Sudden cardiac death (SCD) is the medical term for an unexpected death caused by loss of heart function. Death occurs within an hour after the initial onset of symptoms. Every year, 50–100 sudden cardiac deaths occur per 1,000 deaths in Europe and North America.1 In Germany, around 65,000 people die of sudden cardiac death every year, which therefore accounts for 20 percent of all cardiovascular deaths.2 Athletes are at particularly high risk. They are two to four times more likely to experience sudden cardiac death (SCD) than the overall population.3 It is assumed, however, that sports are not responsible for the higher death rate. More likely underlying undetected heart diseases cause the sudden cardiac death in athletes by predisposing the heart to acute cardiac arrest or ventricular fibrillation when it is overstrained during exercise.