Usefulness of dobutamine echocardiography in the hemodynamic assessment of mechanical prostheses in the aortic valve position.
Dobutamine stress echocardiography is a simple, safe, and readily available method to evaluate prosthetic valve hemodynamics under various flow conditions. A normal response of aortic valve prostheses to dobutamine infusion is a 100% increment in transprosthetic pressure gradients with an unchanged valve area.
Zabalgoitia
M
M
Department of Medicine/Cardiology, The University of Texas Health Science Center at San Antonio, 78284-7872, USA.
Kopec
K
K
Abochamh
D A
DA
Oneschuk
L
L
Herrera
C J
CJ
O'Rourke
R A
RA
D000318:Adrenergic beta-Agonists; D000368:Aged; D001021:Aortic Valve / Q000000981:diagnostic imaging* / Q000503:physiopathology* / Q000601:surgery; D004280:Dobutamine; D015150:Echocardiography, Doppler / Q000379:methods; D005260:Female; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests
D000318:Adrenergic beta-Agonists; D004280:Dobutamine