Em. Juracan et al., Early deterioration followed by improvement in contractility during dobutamine stress echocardiography: An unusual response, J AM S ECHO, 12(12), 1999, pp. 1110-1113
Citations number
17
Categorie Soggetti
Cardiovascular & Respiratory Systems
Journal title
JOURNAL OF THE AMERICAN SOCIETY OF ECHOCARDIOGRAPHY
In 2 patients with severe proximal coronary artery stenosis and normal wall
motion in this territory, we observed marked wall motion abnormalities wit
h low and intermediate doses of dobutamine, followed by marked improvement
with continued dobutamine infusion This unusual response suggests ischemic
preconditioning and recruitment of coronary collaterals and would be recogn
ized only by monitoring of images obtained at all stages of dobutamine infu
sion.