In 2 patients with severe proximal coronary artery stenosis and normal wall motion in this territory, we observed marked wall motion abnormalities with 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 recognized only by monitoring of images obtained at all stages of dobutamine infusion.
|Original language||English (US)|
|Number of pages||4|
|Journal||Journal of the American Society of Echocardiography|
|State||Published - Jan 1 1999|
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging
- Cardiology and Cardiovascular Medicine