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Japanese

Endocardial electrograms obtained through pacemaker endocardial lead Comparison between bipolar and unipolar leads Masayoshi Yokoyama 1 , Yasushi Nishiya 1 , Juro Wada 1 1The Heart Institute of Japan, Tokyo Women's Medical College pp.757-760
Published Date 1979/7/15
DOI https://doi.org/10.11477/mf.1404203401
  • Abstract
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Simultaneous unipolar and bipolar electrograms were recorded and compared from 40 pacemaker patients with bipolar endocardial electrodes. Average bipolar depolarization signal voltage equalled that of unipolar but showed greater variation. The average bipolar R wave height was 7.3 mV, while unipolar R wave height was 6.2 mV. The ST-segment elevation was less in bipolar than in unipolar.

By consistently attenuating the undesirable T waves and ST elevations, the bipolar electrode offered the advantage of a superior signal-to-noise ratio for sensing depolarization.


Copyright © 1979, 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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