Sam A Warren1, David K Prince2, Ella Huszti3, Tom D Rea4, Annette L Fitzpatrick5, Douglas L Andrusiek6, Steve Darling7, Laurie J Morrison8, Gary M Vilke9, Graham Nichol10. 1. University of Washington, Harborview Center for Prehospital Emergency Care, Seattle, WA, United States; University of Washington, Department of Medicine, Seattle, WA, United States. Electronic address: sawarren@uw.edu. 2. University of Washington, Department of Biostatistics, Seattle, WA, United States; University of Washington, Clinical Trial Center, Department of Biostatistics, Seattle, WA, United States. 3. University of Washington, Harborview Center for Prehospital Emergency Care, Seattle, WA, United States; University of Washington, Department of Medicine, Seattle, WA, United States. 4. University of Washington, Department of Medicine, Seattle, WA, United States. 5. University of Washington, Department of Epidemiology, Seattle, WA, United States; University of Washington, Collaborative Health Studies Coordinating Center, Seattle, WA, United States; University of Washington, Department of Global Health, Seattle, WA, United States. 6. Emergency and Health Services Commission, British Columbia, Canada. 7. York Regional Emergency Medical Services, Sharon, Ontario, Canada. 8. Rescu, Keenan Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada. 9. University of California San Diego Health System, United States. 10. University of Washington, Harborview Center for Prehospital Emergency Care, Seattle, WA, United States; University of Washington, Department of Medicine, Seattle, WA, United States; University of Washington, Clinical Trial Center, Department of Biostatistics, Seattle, WA, United States.
Abstract
BACKGROUND AND AIM: The large regional variation in survival after treatment of out-of-hospital cardiac arrest (OHCA) is incompletely explained. Communities respond to OHCA with differing number of emergency medical services (EMS) personnel who respond to the scene. The effect of different numbers of EMS personnel on-scene upon outcomes is unclear. We sought to evaluate the association between number of EMS personnel on-scene and survival after OHCA. METHODS: We performed a retrospective review of prospectively collected data on 16,122 EMS-treated OHCA events from December 1, 2005 to May 31, 2007 from a combined population over 21 million people residing in an area of over 33,000 square miles in Canada and the United States. Number of EMS personnel on-scene was defined as the number of EMS personnel who responded to the scene of OHCA within 15 min after 9-1-1 call receipt and prior to patient death or transport away from the scene. Associations with survival to hospital discharge were assessed by using generalized estimating equations to construct multivariable logistic regression models. RESULTS: Compared to a reference number of EMS personnel on-scene of 5 or 6, 7 or 8 EMS personnel on-scene was associated with a higher rate of survival to hospital discharge, adjusted odds ratio [OR], 1.35 (95% CI: 1.05, 1.73). There was no significant difference in survival between 5 or 6 personnel on-scene versus fewer. CONCLUSION: More EMS personnel on-scene within 15 min of 9-1-1 call was associated with improved survival of out-of-hospital cardiac arrest. It is unlikely that this finding was mediated solely by earlier CPR or earlier defibrillation.
BACKGROUND AND AIM: The large regional variation in survival after treatment of out-of-hospital cardiac arrest (OHCA) is incompletely explained. Communities respond to OHCA with differing number of emergency medical services (EMS) personnel who respond to the scene. The effect of different numbers of EMS personnel on-scene upon outcomes is unclear. We sought to evaluate the association between number of EMS personnel on-scene and survival after OHCA. METHODS: We performed a retrospective review of prospectively collected data on 16,122 EMS-treated OHCA events from December 1, 2005 to May 31, 2007 from a combined population over 21 million people residing in an area of over 33,000 square miles in Canada and the United States. Number of EMS personnel on-scene was defined as the number of EMS personnel who responded to the scene of OHCA within 15 min after 9-1-1 call receipt and prior to patientdeath or transport away from the scene. Associations with survival to hospital discharge were assessed by using generalized estimating equations to construct multivariable logistic regression models. RESULTS: Compared to a reference number of EMS personnel on-scene of 5 or 6, 7 or 8 EMS personnel on-scene was associated with a higher rate of survival to hospital discharge, adjusted odds ratio [OR], 1.35 (95% CI: 1.05, 1.73). There was no significant difference in survival between 5 or 6 personnel on-scene versus fewer. CONCLUSION: More EMS personnel on-scene within 15 min of 9-1-1 call was associated with improved survival of out-of-hospital cardiac arrest. It is unlikely that this finding was mediated solely by earlier CPR or earlier defibrillation.
Authors: Masashi Okubo; Robert H Schmicker; David J Wallace; Ahamed H Idris; Graham Nichol; Michael A Austin; Brian Grunau; Lynn K Wittwer; Neal Richmond; Laurie J Morrison; Michael C Kurz; Sheldon Cheskes; Peter J Kudenchuk; Dana M Zive; Tom P Aufderheide; Henry E Wang; Heather Herren; Christian Vaillancourt; Daniel P Davis; Gary M Vilke; Frank X Scheuermeyer; Myron L Weisfeldt; Jonathan Elmer; Riccardo Colella; Clifton W Callaway Journal: JAMA Cardiol Date: 2018-10-01 Impact factor: 14.676
Authors: Kichan Han; You Hwan Jo; Yu Jin Kim; Seung Min Park; Dong Keon Lee; Dong Won Kim; Kui Ja Lee; Hyo Ju Choi; Dong-Hyun Jang Journal: Emerg Med Int Date: 2022-03-17 Impact factor: 1.112
Authors: Pin-Hui Fang; Yu-Yuan Lin; Chien-Hsin Lu; Ching-Chi Lee; Chih-Hao Lin Journal: Int J Environ Res Public Health Date: 2020-03-16 Impact factor: 3.390