Echocardiographic Evaluation of Left Ventricular Filling in Mitral Stenosis Role of Atrial Contraction
スポンサーリンク
概要
- 論文の詳細を見る
Echocardiographic evaluation of left ventricular volume change during rapid and atrial filling periods was made in patients with mital stenosis.The significant reduction of rapid filling volume was observed and the rate of rapid filling was approximately the half of normal in mitral stenosis. The rapid filling period showed a good correlation to the mitral valve area measured at operation. After surgical treatment, the rate of rapid filling was significantly increased but was still significantly smaller than normal. It was suggested that the remained structural abnormality of mitral apparatus depressed the inflow through the mitral valve in early diastole despite successful mitral valvotomy.Left ventricular filling during atrial contraction (atrial filling) was augmented twice as much as normal in patients with milder mitral stenosis, compensating the decreased early diastolic filling. In contrast, the atrial filling did not increase in severe mitral stenosis, resulting in the decreased cardiac output. Following mitral commissurotomy, the atrial filling in milder mitral stenosis was reduced but remained significantly larger than normal. There was no change of atrial filling in severe mitral stenosis postoperatively. This fact suggested the existence of impaired contraction of left atrium in cases with severe mitral stenosis. Our results show that the altered left atrial transport function plays an important role in the left ventricular filling in mitral stenosis.
- International Heart Journal刊行会の論文
著者
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Machii Kiyoshi
Center For Cardiovascular Disease Mitsui Memorial Hospital
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Matsuda Mitsuo
First Dept. Of Intern Med. Faculty Of Med. Univ. Of Tokyo
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Umeda Toru
Center for Cardiovasc. Dis., Mitsui Memorial Hosp.
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Yamaguchi Tetsu
Center For Cardiovascular Disease
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Yamaguchi Tetsu
First Dept. Of Intern Med. Faculty Of Med. Univ. Of Tokyo
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Machii Kiyoshi
Center For Cardiovasc. Dis. Mitsui Memorial Hosp.
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MATSUDA Mitsuo
First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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YAMAGUCHI Tetsu
First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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