ID | 31059 |
JaLCDOI | |
フルテキストURL | |
著者 |
Haraoka, Shoichi
Central Laboratories
Saito, Daiji
Okayama University
Ueda, Minoru
Okayama University
Ogino, Yasuhiro
Okayama University
Yoshida, Hidenori
Okayama University
Kusuhara, Shunichi
Okayama University
Yoshioka, Nobuhiko
Okayama University
Kawasaki, Tomoko
Okayama University
|
抄録 | The correlation between the systolic time interval and abnormal contraction in ischemic myocardium was studied in anesthetized open-chest dogs. A strain-gauge was sutured on the surface of the left ventricular wall perfused by the left anterior descending coronary artery (LAD) for measuring segment-length. The left ventricular stroke volume decreased progressively after occlusion of LAD. The left ventricular ejection time (LVET) was progressively shortened in close correlation with the elongation of segment-length at the onset of isometric relaxation in 20 seconds after LAD occlusion when early systolic myocardial contraction and isometric contraction time (ICT) were not affected. ICT was gradually prolonged and closely related with the lengthening of the early systolic segment-length, while LVET recovered toward the control level in spite of further decrease in stroke volume. A close relationship was observed between ICT/LVET and stroke volume (gamma = 0.76, P less than 0.01). The results suggested the possibility that LVET was normalized even when the left ventricular function was impaired, and ICT/LVET ratio was the most sensitive index of LV dysfunction. |
キーワード | STI
segmental function
myocardial ishemia
|
Amo Type | Article
|
出版物タイトル |
Acta Medica Okayama
|
発行日 | 1978-06
|
巻 | 32巻
|
号 | 2号
|
出版者 | Okayama University Medical School
|
開始ページ | 97
|
終了ページ | 107
|
ISSN | 0386-300X
|
NCID | AA00508441
|
資料タイプ |
学術雑誌論文
|
言語 |
英語
|
論文のバージョン | publisher
|
査読 |
有り
|
PubMed ID | |
NAID |