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Doggrell, S.A.

Doggrell,

Carvedilol versus other beta-blockers in heart failure.

Carvedilol is a beta-blocker with ancillary properties. Pilot clinical studies with carvedilol, added to the standard therapy of digoxin, diuretics and ACE inhibitors, showed beneficial effects in mild, moderate and severe heart failure. Patients consistently showed improvement in LV ejection fraction and NYHA functional class. Subsequently large clinical trials showed decreased morbidity and mortality with carvedilol in mild and moderate and more recently, severe heart failure. However, there is little or no improvement in exercise tolerance with carvedilol. The beneficial effects of carvedilol in heart failure are associated with cardiac remodelling. Metoprolol and bisoprolol are selective beta(1)-blockers without ancillary properties. Early studies showed benefits with metoprolol and bisoprolol in heart failure. Large clinical trials established that metoprolol and bisoprolol decreased mortality and morbidity in heart failure. In contrast no benefit has been shown with celiprolol, a selective beta(1)-blocker and beta(2)-stimulant in heart failure. There is a debate as to whether the ancillary properties of carvedilol contribute to its beneficial effect in heart failure, making it a better drug to use than metoprolol. Short-term studies suggested that carvedilol and metoprolol were equivalent in heart failure but short-term is probably not an appropriate way to compare the drugs. A recent long-term study and study in poor responders to metoprolol, suggest that carvedilol may be better than metoprolol in heart failure.[1]

References

Carvedilol versus other beta-blockers in heart failure. Doggrell, S.A. Expert opinion on investigational drugs. (2001) [Pubmed]

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