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Selective depressant effects of procainamide on the depolarized cells Hideaki Sada 1 , Michio Kojima 1 , Shigeko Harada 1 , Takashi Ban 1 1Department of Pharmacology, School of Medicine, Yamaguchi University pp.1409-1413
Published Date 1980/12/15
DOI https://doi.org/10.11477/mf.1404203689
  • Abstract
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 The influences of altering external potassium concentrations, [K]0, on the electrophysiologic effects of procainamide were investigated by means of microelectrode technique in guinea-pig myocardium.

 Suppression of the maximum rate of rise of action potential (Vmax), prolongation of the re-fractory period and rate-dependent reduction of Vmax, induced by 100mg/l of procainamide were all enhanced with raising [K]0 from 2.7 to 10.0 mM.


Copyright © 1980, 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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