Low Energy Catheter Ablation of a Posteroseptal Accessory Pathway Associated with a Diverticulum of the Coronary Sinus

Abstract
A 23‐year‐old man was resuscitated from ventricular fibrillation and subsequently shown to have the Wolff‐Parkinson‐White syndrome. Electrophyslological study demonstrated a posteroseptal accessory pathway, and coronary sinus angiography demonstrated that this was associated with a diverticulum of the coronary sinus. Catheter ablation was performed using a new low energy system. Five shocks were delivered within the coronary sinus diverticulum, with a cumulative energy of 39 joules (J). Accessory pathway conduction was blocked successfully, and there were no complications.