Surgical division of an accessory atrioventricular connection in the posterior septal region following ventricular fibrillation in the Wolff-Parkinson-White syndrome.

A young man presented with atrial fibrillation and a rapid ventricular response which degenerated into ventricular fibrillation. Electrophysiological study demonstrated an accessory atrioventricular connection in the posterior septal region. This was sectioned to prevent recurrence of his arrhythmia. Post-operative electrophysiological study demonstrated that the surgical section was successful.