ID | 30856 |
JaLCDOI | |
フルテキストURL | |
著者 |
Nawa, Sugato
Okayama University
Senoo, Yoshimasa
Okayama University
Teramoto, Shigeru
Okayama University
|
抄録 | Dynamic ergometer exercise in a supine position was applied to 64 patients more than 1 year after valvular heart surgery, and the left ventricular reserve was evaluated echocardiographically. The left ventricular reserve declined in the mitral stenosis-mitral valve replacement group, while it was better maintained in the mitral stenosis-mitral commissurotomy, aortic regurgitation and aortic stenosis groups. The patients were divided into 3 groups depending on whether the percentage increase during exercise of stroke index, an index of left ventricular pump function, increased, unchanged, or decreased. The percentage increase of mean velocity of circumferential fibre shortening (y) and that of left ventricular end-diastolic diameter (x) during exercise were plotted for each group. The increased group was isolated from the unchanged group by the line of y = -5.02x + 30.1; the unchanged group was isolated from the decreased group by that of y = -5.68x-10.0, and the increased and unchanged groups were clearly isolated from the decreased group by that of y = -6.86x-4.76. We conclude that dynamic ergometer exercise echocardiography is useful for evaluating the left ventricular reserve of postoperative patients with valvular heart disease. It was also thought that the subclinical state of cardiac failure can be effectively detected by the present method.</P> |
キーワード | left ventricular reserve
dynamic exercise echocardiography
valvular heart disease
ergometer
|
Amo Type | Article
|
出版物タイトル |
Acta Medica Okayama
|
発行日 | 1989-08
|
巻 | 43巻
|
号 | 4号
|
出版者 | Okayama University Medical School
|
開始ページ | 223
|
終了ページ | 231
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ISSN | 0386-300X
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NCID | AA00508441
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資料タイプ |
学術雑誌論文
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言語 |
英語
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論文のバージョン | publisher
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査読 |
有り
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PubMed ID | |
Web of Science KeyUT |