Lancet
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Randomized Controlled Trial Multicenter Study Clinical Trial
Effect of metoprolol CR/XL in chronic heart failure: Metoprolol CR/XL Randomised Intervention Trial in Congestive Heart Failure (MERIT-HF)
Metoprolol can improve haemodynamics in chronic heart failure, but survival benefit has not been proven. We investigated whether metoprolol controlled release/extended release (CR/XL) once daily, in addition to standard therapy, would lower mortality in patients with decreased ejection fraction and symptoms of heart failure. ⋯ Metoprolol CR/XL once daily in addition to optimum standard therapy improved survival. The drug was well tolerated.