TRANSCATHETER RADIOFREQUENCY ABLATION OF VENTRICULAR-TACHYCARDIA FOLLOWING SURGICAL-CORRECTION OF TETRALOGY OF FALLOT

Ventricular arrhythmias occur in up to 13.5% of patients after tetralogy of Fallot repair. We describe a patient with a 30-year history of recurrent ventricular tachycardia, which followed the surgical repair of tetralogy of Fallot. Findings at electrophysiological study were consistent with reentry involving an area of slow conduction in the right ventricular outflow tract. Following the transcatheter application of radiofrequency energy in the light ventricular outflow tract, ventricular tachycardia could no longer be induced and has not occurred spontaneously during follow-up (28 months). Thus, transcatheter radiofrequency ablation is an acceptable therapeutic option in some patients with ventricular tachycardia after the surgical repair of tetralogy of Fallot.