Effects of dobutamine on aortic valve indexes in asymptomatic patients with bileaflet mechanical prostheses in the aortic valve position

C H Tsai; T M Lee; C H Wang; K L Hsu; C S Liau; Y T Lee; S H Chu

doi:10.1016/s0002-9149(97)00192-6

Effects of dobutamine on aortic valve indexes in asymptomatic patients with bileaflet mechanical prostheses in the aortic valve position

Am J Cardiol. 1997 Jun 1;79(11):1546-9. doi: 10.1016/s0002-9149(97)00192-6.

Authors

C H Tsai¹, T M Lee, C H Wang, K L Hsu, C S Liau, Y T Lee, S H Chu

Affiliation

¹ Center for Cardiovascular Research, College of Medicine, National Taiwan University, Taipei.

PMID: 9185654
DOI: 10.1016/s0002-9149(97)00192-6

Abstract

We investigated the effects of alternating transvalvular flow rate on Doppler-derived aortic valve resistance and valve area in asymptomatic patients with mechanical aortic valve replacement under dobutamine infusion. The Gorlin-derived aortic valve area and continuity equation-derived aortic valve area seem to be less flow dependent; valve resistance tends to be flow dependent.

MeSH terms

Adrenergic beta-Agonists / pharmacology*
Adult
Aged
Aged, 80 and over
Aortic Valve / diagnostic imaging
Aortic Valve / drug effects*
Aortic Valve / physiopathology*
Blood Flow Velocity / drug effects
Dobutamine / pharmacology*
Echocardiography, Doppler
Female
Heart Valve Prosthesis*
Humans
Male
Middle Aged

Substances

Adrenergic beta-Agonists
Dobutamine