Assessment of Pulmonary Venous and Transmitral Flow in Closed-Chest Dogs Under Various Loading Conditions by Transesophageal Doppler Echocardiography
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概要
- 論文の詳細を見る
Pulmonary venous flow velocity(PVFVe), pulmonary venous dimension(PVD)and transmitral flow(TMF)velocity were examined under various loading conditions in 15 anesthetized closed-chest dogs by transesophageal Doppler echocardiography(TEE). We also compared PVFVe with pulmonary venous flow volume(PVFVo)simultaneously in open-chest dogs using an ultrasonic flow probe. PVFVo decreased by more than 50% and PVD also decreased significantly during preload reduction, while there was no change in PVFVe. This discrepancy between PVFVo and PVFVe was apparently due to the collapse of pulmonary veins. TMF consisted of both rapid-filling flow velocity and atrial flow velocity components(R and A), while PVF consisted of systolic and diastolic forward flow velocity components(S and D). The peak values of R, A, S and D and the time-velocity integrals of each wave(RI, AI, SI and DI, respectively)were measured. There was a significant correlation between the changes in RI and SI/DI during preload reduction(r=0.82, p<0.001)and during afterload increase(r=-0.59, p<0.05). These results suggest that changes in RI with different loading conditions might be attributable to changes in atrial reservoir volume and conduit volume.
- 社団法人日本循環器学会の論文
- 1996-01-20
著者
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Kawamura K
Department Of Internal Medicine (iii) Osaka Medical College
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Katayama Kazuhiro
Department Of Internal Medicine (iii) Osaka Medical College
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Katayama Kazuhiro
Second Department Of Internal Medicine Yamaguchi University School Of Medicine
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Takaki Akira
Second Department of Internal Medicine, Yamaguchi University, School of Medicine
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Sakai Hisanori
Second Department of Internal Medicine, Yamaguchi University, School of Medicine
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Tanaka Nobuaki
Second Department of Internal Medicine, Yamaguchi University, School of Medicine
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Matsuzaki Masunori
Second Department of Internal Medicine, Yamaguchi University, School of Medicine
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Takaki Akira
Division Of Cardiology Tokuyama Central Hospital
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Tanaka Nobuaki
Department Of Clinical Laboratory Medicine Yamaguchi Grand Medical Center
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Sakai Hisanori
Departments Of Cardiovascular Medicine Konan Saint Hill Hospital
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Tanaka Nobuaki
Division Of Cardiology Department Of Medicine And Clinical Science Yamaguchi University Graduate Sch
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Matsuzaki Masunori
Second Department Of Internal Medicine Yamaguchi University School Of Medicine
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Sakai Hisanori
Second Department Of Internal Medicine Yamaguchi University School Of Medicine
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