Paradoxic improvement in regional wall motion during high-dose dobutamine stress echocardiography. A marker for
D Krauss1, T Feldman, R H Marcus
1University of Chicago Medical Center 60637.
Abstract:
Dobutamine stress echocardiography detects myocardial ischemia by inducing regional left ventricular systolic dysfunction. Augmentation of wall motion in hypokinetic segments has also been noted with low-dose dobutamine, suggesting myocardial viability. We report a case of regional ventricular improvement during high-dose dobutamine therapy, which may represent relief from myocardial hibernation or changes in regional loading conditions.
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