Atrial fibrillation, or AF, is the most common heart rhythm disorder . It is estimated that between 1.5 and 2 percent of the population of industrialized countries suffer from atrial fibrillation. As the risk of suffering from atrial fibrillation increases with the age, aging societies can expect an increase in the morbidity rate among their populations.1 Atrial fibrillation is characterized by an irregular heartbeat. In the beginning, the irregular pulse often appears paroxysmal, meaning it causes sudden attacks. These can last for minutes, hours or even days until the heart rhythm spontaneously normalizes. Over time, these attacks may develop into chronic atrial fibrillation, which requires medical treatment as they no longer end spontaneously. Patients usually get used to the irregular pulse, which causes atrial fibrillation to go unnoticed in some cases. This can have potentially fatal consequences, as atrial fibrillation increases the risk of stroke . In order to prevent a stroke, it is therefore essential to detect even asymptomatic phases of atrial fibrillation. Patients with silent episodes of atrial fibrillation require a special drug therapy for stroke prevention.