[Vagal atrial arrhythmia syndrome].

A case of paroxysmal atrial fibrillation with a vagal origin is presented. The vagal atrial arrhythmia syndrome is characterized by episodes of atrial fibrillation of flutter that most often occur postprandially or during the night. Episodes are precipitated by mild bradycardia. They should be classified as "lone" atrial fibrillation, and do not tend to become chronic. A rational medical approach is proposed.