 Sudden cardiac death SCD is a catastrophic event and most commonly results from acute ventricular tachyarrhythmias abnormal and lethal heart rhythms. It is often triggered by acute coronary events, which may occur in persons without known cardiac disease or in association with structural heart disease. Advanced therapies such as thrombolytic agents, percutaneous coronary intervention, and implantable cardioverter defibrillators are of no value to thousands of victims who do not survive. Many instances of SCD cannot be predicted and any intervention directed toward the general population would have to be applied to an estimated 1000 persons for every 1 person in whom SCD might be prevented. Thus, it would be reasonable to develop new treatment strategies to improve response to resuscitative efforts. 