The Changes in Pattern of Myocardial Shortening by Reduction of Regional Coronary Blood Flow
スポンサーリンク
概要
- 論文の詳細を見る
The relationship between the grade of a decrease in the regional coronary blood flow and the movement of ventricular myocardium of that region was investigated in open chest dog. Blood flow in left anterior descending artery (FLAD) was reduced by stepwise constriction of LAD with ligature. Ventricular segment length was measured in a circumferential plane on the endocardial surface by ultrasonic dimension system. For the elimination of the noise caused by ultrasonic dimension system, the synchronizer was inserted between sample clock of the dimension system and the trigger circuit of the electromagnetic flowmeter.A 20% reduction of FLAD affected the pattern of ischemic myocardial shortening very little. Discontinuance of shortening to the end of systole was occurred by a 20 to 60% reduction in FLAD. Early and/or late systolic bulging was induced by a 60% reduction of FLAD. Systolic bulging with early diastolic shortening was seen in the cases with a 60 to 80% reduction in FLAD. Frank systolic bulging which was always seen by complete occlusion of LAD was produced by a 60 to 90% reduction of FLAD in few cases.
- International Heart Journal刊行会の論文
著者
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Ohsuzu Fumitaka
Department Of Internal Medicine 1^<st> National Defense Medical College
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Takahashi Masando
Department of Internal Medicine, School of Medicine, Keio University
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Hayashi Junichi
Department of Internal Medicine, School of Medicine, Keio University
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Mori Hidezo
Department Of Bioscience Department Of Cardiovascular Surgery
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Ogawa Satoshi
Department Of Anatomy And Neuroscience Osaka University Medical School
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HORIKAWA Muneyuki
Department of Internal Medicine, School of Medicine, Keio University
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Hattori Shigehiko
Department Of Emergency & Critical Care Medicine School Of Medicine Keio University
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Nakamura Yoshiro
Department Of Chemistry Faculty Of Science Konan University
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Hayashi Junichi
Department Of General Medicine Kyorin University School Of Medicine
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MORI Hidezo
Department of Internal Medicine, School of Medicine, Keio University
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