Out - of - hospital
cardiac arrest is a major public health
issue accounting for approximately 200000 deaths per year in the United States.1 Despite more than 2 decades of evidence demonstrating
significant benefits from early cardiopulmonary resuscitation (CPR) and defibrillation, wide variation in CPR training, bystander and first - responder intervention, and survival after out - of - hospital
cardiac arrest remains.2 - 5