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dobutamine hydrochloride. A synthetic beta-agonist whose primary effect is to increase cardiac contractility, with little effect on systemic vascular resistance. It produces less tachycardia than dopamine and has no effect on renal blood flow. It is of use in congestive heart failure and cardiogenic shock.
Dobutamine stress echocardiography (DSE). Dobutamine is a medication given by IV that stimulates the heart and mimics the effects of exercise by causing the heart to beat faster and stronger. A dobutamine stress echo is performed as a substitute for an exercise echo, because some people may be unable to exercise on a treadmill or stationary bicycle due to conditions such as: