caa a22 4500 477112986 CHVBK 20180405111615.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF01744504 doi (NATIONALLICENCE)springer-10.1007/BF01744504 Pulmonary blood flow profiles with reduced right ventricular function in lambs [Elektronische Daten] [Hiroshi Katayama, G. Henry, Robert Krzeski, Carol Lucas, Belinda Ha, Jose Ferreiro] Summary: The determinants of right ventricular (RV) performance with damaged RV free wall, such as occurs with RV infarction, are still unclear. Using 20-MHz Doppler ultrasound equipment, we investigated the changes in pulmonary blood flow velocity profiles before and after ligation of the right coronary artery. RV dp/dt, stroke volume, RV stroke work, aortic pressure and cardiac output decreased and central venous pressure rose after the ligation. The RV stroke work — enddiastolic pressure relationship indicated impaired RV function following ligation. We observed shortened acceleration time (65.0 ± 15.1 vs 54.4 ± 6.2ms,P < 0.05) and reduced maximum velocity of forward flow (59.0 ± 5.9 vs 52.5 ± 7.6cm/s,P < 0.05) after the ligation. Acceleration was interrupted earlier after ligation than before ligation. These alterations in flow are thought to be a consequence of the altered movement of the RV free wall and ventricular septum induced by RV infarction. Springer-Verlag, 1996 Doppler ultrasound nationallicence pulmonary blood flow velocity nationallicence right ventricular infarction nationallicence acceleration time nationallicence maximum velocity nationallicence Katayama Hiroshi Department of Pediatrics, Osaka Medical College, 2-7 Daigaku-machi, 569, Takatsuki, Osaka, Japan aut Henry G. Department of Pediatrics, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut Krzeski Robert Department of Pediatrics, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut Lucas Carol Department of Biomedical Engineering, School of Medicine, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut Ha Belinda Department of Biomedical Engineering, School of Medicine, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut Ferreiro Jose Department of Pediatrics, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut Heart and Vessels Springer-Verlag 11/2(1996-03-01), 57-63 0910-8327 11:2<57 1996 11 380 https://doi.org/10.1007/BF01744504 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01744504 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Katayama Hiroshi Department of Pediatrics, Osaka Medical College, 2-7 Daigaku-machi, 569, Takatsuki, Osaka, Japan aut NATIONALLICENCE 700 1- Henry G. Department of Pediatrics, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut NATIONALLICENCE 700 1- Krzeski Robert Department of Pediatrics, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut NATIONALLICENCE 700 1- Lucas Carol Department of Biomedical Engineering, School of Medicine, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut NATIONALLICENCE 700 1- Ha Belinda Department of Biomedical Engineering, School of Medicine, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut NATIONALLICENCE 700 1- Ferreiro Jose Department of Pediatrics, The University of North Carolina, 311 Burnett — Womack Building, CB# 7220, 27599-7220, Chapel Hill, NC, USA aut NATIONALLICENCE 773 0- Heart and Vessels Springer-Verlag 11/2(1996-03-01), 57-63 0910-8327 11:2<57 1996 11 380 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer