[Atrioventricular nodal reentrant tachycardia as a trigger for atrial fibrillation]

We report the case of a 43 year-old male with a long history of paroxysmal palpitations aborted by vagal manoeuvres, where atrial fibrillation was the only documented arrhythmia. During the electrophysiological study an AV nodal reentrant tachycardia was demonstrated with rapid degeneration into atrial fibrillation. After slow pathway ablation, nodal tachycardia became non-inducible. No palpitations were reported and no arrhythmic event was recorded after a follow-up of 20 months. In selected cases, the electrophysiological study could reveal potentially curable causes of atrial fibrillation.