Do differences in emergency medical services (EMS) response time to an arrest account for the survival differences between EMS-witnessed and bystander-witnessed out of hospital cardiac arrest?

ABSTRACT:

Introduction

Out-of-hospital cardiac arrests (OHCA) witnessed by Emergency Medical Services (EMS) are reported to have more favourable survival than bystander-witnessed arrests, even after adjusting for patient and arrest factors known to be associated with increased OHCA survival. This study aims to determine whether the survival advantage in EMS-witnessed arrests can be attributed to differences in the EMS response time to the arrest.

Methods

Using registry data we conducted a retrospective, population-based cohort study of bystander- and EMS-witnessed OHCAs of medical aetiology who received an EMS resuscitation attempt in Western Australia between 2018-2021. EMS response time to arrest was assumed to be zero for EMS-witnessed arrests. Multivariable logistic regression was

SUBMITTER: Majewski D 

PROVIDER: S-EPMC11259960 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature