Experimental Studies on Myocardial Contractility and Hemodynamics in Extrasystoles
スポンサーリンク
概要
- 論文の詳細を見る
Extrasystoles with a fully compensated pause were experimentally induced in dogs for analysis of their effects on myocardial contractility and hemodynam-ics. The first postextrasystolic beat showed improved hemodynamic measurements exceeding the respective values of the pre-extrasystolic beat of the basic rhythm, making some compensation for extrasystole-induced depression of hemodynamics, which was progressively enhanced as the coupling time be-came shorter. The coupling time, the site of origin, and even the frequency of the extrasystole did not affect the rate of compensation, which averaged 60%. It was confirmed that hemodynamics in extrasystoles was mainly affected by two independent factors; the blood volume in the ventricle at the onset of ventricular contraction with the resultant STARLING'S effect, and ventricular contractility for individual beats, the latter of which depends upon myocardial contractility and the sequence of ventricular contraction. Postextrasystolic potentiation was regarded as the positive inotropic effect of the premature activation on the myocardium in postextrasystolic beats.
- 社団法人日本循環器学会の論文
- 1970-08-20
著者
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Mlzuno Yasushi
Ist Div. Dept. Of Med. (prof. S. Hibino) Nagoya University Nagoya
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Ando Koichi
The First Department Of Internal Medicine Nagoya University School Of Medicine
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Mizuno Yasushi
The First Department Of Internal Medicine Nagoya University School Of Medicine
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Yasui Shoji
First Department Of Internal Medicine Nagoya University School Of Medicine.
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TAKADA HIDEO
Dept. of Intern. Med., Mitsubishi-Nagoya Hospital
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TAKADA HIDEO
The First Department of Internal Medicine, Nagoya University School of Medicine
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TAKEUCHI SHOZO
The First Department of Internal Medicine, Nagoya University School of Medicine
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KAITO ATSUO
The First Department of Internal Medicine, Nagoya University School of Medicine
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YOSHIDA SHINJI
The First Department of Internal Medicine, Nagoya University School of Medicine
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HISADA SUMIO
The First Department of Internal Medicine, Nagoya University School of Medicine
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Kaito Atsuo
1st Dept. Of Intern. Med. Nagoya Univ. School Of Med
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Kaito Atsuo
1st Div. Dept. Of Intern. Med. Nagoya Univ. School Of Med.
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Takada Hideo
Dept. Of Intern. Med. Mitsubishi-nagoya Hospital
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Yasui Shoji
Department Of Internal Medicine Mitsubishi Nagoya Hospital
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Hisada Sumio
Department Of Internal Medicine Fujita Gakuen University School Of Medicine.
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Hisada Sumio
1st Dept. Of Intern. Med. Nagoya Univ. School Of Med
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Takeuchi Shozo
The First Department Of Internal Medicine Nagoya University School Of Medicine
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Mizuno Yasushi
Department Of Internal Medicine Fujita Health University School Of Medicine
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Yoshida Shinji
Department Of Internal Medicine Mitsubishi Nagoya Hospital
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Hisada Sumio
The First Department Of Internal Medicine Nagoya University School Of Medicine
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Yoshida Shinji
The First Department Of Internal Medicine Nagoya University School Of Medicine
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