Developed in 1991, the American Heart Association "Chain of Survival" is a series of interventions which, when implemented in a timely manner, can greatly increase the potential for survival of Sudden Cardiac Arrest. Since it's inception, the "Chain of Survival" has gone through several iterations. Currently, there two main chains based on whether the arrest occurs outside the hospital or within. The most comprehensive version is the Out-of-Hospital Cardiac Arrest (OHCA) Chain of Survival. The...