Right ventricular lead induced ventricular arrhythmia-A rare complication of cardiac resynchronization therapy.

This unusual case shows a rare phenomenon of late proarrhythmic effect due to the RV lead pacing-a new finding reported only in a few publications. Here we present our approach to CRT programming that suppressed the clinical arrhythmia without the need of catheter ablation and achieving the high biventricular pacing capture rate along with optimal hemodynamic CRT-D performance.