The association of beta-blocker use with mortality in elderly patients with congestive heart failure and advanced chronic kidney disease.
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ABSTRACT: BACKGROUND:Whether the survival benefit of ?-blockers in congestive heart failure (CHF) from randomized trials extends to patients with advanced chronic kidney disease (CKD) [estimated glomerular filtration rate (eGFR) <30?mL/min/1.73 m2 but not receiving dialysis] is uncertain. METHODS:This was a retrospective cohort study using administrative datasets. Older adults from Ontario, Canada, with incident CHF (median age 79?years) from April 2002 to March 2014 were included. We matched new users of ?-blockers to nonusers on age, sex, eGFR categories (>60, 30-60, <30), CHF diagnosis date and a high-dimensional propensity score. Using Cox proportional hazards models, we examined the association of ?-blocker use versus nonuse with all-cause mortality. RESULTS:We matched 5862 incident ?-blocker users (eGFR >60, n?=?3136; eGFR 30-60, n?=?2368; eGFR <30, n?=?358). There were 2361 mortality events during follow-up. ?-Blocker use was associated with reduced all-cause mortality [adjusted hazard ratio (HR) 0.58, 95% confidence interval (CI) 0.54-0.64]. This result was consistent across all eGFR categories (>60: adjusted HR 0.55, 95% CI 0.49-0.62; 30-60: adjusted HR 0.63, 95% CI 0.55-0.71; <30: adjusted HR 0.55, 95% CI 0.41-0.73; interaction term, P?=?0.30). The results were consistent in an intention-to-treat analysis and with ?-blocker use treated as a time-varying exposure. CONCLUSIONS:?-Blocker use is associated with reduced all-cause mortality in elderly patients with CHF and CKD, including those with an eGFR <30. Randomized trials that examine ?-blockers in patients with CHF and advanced CKD are needed.
SUBMITTER: Molnar AO
PROVIDER: S-EPMC7203558 | biostudies-literature | 2020 May
REPOSITORIES: biostudies-literature
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