Beta blockers for CHF

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Abstract
Several large clinical trials have shown that beta blockers can reduce morbidity and mortality in patients with CHF. Therefore, current guidelines for treatment of CHF now include beta blockers as standard therapy for patients with left ventricular systolic dysfunction (ejection fraction < or = 40%) and mild to moderate heart failure. Beta-blocker therapy for CHF should be started cautiously and increased gradually to avoid exacerbating symptoms of heart failure. At this time, data for therapy in patients with NYHA class I or IV symptoms are limited, and it is unclear whether all beta blockers confer benefit or whether some are better than others. Several trials are under way to answer these questions. Until more evidence is available, only those agents that have proved beneficial in mortality trials should be used to manage CHF.