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Metoprolol reverses left ventricular remodeling in patients with asymptomatic systolic dysfunction: the REversal of VEntricular Remodeling with Toprol-XL (REVERT) trial.

Author(s): Colucci WS, Kolias TJ, Adams KF, Armstrong WF, Ghali JK, Gottlieb SS, Greenberg B, Klibaner MI, Kukin ML, Sugg JE, REVERT Study Group

Affiliation(s): Cardiovascular Medicine, Boston University Medical Center, 88 E Newton St, Boston, MA 02118, USA. wilson.colucci@bmc.org

Publication date & source: 2007-07-03, Circulation., 116(1):49-56. Epub 2007 Jun 18.

Publication type: Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

BACKGROUND: There are no randomized, controlled trial data to support the benefit of beta-blockers in patients with asymptomatic left ventricular systolic dysfunction. We investigated whether beta-blocker therapy ameliorates left ventricular remodeling in asymptomatic patients with left ventricular systolic dysfunction. METHOD AND RESULTS: Patients with left ventricular ejection fraction <40%, mild left ventricular dilation, and no symptoms of heart failure (New York Heart Association class I) were randomly assigned to receive extended-release metoprolol succinate (Toprol-XL, AstraZeneca) 200 mg or 50 mg or placebo for 12 months. Echocardiographic assessments of left ventricular end-systolic volume, end-diastolic volume, mass, and ejection fraction were performed at baseline and at 6 and 12 months. The 149 patients randomized to the 3 treatment groups (200 mg, n=48; 50 mg, n=48; and placebo, n=53) were similar with regard to all baseline characteristics including age (mean, 66 years), gender (74% male), plasma brain natriuretic peptide (79 pg/mL), left ventricular end-diastolic volume index (110 mL/m2), and left ventricular ejection fraction (27%). At 12 months in the 200-mg group, there was a 14+/-3 mL/m2 decrease (least square mean+/-SE) in end-systolic volume index and a 6+/-1% increase in left ventricular ejection fraction (P<0.05 versus baseline and placebo for both). The decrease in end-diastolic volume index (14+/-3) was different from that seen at baseline (P<0.05) but not with placebo. In the 50-mg group, end-systolic and end-diastolic volume indexes decreased relative to baseline but were not different from what was seen with placebo, whereas ejection fraction increased by 4+/-1% (P<0.05 versus baseline and placebo). CONCLUSION: Beta-blocker therapy can ameliorate left ventricular remodeling in asymptomatic patients with left ventricular systolic dysfunction.

Page last updated: 2007-08-04

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