LDIOVENTRICULAR TACHYCARDIA ARISING IN THE POSTERIOR AND THE ANTERIOR DIVISIONS OF THE LEFT BUNDLE BRANCH

Abstract

In a patient with atrial fibrillation. and digitalis intoxication, a pattern of RBBB with LAH and that of RBBB with LPH were observed in the presence of advanced A-V block. The mechanism of these conduction disturbance is considered on the basis of idioventricular rhythm arising from the posterior and the anterior division of the LBB.