Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study

Abstract Background Prehospital factors play a vital role in out-of-hospital cardiac arrest (OHCA) survivability, and they vary between countries and regions. We investigated the prehospital factors associated with OHCA outcomes in a single metropolitan city in the Republic of Korea. Methods This st...

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Main Authors: Jae Yun Ahn, Hyun Wook Ryoo, Sungbae Moon, Haewon Jung, Jungbae Park, Won Kee Lee, Jong-yeon Kim, Dong Eun Lee, Jung Ho Kim, Sang-Hun Lee
Format: Article
Language:English
Published: BMC 2023-10-01
Series:BMC Emergency Medicine
Subjects:
Online Access:https://doi.org/10.1186/s12873-023-00899-3
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author Jae Yun Ahn
Hyun Wook Ryoo
Sungbae Moon
Haewon Jung
Jungbae Park
Won Kee Lee
Jong-yeon Kim
Dong Eun Lee
Jung Ho Kim
Sang-Hun Lee
author_facet Jae Yun Ahn
Hyun Wook Ryoo
Sungbae Moon
Haewon Jung
Jungbae Park
Won Kee Lee
Jong-yeon Kim
Dong Eun Lee
Jung Ho Kim
Sang-Hun Lee
author_sort Jae Yun Ahn
collection DOAJ
description Abstract Background Prehospital factors play a vital role in out-of-hospital cardiac arrest (OHCA) survivability, and they vary between countries and regions. We investigated the prehospital factors associated with OHCA outcomes in a single metropolitan city in the Republic of Korea. Methods This study included adult medical OHCA patients enrolled prospectively, using data from the citywide OHCA registry for patients registered between 2018 and 2021. The primary outcome was survival to hospital discharge. Multivariable logistic regression analysis was conducted to determine the factors associated with the study population’s clinical outcomes, adjusting for covariates. We performed a sensitivity analysis for clinical outcomes only for patients without prehospital return of spontaneous circulation prior to emergency medical service departure from the scene. Results In multivariable logistic regression analysis, older age (odds ratio [OR] 0.96; 95% confidence interval [CI] 0.95–0.97), endotracheal intubation (adjusted odds ratio [aOR] 0.29; 95% [CIs] 0.17–0.51), supraglottic airway (aOR 0.29; 95% CI 0.17–0.51), prehospital mechanical chest compression device use (OR 0.13; 95% CI 0.08–0.18), and longer scene time interval (OR 0.96; 95% CI 0.93–1.00) were negatively associated with survival. Shockable rhythm (OR 24.54; 95% CI 12.99–42.00), pulseless electrical activity (OR 3.11; 95% CI 1.74–5.67), and witnessed cardiac arrest (OR 1.59; 95% CI 1.07–2.38) were positively associated with survival. In the sensitivity analysis, endotracheal intubation, supraglottic airway, prehospital mechanical chest compression device use, and longer scene time intervals were associated with significantly lower survival to hospital discharge. Conclusions Regional resuscitation protocol should be revised based on the results of this study, and modifiable prehospital factors associated with lower survival of OHCA should be improved.
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spelling doaj.art-5d753cbf4e0b456799a877d27f3680362023-11-26T12:32:07ZengBMCBMC Emergency Medicine1471-227X2023-10-012311910.1186/s12873-023-00899-3Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter studyJae Yun Ahn0Hyun Wook Ryoo1Sungbae Moon2Haewon Jung3Jungbae Park4Won Kee Lee5Jong-yeon Kim6Dong Eun Lee7Jung Ho Kim8Sang-Hun Lee9Department of Emergency Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National UniversityDepartment of Emergency Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National UniversityDepartment of Emergency Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National UniversityDepartment of Emergency Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National UniversityDepartment of Emergency Medicine, Kyungpook National University Hospital, School of Medicine, Kyungpook National UniversityDepartment of Biostatistics, School of Medicine, Medical Research Collaboration Center, Kyungpook National UniversityDepartment of Public Health, Kyungpook National University Hospital, School of Medicine, Kyungpook National UniversityDepartment of Emergency Medicine, Kyungpook National University Chilgok Hospital, School of Medicine, Kyungpook National UniversityDepartment of Emergency Medicine, Yeungnam University College of MedicineDepartment of Emergency Medicine, Keimyung University Dongsan Medical Center, Keimyung University School of MedicineAbstract Background Prehospital factors play a vital role in out-of-hospital cardiac arrest (OHCA) survivability, and they vary between countries and regions. We investigated the prehospital factors associated with OHCA outcomes in a single metropolitan city in the Republic of Korea. Methods This study included adult medical OHCA patients enrolled prospectively, using data from the citywide OHCA registry for patients registered between 2018 and 2021. The primary outcome was survival to hospital discharge. Multivariable logistic regression analysis was conducted to determine the factors associated with the study population’s clinical outcomes, adjusting for covariates. We performed a sensitivity analysis for clinical outcomes only for patients without prehospital return of spontaneous circulation prior to emergency medical service departure from the scene. Results In multivariable logistic regression analysis, older age (odds ratio [OR] 0.96; 95% confidence interval [CI] 0.95–0.97), endotracheal intubation (adjusted odds ratio [aOR] 0.29; 95% [CIs] 0.17–0.51), supraglottic airway (aOR 0.29; 95% CI 0.17–0.51), prehospital mechanical chest compression device use (OR 0.13; 95% CI 0.08–0.18), and longer scene time interval (OR 0.96; 95% CI 0.93–1.00) were negatively associated with survival. Shockable rhythm (OR 24.54; 95% CI 12.99–42.00), pulseless electrical activity (OR 3.11; 95% CI 1.74–5.67), and witnessed cardiac arrest (OR 1.59; 95% CI 1.07–2.38) were positively associated with survival. In the sensitivity analysis, endotracheal intubation, supraglottic airway, prehospital mechanical chest compression device use, and longer scene time intervals were associated with significantly lower survival to hospital discharge. Conclusions Regional resuscitation protocol should be revised based on the results of this study, and modifiable prehospital factors associated with lower survival of OHCA should be improved.https://doi.org/10.1186/s12873-023-00899-3Out-of-hospital cardiac arrest: emergency medical servicesSurvivalAdvanced cardiac life support
spellingShingle Jae Yun Ahn
Hyun Wook Ryoo
Sungbae Moon
Haewon Jung
Jungbae Park
Won Kee Lee
Jong-yeon Kim
Dong Eun Lee
Jung Ho Kim
Sang-Hun Lee
Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study
BMC Emergency Medicine
Out-of-hospital cardiac arrest: emergency medical services
Survival
Advanced cardiac life support
title Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study
title_full Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study
title_fullStr Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study
title_full_unstemmed Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study
title_short Prehospital factors associated with out-of-hospital cardiac arrest outcomes in a metropolitan city: a 4-year multicenter study
title_sort prehospital factors associated with out of hospital cardiac arrest outcomes in a metropolitan city a 4 year multicenter study
topic Out-of-hospital cardiac arrest: emergency medical services
Survival
Advanced cardiac life support
url https://doi.org/10.1186/s12873-023-00899-3
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