Seasonal variation in bystander efforts and survival after out-of-hospital cardiac arrest.

ABSTRACT:

Background

This study investigated the hypothesis that out-of-hospital cardiac arrest (OHCA) incidence, public automated external defibrillator (PAD) utilization and outcome vary by season, with increased incidence and lower survival rates expected in winter. The aim was to provide insights that might optimize resuscitation efforts throughout the year.

Methods

Cases of OHCA from 2016 to 2021 were included from the Danish Cardiac Arrest Registry. Cases were stratified by season and month and analysed for frequency, witnessed status, location, bystander cardiopulmonary resuscitation (CPR), bystander PAD defibrillation and 30-day survival. The primary outcome was incidence of OHCA and variability in utilization of PADs by season. Secondary outcome was 30-day survival rates. Cat

SUBMITTER: Hald NS 

PROVIDER: S-EPMC11995780 | biostudies-literature | 2025 May

REPOSITORIES: biostudies-literature