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Intermittent dobutamine treatment in patients with chronic refractory congestive heart failure: a randomized,
Background:
Intravenous dobutamine administration improves short-term hemodynamics in patients with severe congestive heart failure (CHF). However, the clinical benefit of periodic administration remains controversial.
Objective:
To evaluate the efficacy of intermittent dobutamine administration in patients with refractory CHF.
Methods:
Nineteen patients with New York Heart Association class III/IV, ischemia-induced CHF participated in this double-blind, placebo-controlled study. All patients received intravenous dobutamine or placebo over a 24-hour period every 2 to 3 weeks for 6 months. They were also treated with angiotensin-converting enzyme inhibitors, digoxin, and diuretics. The number of admissions for CHF and mortality rate were compared.
Results:
Ten patients received dobutamine and nine received placebo. The pretreatment characteristics were similar in both groups. No statistically significant difference was observed between the number of admissions for CHF (p = 0.11). The median survival after enrollment was 7.97 months in the placebo group and 4.6 months in the dobutamine group. The Kaplan-Meier survival curves overlay, with no statistically significant difference between the treatment arms (p = 0.7).
Conclusion:
Intermittent dobutamine infusions in patients with refractory CHF have no effect on the need for hospitalization or on survival.