Right Ventricular Mechanical and Energetic Properties : SYMPOSIUM ON COR PULMONALE
スポンサーリンク
概要
- 論文の詳細を見る
To formulate right ventricular (RV) mechanical and energetic properties in terms of the time-verying elastance model, Emax and the systolic pressure-volume are (PVA) of RV were measured in the excised cross-circulated heart preparation, while the left ventricle was beating unloaded. Emax of RV was constant, and independent of the RV volume, the stroke volume, the ejection velocity, and the pre-ejection period in the control contractile state. Enhancement of the contractile state with calcium increased Emax, and reduction of the contractile state with propranolol decreased Emax. The whole heart oxygen consumption (Vo_2) was linearly regressed on PVA of RV, in both the control and the calcium-enhanced contractile state. Calcium elevated the regression line in a parallel manner. The slope of the regression line was (1.85±0.19)×10^<-5> ml O_2/mmHg ml in the control state, and (1.57±0.44) in the calcium state. These slope values were similar to those in left ventricle (LV). We there fore conclude that mechanical and energetic properties of RV are similar to those of LV.
- 社団法人日本循環器学会の論文
- 1989-10-20
著者
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Kamiya Tetsuro
Department of Pedeatrics
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Yamada Osamu
Department Of Pediatric Cardiology Division Of Cardiology National Cardiovascular Center
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Yamada Osamu
Department Of Cardiovascular Dynamics National Cardiovascular Center Research Institute
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Kamiya Tetusro
Division Of Pediatrics National Cardiovascular Center
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Suga Hiroyuki
Cardiovascular Dynamics National Cardiovascular Center
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Yamada Osamu
Department Of Pediatrics National Cardiovascular Center
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KAMIYA TETSURO
The Department of Pediatrics. National Heart Institute. Osaka
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Kamiya Tetsuro
Department Of Pediatrics National Cardiovascular Center
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Kamiya Tetsuro
Department Pediatrics National Cardiovascular Center
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Kamiya Tetsuro
Department Of Pediatrics Kyoto University Faculty Of Medicine.
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Kamiya Tetsuro
Dept. Of Pediatrics Kyoto Univ.
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Kamiya Tetsuro
Departments Of Cardiovascular Dynamics And Pediatrics National Cardiovascular Center
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KAMIYA Tetsuro
Department of Cardiovascular Pediatrics, National Cardiovascular Center
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