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Effects of candesartan on mortality and morbidity in patients with chronic heart failure: the CHARM-Overall programme.

Lancet (London, England) | Sep 6, 2003

BACKGROUND: Patients with chronic heart failure (CHF) are at high risk of cardiovascular death and recurrent hospital admissions. We aimed to find out whether the use of an angiotensin-receptor blocker could reduce mortality and morbidity. METHODS: In parallel, randomised, double-blind, controlled, clinical trials we compared candesartan with placebo in three distinct populations. We studied patients with left-ventricular ejection fraction (LVEF) 40% or less who were not receiving angiotensin-converting-enzyme inhibitors because of previous intolerance or who were currently receiving angiotensin-converting-enzyme inhibitors, and patients with LVEF higher than 40%. Overall, 7601 patients (7599 with data) were randomly assigned candesartan (n=3803, titrated to 32 mg once daily) or matching placebo (n=3796), and followed up for at least 2 years. The primary outcome of the overall programme was all-cause mortality, and for all the component trials was cardiovascular death or hospital admission for CHF. Analysis was by intention to treat. FINDINGS: Median follow-up was 37.7 months. 886 (23%) patients in the candesartan and 945 (25%) in the placebo group died (unadjusted hazard ratio 0.91 [95% CI 0.83-1.00], p=0.055; covariate adjusted 0.90 [0.82-0.99], p=0.032), with fewer cardiovascular deaths (691 [18%] vs 769 [20%], unadjusted 0.88 [0.79-0.97], p=0.012; covariate adjusted 0.87 [0.78-0.96], p=0.006) and hospital admissions for CHF (757 [20%] vs 918 [24%], p<0.0001) in the candesartan group. There was no significant heterogeneity for candesartan results across the component trials. More patients discontinued candesartan than placebo because of concerns about renal function, hypotension, and hyperkalaemia. INTERPRETATION: Candesartan was generally well tolerated and significantly reduced cardiovascular deaths and hospital admissions for heart failure. Ejection fraction or treatment at baseline did not alter these effects.

Pubmed ID: 13678868 RIS Download

Mesh terms: Adolescent | Adult | Angiotensin Receptor Antagonists | Angiotensin-Converting Enzyme Inhibitors | Antihypertensive Agents | Benzimidazoles | Cardiac Output, Low | Cardiovascular Diseases | Cause of Death | Double-Blind Method | Female | Follow-Up Studies | Heart Failure | Humans | Male | Placebos | Tetrazoles | Treatment Outcome