RADIOFREQUENCY CATHETER ABLATION OF RIGHT-VENTRICULAR OUTFLOW TRACT TACHYCARDIA LATE AFTER COMPLETE REPAIR OF TETRALOGY OF FALLOT USING THEPACE MAPPING TECHNIQUE

While surgical repair of tetralogy of Fallot has improved the long-ter m outlook for this patient population, sudden death late after repair remains a problem. Ventricular tachycardia (VT) originating in the rig ht ventricular outflow tract (RVOT) is a well described, clinically im portant finding following surgical repair of tetralogy and a number of investigators suggest that this VT plays a critical role in the etiol ogy of sudden death. We report two patients with RVOT VT late after re pair of tetralogy who underwent successful radiofrequency ablation of their tachycardia.