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  • Title: Effect of Inpatient Dobutamine versus Milrinone on Out-of-Hospital Mortality in Patients with Acute Decompensated Heart Failure.
    Author: King JB, Shah RU, Sainski-Nguyen A, Biskupiak J, Munger MA, Bress AP.
    Journal: Pharmacotherapy; 2017 Jun; 37(6):662-672. PubMed ID: 28475215.
    Abstract:
    STUDY OBJECTIVE: To determine the effect of dobutamine versus milrinone on out-of-hospital mortality in the treatment of patients with acute decompensated heart failure (ADHF). DESIGN: Propensity score weighted retrospective cohort study with mortality as the primary outcome. SETTING: An academic health care system. PATIENTS: Five hundred adult patients with a prior history of heart failure who survived a hospitalization for ADHF that included treatment with dobutamine or milrinone between January 1, 2006, and April 30, 2014. MEASUREMENTS AND MAIN RESULTS: ADHF events were defined as a hospitalization with receipt of an intravenous loop diuretic or a brain-type natriuretic peptide (BNP) value greater than 400 pg/ml during the hospitalization. Patients were followed until death or 180 days from hospital discharge. Risk ratios (RRs) for mortality associated with dobutamine compared with milrinone were calculated at 15, 30, and 180 days postdischarge using Poisson regression with robust error variance. Mean age was 62.7 years, 65.4% were male, and 48.2% had a mean left ventricular ejection fraction (LVEF) of 40% or lower. Overall, 55 (18%) of dobutamine-treated versus 23 (12%) of milrinone-treated patients died during follow-up (RR 1.27, 95% confidence interval [CI] 0.76-2.13, p=0.360). For death from cardiovascular causes, the RR for dobutamine was 1.49 (95% CI 0.79-2.82, p=0.214). For death from worsening heart failure, the RR for dobutamine was 2.55 (95% CI 1.07-6.10, p=0.035). A trend toward significance was observed at day 15 after discharge for all mortality analyses (all p values < 0.10). CONCLUSIONS: Dobutamine was associated with higher short-term out-of-hospital mortality compared with milrinone in patients with ADHF. These results replicate and extend prior associations with mortality and should be confirmed in a prospective study.
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