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Japanese

Hemodynamic effect of left atrium to aorta bypass (LA-AO LVB) in mechanical assistance of the failing heart Naoshi Sato 1,2 , Iwao Fujimasa 1 , Kou Imachi 1 , Norishige Iwai 1 , Hitoshi Miyake 1 , Naoto Takido 1 , Akimasa Kohno 1 , Kazuhiko Atsumi 1 1Institute of Medical Electronics, Faculty of Medicine, University of Tokyo 2Department of Thoracic and Cardiovascular Surgery, Tohoku University pp.997-1002
Published Date 1981/9/15
DOI https://doi.org/10.11477/mf.1404203848
  • Abstract
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Evaluation of hemodynamic effects of the left atrium to aorta bypass (LA-AO LVB) on normal, moderately failing and severely failing hearts ofgoats have been performed. LA-A0 LVB on normal hearts resulted in no significant changes of left ventricular pressure (LVP), mean aortic pressure (mAoP), total output (TO) and DPTI/ TTI ratio. LA-AO LVB on moderately failing hearts resulted in decrease of LVP by 35.8%, increase of mAoP by 19.8% and increase of TOby 44.6%. In severely failing hearts LA-AO LVB resulted in paradoxical increase of LVP by 14. 8% increase of mAoP by 88.8% and increse of TO by 272.5%, thus, demonstrating that the LA-AO LVB has benificial effect with its volume and pressure unloading as well, in failing groups.


Copyright © 1981, 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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