Dobutamine is useful in congestive heart failure because:
a. It causes less increase in heart rate than other sympathomimetics
b. It is less expensive than dopamine
c. It may be given as a single-dose bolus
d. Other medications are ineffective at increasing cardiac contractility
a
Rationale: a. Correct.
b. It would be unethical to administer or withhold a medication based on cost.
c. Dobutamine is administered by intravenous infusion.
d. There are other medications that are effective, however, dobutamine causes less increase of heart rate and oxygen demand.
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