An Unusual Cause of AV Dyssynchrony: Dual AV Node Physiology With Retrograde Decremental Conduction.

Raj Dalsania,Andrew Aboyme,James Coromilas,John Kassotis

JACC. Case reports（2023）

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摘要

A 71-year-old male with persistent atrial fibrillation and a dual chamber permanent pacemaker presented complaining of dyspnea on exertion, easy fatiguability, and intermittent cough. A 12-lead electrocardiogram revealed ventricular paced complexes, native QRS complexes, and irregular atrial activity. Herein we present an unusual mechanism of atrioventricular dyssynchrony. ().

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关键词

atrioventricular dyssynchrony,decremental conduction,dual atrioventricular node physiology,fast pathway,retrograde conduction,slow pathway

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