Direct current catheter ablation of an accessory pathway in a recipient with refractory reciprocal tachycardia

A recurrent reciprocating tachycardia developed in a 45-year-old man 2 years after heart transplantation. Electrocardiograms of both donor and recipient were normal, without patent preexcitation. An electrophysiologic study showed a left-sided Kent bundle with only retrograde conduction property. Because antiarrhythmic therapy was unsuccessful, direct current catheter ablation was performed. Since this procedure the patient remained asymptomatic without antiarrhythmic therapy.