Demonstration of Reentry Within the Right Bundle Branch in Man

Abstract
Reentry within the right bundle branch which, to our knowledge is a hitherto undescribed mechanism of His‐Purkinje reentry in man, was elicited during programmed right ventricular stimulation. Electrophysiologic analysis excluded atrioventricular nodal reentry. His bundle reentry, reentry involving both bundle branches, and intraventricular micro‐reentry.