Journal List > Korean Circ J > v.2(2) > 1072535

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Shim, Lee, and Cha: Retrograde Conduction in Complete Heart Block
Case Report
Korean Circulation Journal

Korean Circulation Journal 1972; 2(2): 53-55.

Published online: 31 December 1972

DOI: https://doi.org/10.4070/kcj.1972.2.2.53

Retrograde Conduction in Complete Heart Block

Young-Hak Shim, M.D., Woong-Ku Lee, M.D., Hong-Do Cha, M.D.

Copyright © 1972 The Korean Society of Circulation

(open-access):

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A 45 year old man with a history of syncopal attacks of 3 days' duration showed complete heart block with occasional retrograde P waves following QRS complexes in the electrocardiogram.
The site of A-V block seemed to be below A-V node judging from the QRS complexes when occasional capture occured. This may be a case of complete heart block progressing from right bundle branch block plus left posterior hemiblock.
There was a rapid improvement of conduction with sublingual isoproterenol in a few days, EKG's showing normal A-V conduction and QRS complexes on discharge.
The mechanism of the retrograde conduction in the presence of complete heart block is discussed with a review of literature.

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