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Effect of Heart Rate on Cardiac Hemodynamics in Patients with Aortic Regurgitation Takashi Nakamura 1 , Shoso Nezuo 1 , Toshitami Sawayama 1 , Kouichi Hasegawa 1 , Yousuke Kawahara 1 , Shinichiro Tadaoka 1 , Shozo Inoue 1 , Keizi Tamura 1 , Junzi Tanaka 1 1Division of Cardiology, Department of Medicine, Kawasaki Medical School Keyword: 大動脈弁閉鎖不全 , 心拍数 , 心血行動態 pp.169-174
Published Date 1992/2/15
DOI https://doi.org/10.11477/mf.1404900427
  • Abstract
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We evaluated the effects of heart rate on cardiac hemodynamics in 10 patients with aortic regurgitation (AR, mean regurgitat fraction: 64.3%). Cardiac cath-eterization was performed in all patients, and the hemodynamic parameters were obtained by increasing heart rate (80・100・120・140) using right atrial pacing. Regurgitant fraction and total systemic resistance were improved up to 100/min, but aggravated on further increase in heart rate. Cardiac function curve was remarkably improved up to 100/min, but aggravated on further increase in heart rate.


Copyright © 1992, 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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