Radiofrequency catheter ablation as a primary therapy for treatment of ventricular tachycardia in a patient after repair of tetralogy of Fallot.

A 20-year-old man with previous surgical repair of tetralogy of Fallot was admitted with hemodynamically significant ventricular tachycardia that was terminated with cardioversion. He was found at electrophysiological study to have easily inducible ventricular tachycardia that was mapped to the right ventricular outflow tract. Radiofrequency catheter ablation of the ventricular tachycardia focus rendered the patient's arrhythmia noninducible. This case represents a successful radiofrequency catheter ablation of a ventricular tachycardia focus associated with tetralogy of Fallot repair.