Sudden Cardiac Arrest (SCA) occurs when the heart stops beating, abruptly and without warning. If this happens, blood stops flowing to the brain and other vital organs. In addition, if the heartbeat is not restored with an electrical shock immediately, death follows within minutes. SCA accounts for more than 350,000 deaths in the U.S. each year.SCA accounts for more than 350,000 deaths in the U.S. each year and is one of the leading causes of death in the United States each year. In fact, SCA claims one life every 90 seconds, taking more lives each year than breast cancer, lung cancer or AIDS. Unfortunately, 95 percent of people who experience SCA die as a result, mainly because treatment within minutes is not accessible.