Sudden cardiac arrest (SCA) is when the heart suddenly fails to pump blood.  If the individual does not survive, the term sudden cardiac death (SCD) is used. The individual may or may not have a known diagnosis of heart disease. Sudden cardiac arrest can happen at any age and is the leading cause of death in teenage athletes in the United States and accounts for approximately 7 percent of all deaths in the young. Fortunately, SCA and SCD are not common; however, they have a devastating impact on families, care providers and the community.