This is a pragmatic, two-arm, open-label, prospective stepped-wedge cluster quasi randomized control trial (SW-CRCT) looking to evaluate early intramuscular (IM) epinephrine in the management of pediatric out-of-hospital cardiac arrest (POHCA).
Inclusion Criteria: * Children aged 1 day to and including 17 years experiencing an out-of-hospital cardiac arrest (OHCA) * Must be receiving at least 1 minute of CPR by trained first responders (police, fire, or paramedic services) Exclusion Criteria: \- Children who experience OHCA due to an obvious traumatic event.