A multifaceted intervention to increase bystander CPR rates after out-of-hospital cardiac arrest in France: a stepped-wedge, cluster-randomised, controlled trial

Background

Bystander cardiopulmonary resuscitation (CPR) is a key determinant of survival after out-of-hospital cardiac arrest (OHCA), but rates remain suboptimal worldwide. We evaluated whether a multifaceted intervention targeting emergency dispatch systems and community response could increase bystander-initiated CPR before emergency medical service (EMS) arrival.