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Infra-Hisian Conduction Disturbance and Alternating Left Anterior/Posterior Fascicular Block.
Abstract
We present an unusual case of alternating left anterior and left posterior fascicular block. Given the known risk for progression to complete atrioventricular block with alternating right bundle and left bundle branch block, we performed an electrophysiological study. Findings were consistent with infra-Hisian disease, and the patient underwent pacemaker implantation.
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