School of Medicine, Richmond, VA, United States of America
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Chen Z, Li T, Guo S, Zeng D, Wang K. Machine learning-based in-hospital mortality risk prediction tool for intensive care unit patients with heart failure. Front Cardiovasc Med 2023; 10:1119699. [PMID: 37077747 PMCID: PMC10106627 DOI: 10.3389/fcvm.2023.1119699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/21/2023] [Indexed: 04/05/2023] Open
Abstract
ObjectiveRisk stratification of patients with congestive heart failure (HF) is vital in clinical practice. The aim of this study was to construct a machine learning model to predict the in-hospital all-cause mortality for intensive care unit (ICU) patients with HF.MethodseXtreme Gradient Boosting algorithm (XGBoost) was used to construct a new prediction model (XGBoost model) from the Medical Information Mart for Intensive Care IV database (MIMIC-IV) (training set). The eICU Collaborative Research Database dataset (eICU-CRD) was used for the external validation (test set). The XGBoost model performance was compared with a logistic regression model and an existing model (Get with the guideline-Heart Failure model) for mortality in the test set. Area under the receiver operating characteristic cure and Brier score were employed to evaluate the discrimination and the calibration of the three models. The SHapley Additive exPlanations (SHAP) value was applied to explain XGBoost model and calculate the importance of its features.ResultsThe total of 11,156 and 9,837 patients with congestive HF from the training set and test set, respectively, were included in the study. In-hospital all-cause mortality occurred in 13.3% (1,484/11,156) and 13.4% (1,319/9,837) of patients, respectively. In the training set, of 17 features with the highest predictive value were selected into the models with LASSO regression. Acute Physiology Score III (APS III), age and Sequential Organ Failure Assessment (SOFA) were strongest predictors in SHAP. In the external validation, the XGBoost model performance was superior to that of conventional risk predictive methods, with an area under the curve of 0.771 (95% confidence interval, 0.757–0.784) and a Brier score of 0.100. In the evaluation of clinical effectiveness, the machine learning model brought a positive net benefit in the threshold probability of 0%–90%, prompting evident competitiveness compare to the other two models. This model has been translated into an online calculator which is accessible freely to the public (https://nkuwangkai-app-for-mortality-prediction-app-a8mhkf.streamlit.app).ConclusionThis study developed a valuable machine learning risk stratification tool to accurately assess and stratify the risk of in-hospital all-cause mortality in ICU patients with congestive HF. This model was translated into a web-based calculator which access freely.
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Affiliation(s)
- Zijun Chen
- Department of Cardiology, The Yongchuan Hospital of Chongqing Medical University, Chongqing, China
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Tingming Li
- Department of Cardiology, The Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Sheng Guo
- Department of Cardiology, The People’s Hospital of Rongchang District, Chongqing, China
| | - Deli Zeng
- Department of Cardiology, The Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - Kai Wang
- Department of Cardiology, The Yongchuan Hospital of Chongqing Medical University, Chongqing, China
- Correspondence: Kai Wang
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Peng S, Huang J, Liu X, Deng J, Sun C, Tang J, Chen H, Cao W, Wang W, Duan X, Luo X, Peng S. Interpretable machine learning for 28-day all-cause in-hospital mortality prediction in critically ill patients with heart failure combined with hypertension: A retrospective cohort study based on medical information mart for intensive care database-IV and eICU databases. Front Cardiovasc Med 2022; 9:994359. [PMID: 36312291 PMCID: PMC9597462 DOI: 10.3389/fcvm.2022.994359] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Accepted: 09/15/2022] [Indexed: 11/13/2022] Open
Abstract
Background Heart failure (HF) combined with hypertension is an extremely important cause of in-hospital mortality, especially for the intensive care unit (ICU) patients. However, under intense working pressure, the medical staff are easily overwhelmed by the large number of clinical signals generated in the ICU, which may lead to treatment delay, sub-optimal care, or even wrong clinical decisions. Individual risk stratification is an essential strategy for managing ICU patients with HF combined with hypertension. Artificial intelligence, especially machine learning (ML), can develop superior models to predict the prognosis of these patients. This study aimed to develop a machine learning method to predict the 28-day mortality for ICU patients with HF combined with hypertension. Methods We enrolled all critically ill patients with HF combined with hypertension in the Medical Information Mart for IntensiveCare Database-IV (MIMIC-IV, v.1.4) and the eICU Collaborative Research Database (eICU-CRD) from 2008 to 2019. Subsequently, MIMIC-IV was divided into training cohort and testing cohort in an 8:2 ratio, and eICU-CRD was designated as the external validation cohort. The least absolute shrinkage and selection operator (LASSO) Cox regression with internal tenfold cross-validation was used for data dimension reduction and identifying the most valuable predictive features for 28-day mortality. Based on its accuracy and area under the curve (AUC), the best model in the validation cohort was selected. In addition, we utilized the Shapley Additive Explanations (SHAP) method to highlight the importance of model features, analyze the impact of individual features on model output, and visualize an individual’s Shapley values. Results A total of 3,458 and 6582 patients with HF combined with hypertension in MIMIC-IV and eICU-CRD were included. The patients, including 1,756 males, had a median (Q1, Q3) age of 75 (65, 84) years. After selection, 22 out of a total of 58 clinical parameters were extracted to develop the machine-learning models. Among four constructed models, the Neural Networks (NN) model performed the best predictive performance with an AUC of 0.764 and 0.674 in the test cohort and external validation cohort, respectively. In addition, a simplified model including seven variables was built based on NN, which also had good predictive performance (AUC: 0.741). Feature importance analysis showed that age, mechanical ventilation (MECHVENT), chloride, bun, anion gap, paraplegia, rdw (RDW), hyperlipidemia, peripheral capillary oxygen saturation (SpO2), respiratory rate, cerebrovascular disease, heart rate, white blood cell (WBC), international normalized ratio (INR), mean corpuscular hemoglobin concentration (MCHC), glucose, AIDS, mean corpuscular volume (MCV), N-terminal pro-brain natriuretic peptide (Npro. BNP), calcium, renal replacement therapy (RRT), and partial thromboplastin time (PTT) were the top 22 features of the NN model with the greatest impact. Finally, after hyperparameter optimization, SHAP plots were employed to make the NN-based model interpretable with an analytical description of how the constructed model visualizes the prediction of death. Conclusion We developed a predictive model to predict the 28-day mortality for ICU patients with HF combined with hypertension, which proved superior to the traditional logistic regression analysis. The SHAP method enables machine learning models to be more interpretable, thereby helping clinicians to better understand the reasoning behind the outcome and assess in-hospital outcomes for critically ill patients.
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Affiliation(s)
- Shengxian Peng
- Scientific Research Department, First People’s Hospital of Zigong City, Zigong, China
| | - Jian Huang
- Graduate School, Guangxi University of Chinese Medicine, Nanning, China
| | - Xiaozhu Liu
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiewen Deng
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chenyu Sun
- AMITA Health Saint Joseph Hospital Chicago, Chicago, IL, United States
| | - Juan Tang
- Scientific Research Department, First People’s Hospital of Zigong City, Zigong, China
| | - Huaqiao Chen
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wenzhai Cao
- Department of Cardiology, First People’s Hospital of Zigong City, Zigong, China
| | - Wei Wang
- Department of Cardiology, First People’s Hospital of Zigong City, Zigong, China,Information Department, First People’s Hospital of Zigong City, Zigong, China
| | - Xiangjie Duan
- Department of Infectious Diseases, The First People’s Hospital of Changde City, Changde, China
| | - Xianglin Luo
- Information Department, First People’s Hospital of Zigong City, Zigong, China
| | - Shuang Peng
- General Affairs Section, The People’s Hospital of Tongnan District, Chongqing, China,*Correspondence: Shuang Peng,
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9
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Serum albumin and the short-term mortality in individuals with congestive heart failure in intensive care unit: an analysis of MIMIC. Sci Rep 2022; 12:16251. [PMID: 36171266 PMCID: PMC9519563 DOI: 10.1038/s41598-022-20600-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 09/15/2022] [Indexed: 11/23/2022] Open
Abstract
Decreased albumin levels are common in congestive heart failure (CHF), but little is known about its role in mortality risk in CHF. This study developed a cohort prediction model based on 7121 individuals with heart failure to evaluate the short-term mortality and prognostic role of albumin in patients with CHF. The cohort was from intensive care unit between 2001 and 2012 in a publicly available clinical database in intensive care called MIMIC III. We used a generalized additive model to determine the nonlinear correlation between serum albumin and 14th day, 28th day and 90th day all-cause mortality in patients with heart failure. The results showed that serum albumin is an independent risk factor for 14th, 28th and 90th day all-cause mortality, and has a linear relationship with all-cause mortality in congestive heart failure. Cox regression analysis using restricted cubic spline with albumin as continuous parameter showed that the decrease of albumin level is directly related to the increase of mortality (14th day mortality: hazard ratio [HR], 0.65 [95% CI, 0.58 to 0.73]); 28th day mortality: HR, 0.56 [95% CI, 0.51 to 0.63]; 90th day mortality: HR, 0.52 [95% CI, 0.47 to 0.57]; P for trend < 0.001). The multivariate adjusted association between albumin (as a continuous variable) and all-cause mortality on the 90th days is mixed by ARDS [HR, 0.64, 95% CI (0.47–0.87), P = 0.005]. The all-cause mortality on the 90th day predicted better clinical results with the all-cause mortality on the 14th day.
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10
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van Diepen S, Katz JN. A Call to Move from Point-in-Time towards Comprehensive Dynamic Risk Prediction in Critically Ill Patients with Heart Failure. J Card Fail 2022; 28:1100-1103. [PMID: 35561895 DOI: 10.1016/j.cardfail.2022.04.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 04/27/2022] [Indexed: 10/18/2022]
Affiliation(s)
- Sean van Diepen
- Department of Critical Care Medicine and Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada; Canadian VIGOUR Center, University of Alberta, Edmonton, Alberta, Canada.
| | - Jason N Katz
- Divison of Cardiology, Duke University School of Medicine, Durham, NC, USA
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11
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Bhole R, Sales AM, Lahiri A, Knight L, Womeodu RJ, Townsend AM, Alexandrov AV. Prospective Interventions to Reduce Stroke Care Variation in a Hub-and-Spokes System. J Stroke Cerebrovasc Dis 2021; 31:106218. [PMID: 34922161 DOI: 10.1016/j.jstrokecerebrovasdis.2021.106218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 11/01/2021] [Accepted: 11/02/2021] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Care variation reduction (CVR) is a central objective of quality management to decrease wasted spending. OBJECTIVE To analyze stroke care variation at a hub-and-spokes system and determine interventions to prospectively reduce unwarranted variation. METHODS In this prospective cohort single arm intervention study providers were blinded to pre-specified endpoints. Care variation was measured for DRGs 61-66 and 69 in USD, and severity level by Case Mix Index (CMI) by provider. A multi-disciplinary task force chaired by Vascular Neurologist analyzed data extracted from Crimson, a patient centric data analysis tool, and determined interventions. The primary measure outcome was change in CMI post intervention. RESULTS Annualized baseline care variation was $ 0.7-1.2M (2017) in a drip-and-ship thrombolytic treatment model within the hub-and-spokes system. Pharmacy expenses contributed to 42% of variation followed by laboratory 12%, physical therapy 11%, supplies 11% and imaging 9%. Interventions to achieve CVR were prospectively implemented in 2018 and CVR was measured in January 2019. Based on 2017 CMI of 1.28, the goal of intervention was set to achieve 7% increase to 1.37 with projected increased revenue of $774,144. After implementation of interventions the actual achieved average CMI in 2018 was 1.40 paralleled by improvement in secondary outcomes of length of stay, observed over expected mortality and re-admission. CONCLUSIONS A drip-and-ship stroke model within a single hub-and-spokes healthcare system can achieve substantial reduction in care variation and associated cost along with improvement in patient care indicators.
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Affiliation(s)
- Rohini Bhole
- University of Tennessee Health Science Center, Memphis TN, United States; Methodist University Hospital, Memphis TN, United States.
| | - Angela M Sales
- Methodist University Hospital, Memphis TN, United States
| | - Anupam Lahiri
- Methodist University Hospital, Memphis TN, United States
| | - Lauren Knight
- Methodist University Hospital, Memphis TN, United States
| | - Robin J Womeodu
- University of Tennessee Health Science Center, Memphis TN, United States; Methodist University Hospital, Memphis TN, United States
| | | | - Andrei V Alexandrov
- University of Tennessee Health Science Center, Memphis TN, United States; Methodist University Hospital, Memphis TN, United States
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12
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Breen TJ, Bennett CE, Van Diepen S, Katz J, Anavekar NS, Murphy JG, Bell MR, Barsness GW, Jentzer JC. The Mayo Cardiac Intensive Care Unit Admission Risk Score is Associated with Medical Resource Utilization During Hospitalization. Mayo Clin Proc Innov Qual Outcomes 2021; 5:839-850. [PMID: 34514335 PMCID: PMC8424127 DOI: 10.1016/j.mayocpiqo.2020.12.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Objective To determine whether the Mayo Cardiac Intensive Care Unit (CICU) Admission Risk Score (M-CARS) is associated with CICU resource utilization. Patients and Methods Adult patients admitted to our CICU from 2007 to 2018 were retrospectively reviewed, and M-CARS was calculated from admission data. Groups were compared using Wilcoxon test for continuous variables and χ2 test for categorical variables. Results We included 12,428 patients with a mean age of 67±15 years (37% female patients). The mean M-CARS was 2.1±2.1, including 5890 (47.4%) patients with M-CARS less than 2 and 644 (5.2%) patients with M-CARS greater than 6. Critical care restricted therapies were frequently used, including mechanical ventilation in 28.0%, vasoactive medications in 25.5%, and dialysis in 4.8%. A higher M-CARS was associated with greater use of critical-care therapies and longer CICU and hospital length of stay. The low-risk cohort with M-CARS less than 2 was less likely to require critical-care–restricted therapies, including invasive or noninvasive mechanical ventilation (8.0% vs 46.1%), vasoactive medications (10.1% vs 38.8%), or dialysis (1.0% vs 8.2%), compared with patients with M-CARS greater than or equal to 2 (all P<.001). Conclusion Patients with M-CARS less than 2 infrequently require critical-care resources and have extremely low mortality, suggesting that the M-CARS could be used to facilitate the triage of critically ill cardiac patients.
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Key Words
- ACS, acute coronary syndrome
- APACHE, Acute Physiology and Chronic Health Evaluation
- BUN, blood urea nitrogen
- CA, cardiac arrest
- CCCTN, Critical Care Cardiology Trials Network
- CCI, Charlson Comorbidity Index
- CICU, cardiac intensive care unit
- CRRT, continuous renal replacement therapy
- CS, cardiogenic shock
- CVC, central venous catheter
- ECMO, extracorporeal membrane oxygenation
- HF, heart failure
- IABP, intra-aortic balloon pump
- ICU, intensive care unit
- IMCU, intermediate care unit
- LOS, length of stay
- M-CARS, Mayo Cardiac Intensive Care Unit Admission Risk Score
- PAC, pulmonary arterial catheter
- PCI, percutaneous coronary intervention
- RBC, red blood cell
- RDW, red blood cell distribution width
- SOFA, Sequential Organ Failure Assessment
- VF, ventricular fibrillation
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Affiliation(s)
- Thomas J Breen
- Department of Internal Medicine, Mayo Clinic, Rochester, MN
| | - Courtney E Bennett
- Department of Internal Medicine, Mayo Clinic, Rochester, MN.,Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN.,Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
| | - Sean Van Diepen
- Department of Cardiovascular Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Jason Katz
- Department of Cardiovascular Medicine, Duke University, Durham, NC
| | | | - Joseph G Murphy
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | - Malcolm R Bell
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | | | - Jacob C Jentzer
- Department of Internal Medicine, Mayo Clinic, Rochester, MN.,Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN.,Division of Pulmonary and Critical Care Medicine, Mayo Clinic, Rochester, MN
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13
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Li F, Xin H, Zhang J, Fu M, Zhou J, Lian Z. Prediction model of in-hospital mortality in intensive care unit patients with heart failure: machine learning-based, retrospective analysis of the MIMIC-III database. BMJ Open 2021; 11:e044779. [PMID: 34301649 PMCID: PMC8311359 DOI: 10.1136/bmjopen-2020-044779] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVE The predictors of in-hospital mortality for intensive care units (ICUs)-admitted heart failure (HF) patients remain poorly characterised. We aimed to develop and validate a prediction model for all-cause in-hospital mortality among ICU-admitted HF patients. DESIGN A retrospective cohort study. SETTING AND PARTICIPANTS Data were extracted from the Medical Information Mart for Intensive Care (MIMIC-III) database. Data on 1177 heart failure patients were analysed. METHODS Patients meeting the inclusion criteria were identified from the MIMIC-III database and randomly divided into derivation (n=825, 70%) and a validation (n=352, 30%) group. Independent risk factors for in-hospital mortality were screened using the extreme gradient boosting (XGBoost) and the least absolute shrinkage and selection operator (LASSO) regression models in the derivation sample. Multivariate logistic regression analysis was used to build prediction models in derivation group, and then validated in validation cohort. Discrimination, calibration and clinical usefulness of the predicting model were assessed using the C-index, calibration plot and decision curve analysis. After pairwise comparison, the best performing model was chosen to build a nomogram according to the regression coefficients. RESULTS Among the 1177 admissions, in-hospital mortality was 13.52%. In both groups, the XGBoost, LASSO regression and Get With the Guidelines-Heart Failure (GWTG-HF) risk score models showed acceptable discrimination. The XGBoost and LASSO regression models also showed good calibration. In pairwise comparison, the prediction effectiveness was higher with the XGBoost and LASSO regression models than with the GWTG-HF risk score model (p<0.05). The XGBoost model was chosen as our final model for its more concise and wider net benefit threshold probability range and was presented as the nomogram. CONCLUSIONS Our nomogram enabled good prediction of in-hospital mortality in ICU-admitted HF patients, which may help clinical decision-making for such patients.
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Affiliation(s)
- Fuhai Li
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hui Xin
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jidong Zhang
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Mingqiang Fu
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jingmin Zhou
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhexun Lian
- Department of Cardiology, The Affiliated Hospital of Qingdao University, Qingdao, China
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14
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Ferrer M, García-García C, El Ouaddi N, Rueda F, Serra J, Oliveras T, Labata C, Dégano IR, Montero S, De Diego O, Elosúa R, Lupón J, Bayes-Genis A. Transitioning from a coronary to a critical cardiovascular care unit: trends over the past three decades. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2021; 10:437–444. [PMID: 32672051 DOI: 10.1177/2048872620936038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/31/2020] [Indexed: 11/16/2022]
Abstract
BACKGROUND Coronary care units were established in the 1960s to reduce acute-phase mortality in acute coronary syndrome. In the 21st century, the original coronary care unit concept has evolved into an intensive cardiovascular care unit. The aim of this study was to analyse trend changes in characteristics and mortality of patients admitted to a coronary care unit over the past three decades. METHOD Between February 1989 and December 2017, a total of 18,334 patients was consecutively admitted to the coronary care unit of a university hospital in Barcelona. Data were analysed in five time frames: 1989-1994, 1995-1999, 2000-2004, 2005-2009 and 2010-2017. We analysed demographic profile, diagnoses at admission and trend changes in mortality across periods. RESULTS During the periods, the patients' ages and comorbidities increased. Diagnoses at admission have evolved. Acute coronary syndrome cases declined from the first to the last period (72.6% vs. 62.8%) while heart failure (6.0% vs. 8.6%) and malignant arrhythmias (0.8% vs. 4.0%) increased significantly. Overall, coronary care unit mortality decreased 34% from the first to the last period (6.8% vs. 4.5%, P<0.001). Furthermore, the cause of death has changed, those due to acute coronary syndrome declining (66.7% vs. 45.5%), and death from malignant arrhythmias increasing (1.9% vs. 16.2%) from the first to the last period. CONCLUSIONS Although acute coronary syndrome remained the main diagnosis, heart failure and arrhythmias have increased. Despite the aging and comorbidities, overall mortality in the coronary care unit decreased by 34% in the past three decades. Deaths due to acute coronary syndrome have declined, whereas those due to malignant arrhythmias have increased.
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Affiliation(s)
- Marc Ferrer
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Cosme García-García
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
- CIBER. Enfermedades Cardiovasculares (CIBERCV). Cardiology department. Spain
| | - Nabil El Ouaddi
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Ferran Rueda
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Jordi Serra
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Teresa Oliveras
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Carlos Labata
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Irene R Dégano
- CIBER. Enfermedades Cardiovasculares (CIBERCV). Cardiology department. Spain
- REGICOR Study Group, IMIM (Institut Hospital Del Mar d'Investigacions Mèdiques, Spain
- Faculty of Medicine, University of Vic-Central University of Catalonia (UVic-UCC), Spain
| | - Santiago Montero
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Oriol De Diego
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
| | - Roberto Elosúa
- CIBER. Enfermedades Cardiovasculares (CIBERCV). Cardiology department. Spain
- Faculty of Medicine, University of Vic-Central University of Catalonia (UVic-UCC), Spain
- Cardiovascular Epidemiology and Genetics Group, IMIM, Spain
| | - Josep Lupón
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
- CIBER. Enfermedades Cardiovasculares (CIBERCV). Cardiology department. Spain
- Department of Medicine, Autonomous University of Barcelona, Spain
| | - Antoni Bayes-Genis
- Heart Institute, Hospital Universitari Germans Trias i Pujol, Spain
- CIBER. Enfermedades Cardiovasculares (CIBERCV). Cardiology department. Spain
- Department of Medicine, Autonomous University of Barcelona, Spain
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15
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Raslan IR, Ross HJ, Fowler RA, Scales DC, Stelfox HT, Mak S, Tu JV, Farkouh ME, Stukel TA, Wang X, van Diepen S, Wunsch H, Austin PC, Lee DS. The associations between direct and delayed critical care unit admission with mortality and readmissions among patients with heart failure. Am Heart J 2021; 233:20-38. [PMID: 33166518 DOI: 10.1016/j.ahj.2020.11.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 11/02/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although greater than 20% of patients hospitalized with heart failure (HF) are admitted to a critical care unit, associated outcomes, and costs have not been delineated. We determined 30-day mortality, 30-day readmissions, and hospital costs associated with direct or delayed critical care unit admission. METHODS In a population-based analysis, we compared HF patients who were admitted to critical care directly from the emergency department (direct), after initial ward admission (delayed), or never admitted to critical care during their hospital stay (ward-only). RESULTS Among 178,997 HF patients (median age 80 [IQR 71-86] years, 49.6% men) 36,175 (20.2%) were admitted to critical care during their hospitalization (April 2003 to March 2018). Critical care patients were admitted directly from the emergency department (direct, 81.9%) or after initial ward admission (delayed, 18.1%). Multivariable-adjusted hazard ratios (HR) for all-cause 30-day mortality were: 1.69 for direct (95% confidence interval [CI]; 1.55, 1.84) and 4.92 for delayed (95% CI; 4.26, 5.68) critical care-admitted compared to ward-only patients. Multivariable-adjusted repeated events analysis demonstrated increased risk for all-cause 30-day readmission with both direct (HR 1.04, 95% CI; 1.01, 1.08, P = .013) and delayed critical care unit admissions (HR 1.20, 95% CI; 1.13, 1.28, P < .001). Median 30-day costs were $12,163 for direct admissions, $20,173 for delayed admissions, and $9,575 for ward-only patients (P < .001). CONCLUSIONS While critical care unit admission indicates increased risk of mortality and readmission at 30 days, those who experienced delayed critical care unit admission exhibited the highest risk of death and highest costs of care.
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16
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Karkabi B, Khoury R, Zafrir B, Jaffe R, Adawi S, Lavi I, Schliamser JE, Flugelman MY, Shiran A. Causes of mortality in a department of cardiology over a 15-year period. IJC HEART & VASCULATURE 2020; 32:100692. [PMID: 33365383 PMCID: PMC7749373 DOI: 10.1016/j.ijcha.2020.100692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/26/2020] [Accepted: 11/30/2020] [Indexed: 11/25/2022]
Abstract
Aims Over the last four decades, in-hospital mortality from acute coronary syndromes (ACS) has declined. We characterized the patients who died in our cardiovascular intensive care unit (CICU) over a 15-year period. Based on these data, we described the changing patient population in the CICU. Methods This retrospective study compared characteristics of patients who died in our CICU in 2005–6, 2013–4 and 2019. During these 5 years, 13,931 patients were hospitalized; 251 (1.8%) died. The mean age of the patients who died was 76 years, 144 (57%) were men. ACS was the leading cause of admission (93 patients, 37%), and 145 (58%) patients had a history of heart failure prior to hospitalization. The leading cause of death was cardiogenic shock in 104 (41%) patients, septic shock in 48 (19%) patients, and combined cardiogenic and septic shock in 31 (12%). Patients hospitalized in the later years of the study were significantly older (67.7, 69.0 and 70.5 years, 2005–6, 2013–4 and 2019, respectively, p < 0.02) but their medical characteristics did not differ significantly between the years examined. Conclusions The profile of the patients who died did not change significantly over the 15-year study period. Age of admitted patients was higher in later years of the study. The leading cause of admission was ACS and the leading causes of death were cardiogenic and septic shock. Based on our observations, additional skills should be added to the curriculum of cardiology, including the management of patients with multiorgan failure.
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Affiliation(s)
- Basheer Karkabi
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Razi Khoury
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Barak Zafrir
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Ronen Jaffe
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Salim Adawi
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Idit Lavi
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Jorge E Schliamser
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Moshe Y Flugelman
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
| | - Avinoam Shiran
- Department of Cardiovascular Medicine, Lady Davis Carmel Medical Center, and the Ruth and Bruce Rappaport Faculty of Medicine, Technion, Israel Institute of Technology, Haifa, Israel
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17
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Claeys MJ, Roubille F, Casella G, Zukermann R, Nikolaou N, De Luca L, Gierlotka M, Iakobishvili Z, Thiele H, Koutouzis M, Sionis A, Monteiro S, Beauloye C, Held C, Tint D, Zakke I, Serpytis P, Babic Z, Belohlavev J, Magdy A, Sivagowry Rasalingam M, Daly K, Arroyo D, Vavlukis M, Radovanovic N, Trendafilova E, Marandi T, Hassenger C, Lettino M, Price S, Bonnefoy E. Organization of intensive cardiac care units in Europe: Results of a multinational survey. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2020; 9:993-1001. [DOI: 10.1177/2048872619883997] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Background:
The present survey aims to describe the intensive cardiac care unit organization and admission policies in Europe.
Methods:
A total of 228 hospitals (61% academic) from 27 countries participated in this survey. In addition to the organizational aspects of the intensive cardiac care units, including classification of the intensive cardiac care unit levels, data on the admission diagnoses were gathered from consecutive patients who were admitted during a two-day period. Admission policies were evaluated by comparing illness severity with the intensive cardiac care unit level. Gross national income was used to differentiate high-income countries (n=13) from middle-income countries (n=14).
Results:
A total of 98% of the hospitals had an intensive cardiac care unit: 70% had a level 1 intensive cardiac care unit, 76% had a level 2 intensive cardiac care unit, 51% had a level 3 intensive cardiac care unit, and 60% of the hospitals had more than one intensive cardiac care unit level. High-income countries tended to have more level 3 intensive cardiac care units than middle-income countries (55% versus 41%, p=0.07). A total of 5159 admissions were scored on illness severity: 63% were low severity, 24% were intermediate severity, and 12% were high severity. Patients with low illness severity were predominantly admitted to level 1 intensive cardiac care units, whereas patients with high illness severity were predominantly admitted to level 2 and 3 intensive cardiac care units. A policy mismatch was observed in 12% of the patients; some patients with high illness severity were admitted to level 1 intensive cardiac care units, which occurred more often in middle-income countries, whereas some patients with low illness severity were admitted to level 3 intensive cardiac care units, which occurred more frequently in high-income countries.
Conclusion:
More than one-third of the admitted patients were considered intermediate or high risk. Although patients with higher illness severity were mostly admitted to high-level intensive cardiac care units, an admission policy mismatch was observed in 12% of the patients; this mismatch was partly related to insufficient logistic intensive cardiac care unit capacity.
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Affiliation(s)
- MJ Claeys
- Department of Cardiology, Antwerp University Hospital, Belgium
| | - F Roubille
- Department of Cardiology, University Hospital of Montpellier, France
| | - G Casella
- Department of Cardiology, Ospedale Maggiore, Italy
| | | | - N Nikolaou
- Department of Cardiology, Konstantopouleio General Hospital, Greece
| | - L De Luca
- Department of Cardiology, S. Giovanni Evangelista Hospital, Italy
| | - M Gierlotka
- Department of Cardiology, University of Opole, Poland
| | | | - H Thiele
- Heart Center Leipzig, University Hospital, Germany
| | | | - A Sionis
- Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain
| | | | - C Beauloye
- Cliniques Universitaires Saint Luc, UCLouvain, Belgium
| | - C Held
- Department of Medical Sciences, Uppsala Clinical Research Center, Sweden
| | - D Tint
- ICCO Clinics, Transilvania University, Romania
| | - I Zakke
- Pauls Stradins Clinical University Hospital, Latvia
| | - P Serpytis
- Faculty of Medicine, Vilnius University, Lithuania
| | - Z Babic
- University Hospital Centre, Sisters of Mercy, Croatia
| | - J Belohlavev
- 2nd Department of Medicine, Charles University, Czech Republic
| | - A Magdy
- National Heart Institution, Egypt
| | | | - K Daly
- University College Hospital, Ireland
| | - D Arroyo
- Hôpital Cantonal Fribourg, Switzerland
| | - M Vavlukis
- PHO University Clinic of Cardiology, Macedonia
| | | | | | - T Marandi
- North Estonia Medical Centre, Estonia
- Department of Cardiology, University of Tartu, Estonia
| | - C Hassenger
- Department of Cardiology, Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - M Lettino
- Division of Cardiology, San Gerardo Hospital, Italy
| | - S Price
- Adult Intensive Care Unit, Royal Brompton Hospital, London
| | - E Bonnefoy
- Intensive Cardiac Care Unit, Hospices Civils de Lyon, France
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18
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Woolridge S, Alemayehu W, Kaul P, Fordyce CB, Lawler PR, Lemay M, Jentzer JC, Goldfarb M, Wong GC, Armstrong PW, van Diepen S. National trends in coronary intensive care unit admissions, resource utilization, and outcomes. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2020; 9:923-930. [DOI: 10.1177/2048872619883400] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Emerging evidence suggests that coronary intensive care units are evolving into intensive care environments with an increasing burden of non-cardiovascular illness, but previous studies have been limited to older populations or single center experiences.
Methods:
Canadian national health-care data was used to identify all patients ≥18 years admitted to dedicated coronary intensive care units (2005–2015) and admissions were categorized as primary cardiac or non-cardiac. The outcomes of interest included longitudinal trends in admission diagnoses, critical care therapies, and all-cause in-hospital mortality.
Results:
Among the 373,992 patients admitted to a coronary intensive care unit, minimal changes in the proportion of patients admitted with a primary cardiac (88.2% to 86.9%; p<0.001) and non-cardiac diagnoses (11.8% to 13.1%; p<0.001) were observed. Among cardiac admissions, a temporal increase in the proportion of ST-segment elevation myocardial infarction (19.4% to 24.1%, p<0.001), non-ST-segment elevation myocardial infarction (14.6% to 16.2%, p<0.001), heart failure (7.3% to 8.4%, p<0.001), shock (4.9% to 5.7%, p<0.001), and decline in unstable angina (4.9% to 4.0%, p<0.001) and stable coronary diseases (21.3% to 12.4%, p<0.001) was observed. The proportion of patients requiring critical care therapies (57.8% to 63.5%, p<0.001) including mechanical ventilation (9.6% to 13.1%, p<0.001) increased. In-hospital mortality rates for patients with primary cardiac (4.9% to 4.4%; adjusted odds ratio 0.71, 95% confidence interval 0.63–0.79) and non-cardiac (17.8% to 16.1%; adjusted odds ratio 0.84, 0.73–0.97) declined; results were consistent when stratified by academic vs community hospital, and by the presence of on-site percutaneous coronary intervention.
Conclusion:
In a national dataset we observed a changing case-mix among patients admitted to a coronary intensive care unit, though the proportion of patients with a primary cardiac diagnosis remained stable. There was an increase in clinical acuity highlighted by critical care therapies, but in-hospital mortality rates for both primary cardiac and non-cardiac conditions declined across all hospitals. Our findings confirm the changing coronary intensive care unit case-mix and have implications for future coronary intensive care unit training and staffing.
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Affiliation(s)
| | | | - Padma Kaul
- Division of Cardiology, University of Alberta, Canada
- Canadian Vigour Center, University of Alberta, Canada
| | | | - Patrick R Lawler
- Division of Cardiology, University of Toronto, Canada
- Peter Munk Cardiac Centre, Toronto General Hospital, Canada
| | - Michel Lemay
- Ottawa Heart Institute, University of Ottawa, Canada
| | - Jacob C Jentzer
- Department of Cardiovascular Medicine, Mayo Clinic, USA
- Department of Internal Medicine, Mayo Clinic, USA
| | | | - Graham C Wong
- Division of Cardiology, University of British Columbia, Canada
| | - Paul W Armstrong
- Division of Cardiology, University of Alberta, Canada
- Canadian Vigour Center, University of Alberta, Canada
| | - Sean van Diepen
- Division of Cardiology, University of Alberta, Canada
- Canadian Vigour Center, University of Alberta, Canada
- Department of Critical Care, University of Alberta, Canada
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19
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Claeys MJ, Roubille F, Casella G, Zukermann R, Nikolaou N, De Luca L, Gierlotka M, Iakobishvili Z, Thiele H, Koutouzis M, Sionis A, Monteiro S, Beauloye C, Held C, Tint D, Zakke I, Serpytis P, Babic Z, Belohlavev J, Magdy A, Sivagowry Rasalingam M, Daly K, Arroyo D, Vavlukis M, Radovanovic N, Trendafilova E, Marandi T, Hassenger C, Lettino M, Price S, Bonnefoy E. Organization of intensive cardiac care units in Europe: Results of a multinational survey. EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2020; 9:993-1001. [DOI: mj claeys, f roubille, g casella, r zukermann, n nikolaou, l de luca, m gierlotka, z iakobishvili, h thiele, m koutouzis, a sionis, s monteiro, c beauloye, c held, d tint, i zakke, p serpytis, z babic, j belohlavev, a magdy, m sivagowry rasalingam, k daly, d arroyo, m vavlukis, n radovanovic, e trendafilova, t marandi, c hassenger, m lettino, s price, e bonnefoy, organization of intensive cardiac care units in europe: results of a multinational survey, european heart journal.acute cardiovascular care, volume 9, issue 8, 1 december 2020, pages 993–1001, https:/doi.org/10.1177/2048872619883997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
Background:
The present survey aims to describe the intensive cardiac care unit organization and admission policies in Europe.
Methods:
A total of 228 hospitals (61% academic) from 27 countries participated in this survey. In addition to the organizational aspects of the intensive cardiac care units, including classification of the intensive cardiac care unit levels, data on the admission diagnoses were gathered from consecutive patients who were admitted during a two-day period. Admission policies were evaluated by comparing illness severity with the intensive cardiac care unit level. Gross national income was used to differentiate high-income countries (n=13) from middle-income countries (n=14).
Results:
A total of 98% of the hospitals had an intensive cardiac care unit: 70% had a level 1 intensive cardiac care unit, 76% had a level 2 intensive cardiac care unit, 51% had a level 3 intensive cardiac care unit, and 60% of the hospitals had more than one intensive cardiac care unit level. High-income countries tended to have more level 3 intensive cardiac care units than middle-income countries (55% versus 41%, p=0.07). A total of 5159 admissions were scored on illness severity: 63% were low severity, 24% were intermediate severity, and 12% were high severity. Patients with low illness severity were predominantly admitted to level 1 intensive cardiac care units, whereas patients with high illness severity were predominantly admitted to level 2 and 3 intensive cardiac care units. A policy mismatch was observed in 12% of the patients; some patients with high illness severity were admitted to level 1 intensive cardiac care units, which occurred more often in middle-income countries, whereas some patients with low illness severity were admitted to level 3 intensive cardiac care units, which occurred more frequently in high-income countries.
Conclusion:
More than one-third of the admitted patients were considered intermediate or high risk. Although patients with higher illness severity were mostly admitted to high-level intensive cardiac care units, an admission policy mismatch was observed in 12% of the patients; this mismatch was partly related to insufficient logistic intensive cardiac care unit capacity.
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Affiliation(s)
- MJ Claeys
- Department of Cardiology, Antwerp University Hospital, Belgium
| | - F Roubille
- Department of Cardiology, University Hospital of Montpellier, France
| | - G Casella
- Department of Cardiology, Ospedale Maggiore, Italy
| | | | - N Nikolaou
- Department of Cardiology, Konstantopouleio General Hospital, Greece
| | - L De Luca
- Department of Cardiology, S. Giovanni Evangelista Hospital, Italy
| | - M Gierlotka
- Department of Cardiology, University of Opole, Poland
| | | | - H Thiele
- Heart Center Leipzig, University Hospital, Germany
| | | | - A Sionis
- Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Spain
| | | | - C Beauloye
- Cliniques Universitaires Saint Luc, UCLouvain, Belgium
| | - C Held
- Department of Medical Sciences, Uppsala Clinical Research Center, Sweden
| | - D Tint
- ICCO Clinics, Transilvania University, Romania
| | - I Zakke
- Pauls Stradins Clinical University Hospital, Latvia
| | - P Serpytis
- Faculty of Medicine, Vilnius University, Lithuania
| | - Z Babic
- University Hospital Centre, Sisters of Mercy, Croatia
| | - J Belohlavev
- 2nd Department of Medicine, Charles University, Czech Republic
| | - A Magdy
- National Heart Institution, Egypt
| | | | - K Daly
- University College Hospital, Ireland
| | - D Arroyo
- Hôpital Cantonal Fribourg, Switzerland
| | - M Vavlukis
- PHO University Clinic of Cardiology, Macedonia
| | | | | | - T Marandi
- North Estonia Medical Centre, Estonia
- Department of Cardiology, University of Tartu, Estonia
| | - C Hassenger
- Department of Cardiology, Rigshospitalet, Denmark
- Department of Clinical Medicine, University of Copenhagen, Denmark
| | - M Lettino
- Division of Cardiology, San Gerardo Hospital, Italy
| | - S Price
- Adult Intensive Care Unit, Royal Brompton Hospital, London
| | - E Bonnefoy
- Intensive Cardiac Care Unit, Hospices Civils de Lyon, France
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20
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Burstein B, Bibas L, Rayner-Hartley E, Jentzer JC, van Diepen S, Goldfarb M. National Interhospital Transfer for Patients With Acute Cardiovascular Conditions. CJC Open 2020; 2:539-546. [PMID: 33305214 PMCID: PMC7711006 DOI: 10.1016/j.cjco.2020.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/06/2020] [Indexed: 12/25/2022] Open
Abstract
Background Treatment of ST-elevation myocardial infarction (STEMI) in Canada is protocolized, and timely patient transfer can improve outcomes. Population-based processes of care in Canada for other cardiovascular conditions remain less clear. We aimed to describe the interhospital transfer of Canadian patients with acute cardiovascular disease. Methods We reviewed the Canadian Institute for Health Information Discharge Abstract Database for adult patients hospitalized with acute cardiovascular disease between 2013 and 2018. We compared patient characteristics and clinical outcomes based on transfer status (transferred, nontransferred) and presenting hospital (teaching, large community, medium community, and small community hospitals). The primary outcome of interest was in-hospital mortality. Results There were 476,753 patients with primary acute cardiovascular diagnoses, 48,579 (10.2%) of whom were transferred. Transferred patients were more frequently younger, male, and had fewer comorbidities. The most common diagnoses among transferred patients were non-STEMI (44.2%), STEMI (29.0%), and congestive heart failure (9.4%). Using teaching hospitals as a reference, transfer to large and medium community hospitals was associated with lower hospital mortality (adjusted odds ratio: 0.83, 95% confidence interval: 0.75-0.91 and 0.45, 95% confidence interval: 0.39-0.52, respectively). Conclusions Approximately 10% of patients with acute cardiovascular conditions are transferred to another hospital. Patient transfer may be associated with lower in-hospital mortality, with possible variability based on diagnosis, comorbidities, hospital of origin, and destination hospital. Further investigation into the optimization of care for patients with acute cardiovascular disease, including transfer practices, is warranted as regionalized care models continue to develop.
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Affiliation(s)
- Barry Burstein
- Division of Cardiology, McGill University, Montreal, Québec, Canada
| | - Lior Bibas
- Division of Cardiology, McGill University, Montreal, Québec, Canada.,Division of Critical Care, University of Toronto, Toronto, Ontario, Canada
| | - Erin Rayner-Hartley
- Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jacob C Jentzer
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Sean van Diepen
- Division of Cardiology, University of Alberta, Edmonton, Alberta, Canada
| | - Michael Goldfarb
- Division of Cardiology, Jewish General Hospital, McGill University, Montreal, Québec, Canada
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21
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Sex-Based Considerations in the Evaluation of Chest Pain and Management of Obstructive Coronary Artery Disease. Curr Atheroscler Rep 2020; 22:39. [DOI: 10.1007/s11883-020-00855-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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22
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Mnatzaganian G, Hiller JE, Braitberg G, Kingsley M, Putland M, Bish M, Tori K, Huxley R. Sex disparities in the assessment and outcomes of chest pain presentations in emergency departments. Heart 2019; 106:111-118. [PMID: 31554655 DOI: 10.1136/heartjnl-2019-315667] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Revised: 09/03/2019] [Accepted: 09/11/2019] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE To determine whether sex differences exist in the triage, management and outcomes associated with non-traumatic chest pain presentations in the emergency department (ED). METHODS All adults (≥18 years) with non-traumatic chest pain presentations to three EDs in Melbourne, Australia between 2009 and 2013 were retrospectively analysed. Data sources included routinely collected hospital databases. Triage scoring of the urgency of presentation, time to medical examination, cardiac troponin testing, admission to specialised care units, and in-ED and in-hospital mortality were each modelled using the generalised estimating equations approach. RESULTS Overall 54 138 patients (48.7% women) presented with chest pain, contributing to 76 216 presentations, of which 26 282 (34.5%) were cardiac. In multivariable analyses, compared with men, women were 18% less likely to be allocated an urgency of 'immediate review' or 'within 10 min review' (OR=0.82, 95% CI 0.79 to 0.85), 16% less likely to be examined within the first hour of arrival to the ED by an emergency physician (0.84, 0.81 to 0.87), 20% less likely to have a troponin test performed (0.80, 0.77 to 0.83), 36% less likely to be admitted to a specialised care unit (0.64, 0.61 to 0.68), and 35% (p=0.039) and 36% (p=0.002) more likely to die in the ED and in the hospital, respectively. CONCLUSIONS In the ED, systemic sex bias, to the detriment of women, exists in the early management and treatment of non-traumatic chest pain. Future studies that identify the drivers explaining why women presenting with chest pain are disadvantaged in terms of care, relative to men, are warranted.
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Affiliation(s)
- George Mnatzaganian
- La Trobe Rural Health School, La Trobe University - Bendigo Campus, Bendigo, Victoria, Australia
| | - Janet E Hiller
- Swinburne University of Technology, Hawthorn, Victoria, Australia.,School of Public Health, University of Adelaide, Adelaide, South Australia, Australia
| | - George Braitberg
- Centre for Integrated Critical Care Medicine, Department of Medicine and Radiology, University of Melbourne, Melbourne, Victoria, Australia
| | - Michael Kingsley
- La Trobe Rural Health School, La Trobe University - Bendigo Campus, Bendigo, Victoria, Australia
| | - Mark Putland
- Emergency Medicine, Royal Melbourne Hospital, Melbourne, Victoria, Australia
| | - Melanie Bish
- La Trobe Rural Health School, La Trobe University - Bendigo Campus, Bendigo, Victoria, Australia
| | - Kathleen Tori
- School of Health Sciences, University of Tasmania, Launceston, Tasmania, Australia
| | - Rachel Huxley
- La Trobe University College of Science, Health and Engineering, Melbourne, Victoria, Australia .,The George Institute for Global Health, University of New South Wales, Sydney, New South Wales, Australia
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23
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The Impact of Surgical Volume on Outcomes and Cost in Cleft Repair: A Kids' Inpatient Database Analysis. Ann Plast Surg 2019; 80:S174-S177. [PMID: 29672335 DOI: 10.1097/sap.0000000000001388] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
BACKGROUND Centralization of specialist services, including cleft service delivery, is occurring worldwide with the aim of improving the outcomes. This study examines the relationship between hospital surgical volume in cleft palate repair and outcomes. METHODS A retrospective analysis of the Kids' Inpatient Database was undertaken. Children 3 years or younger undergoing cleft palate repair in 2012 were identified. Hospital volume was categorized by cases per year as low volume (LV; 0-14), intermediate volume (IV; 15-46), or high volume (HV; 47-99); differences in complications, hospital costs, and length of stay (LOS) were determined by hospital volume. RESULTS Data for 2389 children were retrieved: 24.9% (n = 595) were LV, 50.1% (n = 1196) were IV, and 25.0% (n = 596) were HV. High-volume centers were more frequently located in the West (71.9%) compared with LV (19.9%) or IV (24.5%) centers (P < 0.001 for hospital region). Median household income was more commonly highest quartile in HV centers compared with IV or LV centers (32.3% vs 21.7% vs 18.1%, P < 0.001). There was no difference in complications between different volume centers (P = 0.74). Compared with HV centers, there was a significant decrease in mean costs for LV centers ($9682 vs $,378, P < 0.001) but no significant difference in cost for IV centers ($9260 vs $9682, P = 0.103). Both IV and LV centers had a significantly greater LOS when compared with HV centers (1.97 vs 2.10 vs 1.74, P < 0.001). CONCLUSIONS Despite improvement in LOS in HV centers, we did not find a reduction in cost in HV centers. Further research is needed with analysis of outpatient, long-term outcomes to ensure widespread cost-efficiency.
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24
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Jentzer JC, van Diepen S, Barsness GW, Katz JN, Wiley BM, Bennett CE, Mankad SV, Sinak LJ, Best PJ, Herrmann J, Jaffe AS, Murphy JG, Morrow DA, Wright RS, Bell MR, Anavekar NS. Changes in comorbidities, diagnoses, therapies and outcomes in a contemporary cardiac intensive care unit population. Am Heart J 2019; 215:12-19. [PMID: 31260901 DOI: 10.1016/j.ahj.2019.05.012] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 05/26/2019] [Indexed: 11/19/2022]
Abstract
Prior studies have demonstrated that the cardiac intensive care unit (CICU) patient population has evolved over time. We sought to describe the temporal changes in comorbidities, illness severity, diagnoses, procedures and adjusted mortality within our CICU practice in recent years. METHODS We retrospectively reviewed unique CICU admissions at the Mayo Clinic from January 2007 to April 2018. Comorbidities, severity of illness scores, discharge diagnosis codes and CICU procedures and therapies were recorded, and temporal trends were assessed using linear regression and Cochran-Armitage trend tests. Trends in adjusted hospital mortality over time were assessed using multivariable logistic regression. RESULTS We included 12,418 patients with a mean age of 67.6 years (including 37.7% females). Temporal trends in the prevalence of several comorbidities and discharge diagnoses were observed, reflecting an increase in the prevalence of non-coronary cardiovascular diseases, critical care diagnoses, and organ failure (all P ≪ .05). The use of several CICU therapies and procedures increased over time, including mechanical ventilation, invasive lines and vasoactive drugs (all P ≪ .05). A temporal decrease in adjusted hospital mortality was observed among the subgroup of patients with (adjusted OR per year 0.97, 95% CI 0.94-0.99, P = .023) and without (adjusted OR per year 0.91, 95% CI 0.85-0.96, P = .002) a critical care discharge diagnosis. CONCLUSIONS We observed an increasing prevalence of critical care and organ failure diagnoses as well as increased utilization of critical care therapies in this CICU cohort, associated with a decrease in risk-adjusted hospital mortality over time.
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Affiliation(s)
- Jacob C Jentzer
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN; Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Sean van Diepen
- Divisions of Cardiology and Pulmonary and Critical Care Medicine, University of Alberta Hospital, Edmonton, Alberta.
| | - Gregory W Barsness
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Jason N Katz
- Divisions of Cardiology and Pulmonary and Critical Care Medicine, University of North Carolina, Chapel Hill, NC.
| | - Brandon M Wiley
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN; Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Courtney E Bennett
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Sunil V Mankad
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Lawrence J Sinak
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Patricia J Best
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Joerg Herrmann
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Allan S Jaffe
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Joseph G Murphy
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - David A Morrow
- TIMI Study Group, Cardiovascular Division, Brigham and Women's Hospital and Harvard Medical School, Boston, MA.
| | - R Scott Wright
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Malcolm R Bell
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
| | - Nandan S Anavekar
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN.
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25
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Bucholc M, O'Kane M, Mullan C, Ashe S, Maguire L. Primary care use of laboratory tests in Northern Ireland's Western Health and Social Care Trust: a cross-sectional study. BMJ Open 2019; 9:e026647. [PMID: 31230008 PMCID: PMC6596952 DOI: 10.1136/bmjopen-2018-026647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
OBJECTIVES To describe the laboratory test ordering patterns by general practitioners (GPs) in Northern Ireland Western Health and Social Care Trust (WHSCT) and explore demographic and socioeconomic associations with test requesting. DESIGN Cross-sectional study. SETTING WHSCT, Northern Ireland. : Particip ANTS: 55 WHSCT primary care medical practices that remained open throughout the study period 1 April 2011-31 March 2016. OUTCOMES To identify the temporal patterns of laboratory test ordering behaviour for eight commonly requested clinical biochemistry tests/test groups in WHSCT. To analyse the extent of variations in laboratory test requests by GPs and to explore whether these variations can be accounted for by clinical outcomes or geographical, demographic and socioeconomic characteristics. RESULTS The median number of adjusted test request rates over 5 consecutive years of the study period decreased by 45.7% for urine albumin/creatinine ratio (p<0.000001) and 19.4% for lipid profiles (p<0.000001) while a 60.6%, 36.6% and 29.5% increase was observed for HbA1c (p<0.000001), immunoglobulins (p=0.000007) and prostate-specific antigen (PSA) (p=0.0003), respectively. The between-practice variation in test ordering rates increased by 272% for immunoglobulins (p=0.008) and 500% for HbA1c (p=0.0001). No statistically significant relationship between ordering activity and either demographic (age and gender) and socioeconomic factors (deprivation) or Quality and Outcome Framework scores was observed. We found the rural-urban differences in between-practice variability in ordering rates for lipid profiles, thyroid profiles, PSA and immunoglobulins to be statistically significant at the Bonferroni-adjusted significance level p<0.01. CONCLUSIONS We explored potential factors of the interpractice variability in the use of laboratory tests and found that differences in requesting activity appear unrelated to either demographic and socioeconomic characteristics of GP practices or clinical outcome indicators.
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Affiliation(s)
- Magda Bucholc
- School of Computing, Engineering and Intelligent Systems, University of Ulster - Magee Campus, Londonderry, UK
| | - Maurice O'Kane
- Clinical Chemistry, Altnagelvin Area Hospital, Londonderry, UK
| | - Ciaran Mullan
- Western Local Commissioning Group, Health and Social Care Board, Londonderry, UK
| | - Siobhan Ashe
- Clinical Chemistry, Altnagelvin Area Hospital, Londonderry, UK
| | - Liam Maguire
- School of Computing, Engineering and Intelligent Systems, University of Ulster - Magee Campus, Londonderry, UK
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26
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Cook DA, Pankratz VS, Pencille LJ, Dupras DM, Linderbaum JA, Wilkinson JM. Associations Among Practice Variation, Clinician Characteristics, and Care Algorithm Usage: A Multispecialty Vignette Study. Am J Med Qual 2019; 34:596-606. [PMID: 30698036 DOI: 10.1177/1062860618824992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The objective was to quantitatively evaluate clinician characteristics associated with unwarranted practice variation, and how clinical care algorithms influence this variation. Participants (142 physicians, 53 nurse practitioners, and 9 physician assistants in family medicine, internal medicine, and cardiology) described their management of 4 clinical vignettes, first based on their own practice (unguided), then using care algorithms (guided). The authors quantitatively estimated variation in management. Cardiologists demonstrated 17% lower variation in unguided responses than generalists (fold-change 0.83 [95% confidence interval (CI) 0.68, 0.97]), and those who agreed that practice variation can realistically be reduced had 16% lower variation than those who did not (fold-change 0.84 [CI, 0.71, 0.99]). A 17% reduction in variation was observed for guided responses compared with baseline (unguided) responses (fold-change 0.83 [CI, 0.76, 0.90]). Differences were otherwise similar across clinician subgroups and attitudes. Unwarranted practice variation was similar across most clinician subgroups. The authors conclude that care algorithms can reduce variation in management.
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Affiliation(s)
| | - V Shane Pankratz
- University of New Mexico Health Sciences Center, Albuquerque, NM
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27
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Sepehrvand N, Alemayehu W, Kaul P, Pelletier R, Bello AK, Welsh RC, Armstrong PW, Ezekowitz JA. Ambulance use, distance and outcomes in patients with suspected cardiovascular disease: a registry-based geographic information system study. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2018; 9:45-58. [PMID: 29652166 DOI: 10.1177/2048872618769872] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Despite guideline recommendations, the majority of patients with symptoms suggestive of acute coronary syndrome do not use emergency medical services to reach the emergency department (ED). The aim of this study was to investigate the factors associated with EMS utilisation and subsequent patient outcomes. METHODS Using administrative data, all patients who presented to an ED in the metropolitan areas of Edmonton and Calgary in the years of 2007-2013 with main ED diagnosis of acute coronary syndrome, stable angina or chest pain were included. The travel distance was estimated using the geographic information system method to approximate the distance between the ED and patient home. The clinical endpoints were the 7-day and 30-day all-cause events (death, re-hospitalisation and repeat ED visit). RESULTS Of 50,881 patients, 30.5% presented by emergency medical services. Patients with older age, female sex, ED diagnosis of acute coronary syndrome, more comorbidities and lower household income were more likely to use emergency medical services to reach the hospital. Longer travel distance was associated with higher emergency medical services use (odds ratio 1.09, 95% confidence interval 1.09-1.10), but it was not a predictor of clinical events. After adjustment for covariates and inverse propensity score weighting, emergency medical services use was associated with a higher risk of 7-day and 30-day clinical events. CONCLUSION Several demographic and clinical features were associated with higher emergency medical services use including geographical variation. Although longer travel distance was shown to be linked to higher emergency medical services use, it was not an independent predictor of patient outcome. This has implications for the design of emergency medical services systems, triage and early diagnosis and treatment options.
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Affiliation(s)
- Nariman Sepehrvand
- Canadian VIGOUR Centre, University of Alberta, Canada.,Department of Medicine, University of Alberta, Canada
| | | | - Padma Kaul
- Canadian VIGOUR Centre, University of Alberta, Canada.,Department of Medicine, University of Alberta, Canada
| | - Rick Pelletier
- Department of Renewable Resources, University of Alberta, Canada
| | - Aminu K Bello
- Department of Medicine, University of Alberta, Canada
| | - Robert C Welsh
- Canadian VIGOUR Centre, University of Alberta, Canada.,Department of Medicine, University of Alberta, Canada.,Mazankowski Alberta Heart Institute, Canada
| | | | - Justin A Ezekowitz
- Canadian VIGOUR Centre, University of Alberta, Canada.,Department of Medicine, University of Alberta, Canada.,Mazankowski Alberta Heart Institute, Canada
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28
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Practice variation and practice guidelines: Attitudes of generalist and specialist physicians, nurse practitioners, and physician assistants. PLoS One 2018; 13:e0191943. [PMID: 29385203 PMCID: PMC5792011 DOI: 10.1371/journal.pone.0191943] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Accepted: 01/13/2018] [Indexed: 11/21/2022] Open
Abstract
Objective To understand clinicians' beliefs about practice variation and how variation might be reduced. Methods We surveyed board-certified physicians (N = 178), nurse practitioners (N = 60), and physician assistants (N = 12) at an academic medical center and two community clinics, representing family medicine, general internal medicine, and cardiology, from February—April 2016. The Internet-based questionnaire ascertained clinicians' beliefs regarding practice variation, clinical practice guidelines, and costs. Results Respondents agreed that practice variation should be reduced (mean [SD] 4.5 [1.1]; 1 = strongly disagree, 6 = strongly agree), but agreed less strongly (4.1 [1.0]) that it can realistically be reduced. They moderately agreed that variation is justified by situational differences (3.9 [1.2]). They strongly agreed (5.2 [0.8]) that clinicians should help reduce healthcare costs, but agreed less strongly (4.4 [1.1]) that reducing practice variation would reduce costs. Nearly all respondents (234/249 [94%]) currently depend on practice guidelines. Clinicians rated differences in clinician style and experience as most influencing practice variation, and inaccessibility of guidelines as least influential. Time to apply standards, and patient decision aids, were rated most likely to help standardize practice. Nurse practitioners and physicians assistants (vs physicians) and less experienced (vs senior) clinicians rated more favorably several factors that might help to standardize practice. Differences by specialty and academic vs community practice were small. Conclusions Clinicians believe that practice variation should be reduced, but are less certain that this can be achieved. Accessibility of guidelines is not a significant barrier to practice standardization, whereas more time to apply standards is viewed as potentially helpful.
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The Difficult Evolution of Intensive Cardiac Care Units: An Overview of the BLITZ-3 Registry and Other Italian Surveys. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6025470. [PMID: 29362712 PMCID: PMC5736902 DOI: 10.1155/2017/6025470] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 10/03/2017] [Indexed: 12/20/2022]
Abstract
Coronary care units, initially developed to treat acute myocardial infarction, have moved to the care of a broader population of acute cardiac patients and are currently defined as Intensive Cardiac Care Units (ICCUs). However, very limited data are available on such evolution. Since 2008, in Italy, several surveys have been designed to assess ICCUs' activities. The largest and most comprehensive of these, the BLITZ-3 Registry, observed that patients admitted are mainly elderly males and suffer from several comorbidities. Direct admission to ICCUs through the Emergency Medical System was rather rare. Acute coronary syndromes (ACS) account for more than half of the discharge diagnoses. However, numbers of acute heart failure (AHF) admissions are substantial. Interestingly, age, resources availability, and networking have a strong influence on ICCUs' epidemiology and activities. In fact, while patients with ACS concentrate in ICCUs with interventional capabilities, older patients with AHF or non-ACS, non-AHF cardiac diseases prevail in peripheral ICCUs. In conclusion, although ACS is still the core business of ICCUs, aging, comorbidities, increasing numbers of non-ACS, technological improvements, and resources availability have had substantial effects on epidemiology and activities of ICCUs. The Italian surveys confirm these changes and call for a substantial update of ICCUs' organization and competences.
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Ezekowitz JA, O'Meara E, McDonald MA, Abrams H, Chan M, Ducharme A, Giannetti N, Grzeslo A, Hamilton PG, Heckman GA, Howlett JG, Koshman SL, Lepage S, McKelvie RS, Moe GW, Rajda M, Swiggum E, Virani SA, Zieroth S, Al-Hesayen A, Cohen-Solal A, D'Astous M, De S, Estrella-Holder E, Fremes S, Green L, Haddad H, Harkness K, Hernandez AF, Kouz S, LeBlanc MH, Masoudi FA, Ross HJ, Roussin A, Sussex B. 2017 Comprehensive Update of the Canadian Cardiovascular Society Guidelines for the Management of Heart Failure. Can J Cardiol 2017; 33:1342-1433. [PMID: 29111106 DOI: 10.1016/j.cjca.2017.08.022] [Citation(s) in RCA: 443] [Impact Index Per Article: 63.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 08/28/2017] [Accepted: 08/28/2017] [Indexed: 02/06/2023] Open
Abstract
Since the inception of the Canadian Cardiovascular Society heart failure (HF) guidelines in 2006, much has changed in the care for patients with HF. Over the past decade, the HF Guidelines Committee has published regular updates. However, because of the major changes that have occurred, the Guidelines Committee believes that a comprehensive reassessment of the HF management recommendations is presently needed, with a view to producing a full and complete set of updated guidelines. The primary and secondary Canadian Cardiovascular Society HF panel members as well as external experts have reviewed clinically relevant literature to provide guidance for the practicing clinician. The 2017 HF guidelines provide updated guidance on the diagnosis and management (self-care, pharmacologic, nonpharmacologic, device, and referral) that should aid in day-to-day decisions for caring for patients with HF. Among specific issues covered are risk scores, the differences in management for HF with preserved vs reduced ejection fraction, exercise and rehabilitation, implantable devices, revascularization, right ventricular dysfunction, anemia, and iron deficiency, cardiorenal syndrome, sleep apnea, cardiomyopathies, HF in pregnancy, cardio-oncology, and myocarditis. We devoted attention to strategies and treatments to prevent HF, to the organization of HF care, comorbidity management, as well as practical issues around the timing of referral and follow-up care. Recognition and treatment of advanced HF is another important aspect of this update, including how to select advanced therapies as well as end of life considerations. Finally, we acknowledge the remaining gaps in evidence that need to be filled by future research.
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Affiliation(s)
| | - Eileen O'Meara
- Institut de Cardiologie de Montréal, Université de Montréal, Montréal, Québec, Canada
| | | | | | - Michael Chan
- Edmonton Cardiology Consultants, Edmonton, Alberta, Canada
| | - Anique Ducharme
- Institut de Cardiologie de Montréal, Université de Montréal, Montréal, Québec, Canada
| | | | - Adam Grzeslo
- Hamilton Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | | | | | | | - Serge Lepage
- Université de Sherbrooke, Sherbrooke, Québec, Canada
| | | | | | - Miroslaw Rajda
- QEII Health Sciences Centre, Halifax, Nova Scotia, Canada
| | | | - Sean A Virani
- University of British Columbia, Vancouver, British Columbia, Canada
| | | | | | | | | | - Sabe De
- London Health Sciences, Western University, London, Ontario, Canada
| | | | - Stephen Fremes
- Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Lee Green
- University of Alberta, Edmonton, Alberta, Canada
| | - Haissam Haddad
- University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Karen Harkness
- Hamilton Health Sciences, McMaster University, Hamilton, Ontario, Canada
| | | | - Simon Kouz
- Centre Hospitalier Régional de Lanaudière, Joliette, Québec, Canada
| | | | | | | | - Andre Roussin
- Centre hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Bruce Sussex
- Memorial University, St John's, Newfoundland, Canada
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How Medicine Has Changed the End of Life for Patients With Cardiovascular Disease. J Am Coll Cardiol 2017; 70:1276-1289. [DOI: 10.1016/j.jacc.2017.07.735] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 07/13/2017] [Accepted: 07/19/2017] [Indexed: 12/20/2022]
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Raslan IR, Brown P, Westerhout CM, Ezekowitz JA, Hernandez AF, Starling RC, O'Connor C, McAlister FA, Rowe BH, Armstrong PW, van Diepen S. Characterization of hemodynamically stable acute heart failure patients requiring a critical care unit admission: Derivation, validation, and refinement of a risk score. Am Heart J 2017; 188:127-135. [PMID: 28577668 DOI: 10.1016/j.ahj.2017.03.014] [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] [Received: 03/16/2017] [Accepted: 03/22/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Most patients with acute heart failure (AHF) admitted to critical care units (CCUs) are low acuity and do not require CCU-specific therapies, suggesting that they could be managed in a lower-cost ward environment. This study identified the predictors of clinical events and the need for CCU-specific therapies in patients with AHF. METHODS Model derivation was performed using data from patients in the ASCEND-HF trial cohort (n=7,141), and the Acute Heart Failure Emergency Management community-based registry (n=666) was used to externally validate the model and to test the incremental prognostic utility of 4 variables (heart failure etiology, troponin, B-type natriuretic peptide [BNP], ejection fraction) using net reclassification index and integrated discrimination improvement. The primary outcome was an in-hospital composite of the requirement for CCU-specific therapies or clinical events. RESULTS The primary composite outcome occurred in 545 (11.4%) derivation cohort participants (n=4,767) and 7 variables were predictors of the primary composite outcome: body mass index, chronic respiratory disease, respiratory rate, resting dyspnea, hemoglobin, sodium, and blood urea nitrogen (c index=0.633, Hosmer-Lemeshow P=.823). In the validation cohort (n=666), 87 (13.1%) events occurred (c index=0.629, Hosmer-Lemeshow P=.386) and adding ischemic heart failure, troponin, and B-type natriuretic peptide improved model performance (net reclassification index 0.79, 95% CI 0.046-0.512; integrated discrimination improvement 0.014, 95% CI 0.005-0.0238). The final 10-variable clinical prediction model demonstrated modest discrimination (c index=0.702) and good calibration (Hosmer-Lemeshow P=.547). CONCLUSIONS We derived, validated, and improved upon a clinical prediction model in an international trial and a community-based cohort of AHF. The model has modest discrimination; however, these findings deserve further exploration because they may provide a more accurate means of triaging level of care for patients with AHF who need admission.
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Rosychuk RJ, Graham MM, Holroyd BR, Rowe BH. Volume Matters: Improved Outcomes for Patients Presenting to High-Volume Emergency Departments with Atrial Flutter and Fibrillation. PLoS One 2016; 11:e0165894. [PMID: 27814387 PMCID: PMC5096686 DOI: 10.1371/journal.pone.0165894] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 10/19/2016] [Indexed: 11/23/2022] Open
Abstract
Objectives Clinical familiarity plays a role in health outcomes; the relationship between emergency department (ED) volume and outcomes for atrial fibrillation and flutter (AFF) are not clear. We compared ED presentation outcomes for AFF between high (HV) and low volume (LV) EDs in Alberta, Canada. Methods 45,372 AFF presentations for patients aged ≥ 35 years from all 104 EDs in Alberta during 1999 to 2011 using administrative health databases formed a retrospective cohort. EDs were grouped by annual AFF volume: 11 high (>100 presentations) or 93 low (≤100 presentations). Outcomes included hospital admission rate, return to ED for AFF within 30 and 90 days, and death within 30 and 90 days. Analyses included statistical tests and mixed effects modeling. Results Mean age at ED presentation was 69.8 years (52% male). HV ED presentations were associated with lower admissions (adjusted odds ratio [aOR] = 0.68, 95% confidence interval [CI] 0.64, 0.72; p-value [p]<0.001), ED returns at 90 (aOR = 0.81, 95% CI 0.73, 0.90; p<0.001) days, and a higher likelihood of specialist visits at 30 (aOR = 1.81, 95% CI 1.68, 1.94; p<0.001) and 90 (aOR = 1.82, 95% CI 1.76, 2.03; p<0.001) days. For admitted patients, there were fewer returns to HV EDs at 30 (aOR = 0.37, 95% CI 0.15, 0.87; p = 0.02) and 90 (aOR = 0.48, 95% CI 0.26, 0.89; p = 0.02) days after hospital discharge. There was no difference in death between the two groups. Conclusions AFF patients presenting to HV EDs experienced fewer admissions and AFF ED revisit and higher specialist referrals compared to LV EDs.
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Affiliation(s)
- Rhonda J. Rosychuk
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
- Women & Children’s Health Research Institute, Edmonton, Alberta, Canada
- * E-mail:
| | - Michelle M. Graham
- Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Brian R. Holroyd
- Department of Emergency Medicine, University of Alberta, Edmonton, Alberta, Canada
- Alberta Health Services, Edmonton, Alberta, Canada
| | - Brian H. Rowe
- Department of Emergency Medicine, University of Alberta, Edmonton, Alberta, Canada
- Alberta Health Services, Edmonton, Alberta, Canada
- School of Public Health, University of Alberta, Edmonton, Alberta, Canada
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van Diepen S, Lin M, Ezekowitz JA, McAlister FA, Lee DS, Goodman SG, Armstrong PW, Kaul P. Interprovincial Differences in Canadian Coronary Care Unit Resource Use and Outcomes. Can J Cardiol 2016; 33:166-169. [PMID: 27914806 DOI: 10.1016/j.cjca.2016.10.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2016] [Revised: 10/08/2016] [Accepted: 10/09/2016] [Indexed: 11/18/2022] Open
Abstract
International registries have reported a wide variation in coronary care unit (CCU) admission rates for patients hospitalized with acute coronary syndrome (ACS) or heart failure (HF). Little is known about variation in Canadian interprovincial use and outcomes. Canadian Institute of Health Information data were used to identify hospitalized patients admitted to a CCU with a primary diagnosis of ACS or HF between April 1, 2007 and March 31, 2013. We examined interprovincial differences in CCU admission rates, use of CCU restricted therapies in the first 2 days of admission, and the association between CCU admission rate and risk-adjusted in-hospital mortality at the provincial level. The CCU admission rate among 220,759 patients hospitalized with ACS and HF was 33%, and this varied significantly across provinces (interprovincial range [IPR] 17%-50%; P < 0.001). A majority (59%; IPR, 48%-84%; P < 0.001) of patients admitted to the CCU did not receive critical care restricted therapies within 2 days. In-hospital mortality also varied across provinces (10%; IPR, 5%-13%; P < 0.001). Although statistically significant (P < 0.001), the correlation between CCU admission rates and provincial risk-adjusted in-hospital mortality was low (r = -0.30). These findings highlight the need for national CCU admission criteria designed to reduce variability and improve health care resource use and outcomes.
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Affiliation(s)
- Sean van Diepen
- Divisions of Critical Care and Cardiology, University of Alberta, Edmonton, Alberta, Canada; Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada.
| | - Meng Lin
- Alberta SPOR Support Unit, Edmonton, Alberta, Canada
| | - Justin A Ezekowitz
- Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada; Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Finlay A McAlister
- Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada; Division of General Internal Medicine, Department of Medicine, University of Alberta, Edmonton, Canada
| | - Douglas S Lee
- Institute for Clinical Evaluative Sciences and University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Shaun G Goodman
- Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada; Terrence Donnelly Heart Centre, Division of Cardiology, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Paul W Armstrong
- Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada; Division of Cardiology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Padma Kaul
- Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada; Alberta SPOR Support Unit, Edmonton, Alberta, Canada
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van Diepen S, Lin M, Bakal JA, McAlister FA, Kaul P, Katz JN, Fordyce CB, Southern DA, Graham MM, Wilton SB, Newby LK, Granger CB, Ezekowitz JA. Do stable non-ST-segment elevation acute coronary syndromes require admission to coronary care units? Am Heart J 2016; 175:184-92. [PMID: 27179739 DOI: 10.1016/j.ahj.2015.11.020] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 11/24/2015] [Indexed: 01/09/2023]
Abstract
BACKGROUND Clinical practice guidelines recommend admitting patients with stable non-ST-segment elevation acute coronary syndrome (NSTE ACS) to telemetry units, yet up to two-thirds of patients are admitted to higher-acuity critical care units (CCUs). The outcomes of patients with stable NSTE ACS initially admitted to a CCU vs a cardiology ward with telemetry have not been described. METHODS We used population-based data of 7,869 patients hospitalized with NSTE ACS admitted to hospitals in Alberta, Canada, between April 1, 2007, and March 31, 2013. We compared outcomes among patients initially admitted to a CCU (n=5,141) with those admitted to cardiology telemetry wards (n=2,728). RESULTS Patients admitted to cardiology telemetry wards were older (median 69 vs 65years, P<.001) and more likely to be female (37.2% vs 32.1%, P<.001) and have a prior myocardial infarction (14.3% vs 11.5%, P<.001) compared with patients admitted to a CCU. Patients admitted directly to cardiology telemetry wards had similar hospital stays (6.2 vs 5.7days, P=.29) and fewer cardiac procedures (40.3% vs 48.5%, P<.001) compared with patients initially admitted to CCUs. There were no differences in the frequency of in-hospital mortality (1.3% vs 1.2%, adjusted odds ratio [aOR] 1.57, 95% CI 0.98-2.52), cardiac arrest (0.7% vs 0.9%, aOR 1.37, 95% CI 0.94-2.00), 30-day all-cause mortality (1.6% vs 1.5%, aOR 1.50, 95% CI 0.82-2.75), or 30-day all-cause postdischarge readmission (10.6% vs 10.8%, aOR 1.07, 95% CI 0.90-1.28) between cardiology telemetry ward and CCU patients. Results were similar across low-, intermediate-, and high-risk Duke Jeopardy Scores, and in patients with non-ST-segment myocardial infarction or unstable angina. CONCLUSIONS There were no differences in clinical outcomes observed between patients with NSTE ACS initially admitted to a ward or a CCU. These findings suggest that stable NSTE ACS may be managed appropriately on telemetry wards and presents an opportunity to reduce hospital costs and critical care capacity strain.
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Quinn TD, Gabriel RA, Dutton RP, Urman RD. Analysis of Unplanned Postoperative Admissions to the Intensive Care Unit. J Intensive Care Med 2015; 32:436-443. [PMID: 26721638 DOI: 10.1177/0885066615622124] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE To investigate factors associated with unplanned postoperative admissions to the intensive care unit (ICU). METHODS Data from the National Anesthesia Clinical Outcomes Registry (NACOR) were analyzed. We performed univariate and multivariate logistic regression to identify patient- and surgery-specific characteristics associated with unplanned postoperative ICU admission. We also recorded the prevalence of Current Procedural Terminology (CPT) and International Classification of Diseases, ninth revision ( ICD-9) billing codes and outcomes for unplanned postoperative ICU admissions. RESULTS Of 23 341 130 records in the database, 2 910 738 records met our inclusion criteria. A higher American Society of Anesthesiologists physical status (ASA PS) class, case duration greater than 4 hours, and advanced age were associated with a greater likelihood of unplanned ICU admission. Vascular and thoracic surgery patients were more likely to have an unplanned ICU admission. The most common CPT and ICD-9 codes involved repair of femur/hip fracture, bowel resection, and acute postoperative pain. Large community hospitals were more likely than university hospitals to have unplanned postoperative ICU admissions. Patients in the unplanned postoperative ICU admission group were more likely to have experienced intraoperative cardiac arrest, hemodynamic instability, or respiratory failure and were more likely to die in the immediate perioperative period. CONCLUSION Our study is the first diverse analysis of unplanned postoperative ICU admissions in the literature across multiple specialties and practice models. We found an association of advanced age, higher ASA PS class, and duration of procedure with unplanned ICU admission after surgery. Surgical specialties and procedures with the most unplanned ICU admissions could be areas for quality improvement and clinical pathways in the future.
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Affiliation(s)
- Timothy D Quinn
- 1 Department of Anesthesiology, Critical Care and Pain Medicine, Roswell Park Cancer Institute, Jacobs School of Medicine and Biomedical Sciences, State University of New York at Buffalo, Buffalo, NY, USA
| | - Rodney A Gabriel
- 2 Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Richard P Dutton
- 3 American Society of Anesthesiologists, Anesthesia Quality Institute, Schaumburg, IL, USA
| | - Richard D Urman
- 2 Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
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Affiliation(s)
- Sean van Diepen
- Divisions of Critical Care and Cardiology, University of Alberta, Edmonton, Alberta, Canada (S.D.) Canadian Vigour Center, University of Alberta, Edmonton, Alberta, Canada (S.D.)
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