Out-of-hospital cardiac arrest (OHCA) is a time-sensitive, life-threatening emergency that occurs millions of times every year. Data from countries around the world with emergency medical services (EMS) in place suggest a global average of 82.1 EMS-attended OHCAs per 100,000 people per annum. Survival after OHA remains modest despite standardized dispatch protocols in EMS systems, increased community training, and the introduction of post-resuscitation care. Ten percent (range, 6%–22%) of people who experience OHCA can expect to survive with a favorable neurological […]