ID | 15875 |
Eprint ID | 15875
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フルテキストURL | |
タイトル(別表記) | Oxygen Metabolism of the Hypertrophic Right Ventricle in Open-Chest Dogs
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著者 |
谷 秀樹
岡山大学医学部第一内科学教室
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抄録 | Oxygen metabolism of the right ventricle (RV) was studied in 7 dogs with RV hypertrophy in comparison with that of the left ventricle (LV). The main pulmonary artery of infant dogs was banded to raise the RV pressure by approximately 40 mmHg above the control. Six months later, the oxygen content of arterial and venous blood from the right ventricular mid-anterior wall was preasured. With RV hypertrophy, RV systolic pressure rose from 28±1 to 50±15 mmHg. Oxygen extraction (EO(2)) of the hypertrophic RV was higher (56.6±3.8%) than the that of the normal RV (51.0±3.0%), so that there was no significant difference in EO(2) between the RV and LV. Furthermoere, increases in right coronary artery (RCA) flow without changes in RV-EO(2) met the increased RV O(2) demand caused by isoproterenol infusion or pulmonary artery constriction in hypertrophic RV dogs. In the normal dogs, however RV-EO(2) increased in addition to a rise in RCA flow. These results indicate that O(2) metabolism in the hypertrophic RV is similar to LV O(2) metabolism, and that there is a reduction in the O(2) reserve in the hypertrophic right ventricle.
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キーワード | myocardial oxygen metabolism
right coronary artery
right ventricular hypertrophy
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発行日 | 1987-04-30
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出版物タイトル |
岡山医学会雑誌
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出版物タイトル(別表記) | Journal of Okayama Medical Association
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巻 | 99巻
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号 | 3-4号
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出版者 | 岡山医学会
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出版者(別表記) | Okayama Medical Association
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開始ページ | 203
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終了ページ | 212
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ISSN | 0030-1558
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NCID | AN00032489
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資料タイプ |
学術雑誌論文
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オフィシャル URL | https://www.jstage.jst.go.jp/article/joma1947/99/3-4/99_3-4_203/_article/-char/ja/
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関連URL | http://www.okayama-u.ac.jp/user/oma/index.html
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言語 |
日本語
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著作権者 | 岡山医学会
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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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Eprints Journal Name | joma
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