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Retrograde concealed conduction as a manifestation of unidirectional block in complete A-V block Shigenobu Bando 1 , Ryosaku Shimizu 1 , Hisatomi Matsuoka 1 , Takashi Hiraga 1 , Hidemi Shinomiya 1 , Yoshiaki Yokoi 1 , Hiroyoshi Mori 1 1The Second Department of Internal Medicine, Tokushima University pp.385-389
Published Date 1985/3/15
DOI https://doi.org/10.11477/mf.1404204631
  • Abstract
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Retrograde concealed conduction was investigated electrophysiologically in 24 cases with complete A-V block who did not show manifest evidence of V-A conduction.

When a sinus P wave occurred soon after the ven-tricular complex, the prolongation of A-H interval was observed in 4 of 24 cases (16.7%). This phe-nomenon was considered to be due to retrograde concealed conduction of ventricular impulse to the A-V node and a manifestation of unidirectional block in A-V conduction system.

We postulated that the incidence of the unidirec-tional block in complete A-V block might be much higher than that reported previously.


Copyright © 1985, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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