Journal
AMERICAN JOURNAL OF MEDICINE
Volume 113, Issue 8, Pages 650-656Publisher
EXCERPTA MEDICA INC
DOI: 10.1016/S0002-9343(02)01346-3
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PURPOSE: Randomized trials have shown that beta-blockers prevent morbidity and mortality in heart failure. However, whether beta-blockers are effective in older patients or those with conditions that would have led to their exclusion from these trials remains unclear, SUBJECTS AND METHODS: The associations between beta-blocker use and outcomes were examined in a population-based cohort of 11,942 older (age greater than or equal to65 years) patients with incident heart failure between 1994 and 1999. Cox proportional hazards models were used to adjust for propensity scores, age, sex, comorbid conditions, and other medications. RESULTS: The mean (+/- SD) age of the patients was 79 +/- 8 years, 5819 (49%) were men, and 2569 (22%) had Charlson comorbidity scores of at least 2. During follow-up (median, 21 months), 3539 patients were hospitalized for heart failure and 6757 died. Overall, 1162 patients received beta-blockers. After adjustment, beta-blocker use was associated with substantial reductions in all-cause mortality (hazard ratio [HR] = 0.72; 95% confidence interval [CI]: 0.65 to 0.80), mortality due to heart failure (HR = 0.65; 95% (1: 0.47 to 0.90), and hospitalizations for heart failure (HR = 0.82; 95% CI: 0.74 to 0.92). These endpoints were less frequent in patients treated with beta-blockers than in untreated patients in all examined subgroups. All doses of beta-blockers were associated with benefit,but there was a trend towards greater benefit in patients prescribed higher doses. CONCLUSION: The benefits of beta-blockers seen in randomized trials extend to older patients and to those with conditions that would have led to their exclusion from the trials. There is a need for a randomized trial comparing, different doses of beta-blockers in heart failure. (C)2002 by Excerpta Medica, Inc.
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