Sudden unexpected improvement in the atrioventricular conduction. What is the mechanism?

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作者信息

Gupta Anunay, Bhargava Kartikeya, Bhasin Dinkar, Agstam Sourabh, Isser Hermohander Singh

机构信息

Department of Cardiology, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India.

Department of Cardiology, Medanta-The Medicity, Gurugram, India.

出版信息

Indian Pacing Electrophysiol J. 2021 Jul-Aug;21(4):248-250. doi: 10.1016/j.ipej.2021.05.001. Epub 2021 May 8.

DOI:10.1016/j.ipej.2021.05.001

PMID:33971284

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8263326/

Abstract

The 12-lead electrocardiogram (ECG) of a 79-year-old male patient with recurrent pre-syncope showed irregular sinus rhythm with constant PR interval and left bundle branch block (LBBB) with intermittently blocked P waves. The beat following the blocked P wave had a narrower QRS with a shorter PR interval. The phenomenon of bilateral bundle branch block explains the sudden improvement in the atrioventricular conduction.

摘要

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7bb4/8263326/1c812495148b/gr1.jpg

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