Importance of Recording the Right Bundle Branch Deflection in the Diagnosis of His‐Purkinje Reentrant Tachycardia

120 consecutive patients with inducible sustained ventricular tachycardia, of which 8 had reentry within the His-Purkinje System and 2 required recording of the right bundle branch potential to elucidate the tachycardia circuits.

Recording of the right bundle branch potential during electrophysiology study

Elucidation of tachycardia circuits (diagnosis of His-Purkinje reentrant tachycardia)