Out-of-hospital cardiac arrest affects approximately 5,000 people annually in Denmark. Effective treatment by bystanders and prehospital personnel, including early cardiopulmonary resuscitation, use of defibrillators, and medication, is crucial to improving survival after cardiac arrest. The number of cardiac arrest cases prehospital personnel attends varies greatly depending on the region and the prehospital unit in which they work. There is some, albeit uncertain, evidence that the number of cardiac arrest patients treated, influences treatment outcomes and thereby survival. The proposed project will be the first to investigate this relationship in a Danish context.

Purpose

This study aims to examine the association between emergency medical service personnel exposure to out-of-hospital cardiac arrest resuscitation and patient outcomes.

Method

This is a national, observational cohort study based on prospectively collected data from national Danish registries from 2016 to 2023. It is expected that 35,000 patients will be included.

Collaboration

This study is conducted by the Research and Development department, Prehospital Unit, Central Denmark Region, in collaboration with the prehospital research units in the other regions and the Danish Air Ambulance.