TY - GEN
T1 - IN VITRO EVALUATION OF COMBINED CARDIAC STENOTIC AND REGURGITANT VALVE
AU - Einav, S.
AU - Zaretsky, U.
AU - Keren, G.
AU - Sherez, J.
N1 - Publisher Copyright:
© 1996 American Society of Mechanical Engineers (ASME). All rights reserved.
PY - 1996
Y1 - 1996
N2 - The simplified Bernoulli equation may not accurately calculate pressure gradient across the valve in combined aortic stenosis and regurgitation (Cujec, 1992 and Stewart, 1991). 1 lie specific aim of this project is to investigate in a pulse duplicator system the pressure and flow changes lor a caged and tilting disk aortic valve with combined lesions and to correlate parameters derived from Continuous wave and Color Doppler flow mapping to hemodynamic measurements. The various severity of valve insufficiency and/or stenosis were simulated. Parameters, obtained by Doppler measurements, should be corrected in case of combined aortic valve lesions to avoid incorrect diagnosis. Degree of insufficiency in the stenosed valve influenced pressure gradient. Area of regurgitant jet depends oil stenosis sevei ity as well.
AB - The simplified Bernoulli equation may not accurately calculate pressure gradient across the valve in combined aortic stenosis and regurgitation (Cujec, 1992 and Stewart, 1991). 1 lie specific aim of this project is to investigate in a pulse duplicator system the pressure and flow changes lor a caged and tilting disk aortic valve with combined lesions and to correlate parameters derived from Continuous wave and Color Doppler flow mapping to hemodynamic measurements. The various severity of valve insufficiency and/or stenosis were simulated. Parameters, obtained by Doppler measurements, should be corrected in case of combined aortic valve lesions to avoid incorrect diagnosis. Degree of insufficiency in the stenosed valve influenced pressure gradient. Area of regurgitant jet depends oil stenosis sevei ity as well.
UR - http://www.scopus.com/inward/record.url?scp=85169298547&partnerID=8YFLogxK
U2 - 10.1115/IMECE1996-1184
DO - 10.1115/IMECE1996-1184
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AN - SCOPUS:85169298547
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
SP - 201
EP - 202
BT - Advances in Bioengineering
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 1996 International Mechanical Engineering Congress and Exposition, IMECE 1996
Y2 - 17 November 1996 through 22 November 1996
ER -