Bystander CPR is a critical link in the chain of survival. It has been shown to more than double a victim’s chance of surviving an out-of-hospital cardiac arrest (OHCA). Using an automated external defibrillator (AED) in addition to performing bystander CPR further improves the chances of survival.2 Yet, both bystander CPR and AEDs are not provided in a majority of OHCA events.
Because time is so critical in cardiac arrest, immediate bystander action (calling 9-1-1, performing CPR, and early defibrillation) is the cornerstone of maximizing the effectiveness of subsequent EMS and hospital interventions and ultimately survival. This is especially true in rural and congested urban areas with prolonged response times.