[Chronic supraventricular reverse tachycardia in retrograde conduction through accessory pathway].

A 22-year-old patient with chronic supraventricular tachycardia is presented. This tachycardia was investigated by means of His-bundle electrography with atrial and ventricular stimulation. A circus movement with antegrad conduction through the AV node and retograde conduction through an accessory pathway was found as the underlaying mechanism of the tachycardia.