Echocardiogram and Phonocardiogram Related to the Movement of the Pulmonary Valve
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概要
- 論文の詳細を見る
Pulmonary valve movement and the related acoustic phenomena were investigated using high speed strip-chart echo- and phonocardiographic recording. The opening of the pulmonary valve had no definite relationship to the acoustic phenomena, whereas the pulmonary ejection sound was closely related in time to the early systolic maximal opening of the valve. The concomitant pulmonary ejection systolic murmur faded away by the time of the mid-systolic semi-closure of the valve, where the tiny extrasound occurred in a half of cases. The pulmonary component of the second heart sound occurred after the valve closure, and the time lag maximally reached up to 50 msec. Pulmonary hypertension tended to minimize this delay, giving the so-called single loud second heart sound. Graham Steell murmur started with the pulmonary component of the second heart sound and reached up to the isometric contaction phase beyond the first heart sound.
- International Heart Journal刊行会の論文
著者
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Matsuhisa Mokuo
The Second Department Of Internal Medicine School Of Medicine Tokushima University
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Sakamoto Tsuguya
The 2nd Department Of Internal Medicine University Of Tokyo
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Hayashi Terumi
The Second Department Of Internal Medicine Faculty Of Eledicine University Of Tokyo
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Sakamoto Tsuguya
The Scond Department Of Internal Medicine Faculty Of Medicine Uiversity Of Tokyo
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Ichiyasu Hirofumi
The Second Department Of Internal Medicine Faculty Of Eledicine University Of Tokyo
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MATSUHISA Mokuo
The Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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HAYASHI Terumi
The Second Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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