Prognosis and mechanism of death in treated heart failure: data from the placebo arm of Val-HeFT.
The magnitude of benefit on mortality of combined angiotensin-converting enzyme inhibitor (ACEI) and beta-blocker (BB) therapy for heart failure cannot be reliably assessed from prospective randomized trials of individual drugs with intent-to-treat analysis. The placebo arm of the Valsartan Heart Failure Trial (Val-HeFT) included patients who remained on background therapy with ACEIs, BBs, neither, or both. The outcomes in these four subgroups should provide a better guide to mortality benefit. Overall mortality (mean follow-up, 23 months) was 31.6% in those receiving neither neurohormonal blocker, 29% and 39% lower in those on ACEIs or BBs, respectively, and 62% lower (11.9% mortality) in those receiving both drugs. In the neither neurohormonal inhibitor group, 48% of the heart failure-related deaths were adjudicated as sudden, whereas in the group receiving ACEIs and BBs, 79% of the deaths were sudden, and pump failure mortality was only 1% per year. The combination of ACEIs and BBs exerts a greater mortality reduction than suggested from clinical trials and reduces pump failure mortality to 1% per year.
Cohn, JN; Carson, PE; O'Connor, C; Opasich, C; Piña, IL; Scherillo, M; Sinagra, G; Warner-Stevenson, L; Tristani, FE; Volpi, A
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