[Tachyarrhythmias--when rapid pace is pathological]. / Tachyarrythmien--wenn Geschwindigkeit krank macht.

Tachycardias are classified as supraventricular and ventricular tachycardias. Supraventricular and ventricular tachycardias may occur as a complication of almost any underlying cardiac disease and many extracardiac causes. In addition, patients without any detectable structural heart disease may present with these arrhythmias. In this overview, we discuss the clinical presentations, the pathophysiological mechanisms and the therapeutical strategies in patients with tachyarrhythmias.