Abstract
Objective: The prognostic utility of serum albumin level for mortality in heart failure patients has received considerable attention. This meta-analysis sought to examine the prognostic significance of hypoalbuminemia for prediction of all-cause mortality in patients with heart failure.Materials and methods: Pubmed and Embase databases were systematically searched up to 10 March 2019 to identify eligible studies. Epidemiological studies reporting a multivariable-adjusted risk estimate of all-cause mortality associated with hypoalbuminemia in acute or chronic heart failure patients were included.Results: Nine studies from 10 articles involving 16,763 heart failure patients were included in the final analysis. Hypoalbuminemia was associated with an increased in-hospital mortality (risk ratio [RR] 4.90; 95% confidence interval [CI] 2.96–8.10) and long-term all-cause mortality (RR 1.75; 95% CI 1.35–2.27) in acute heart failure patients. Chronic heart failure patients with hypoalbuminemia exhibited a 3.5-fold (95% CI 1.29–9.73) higher risk for long-term all-cause mortality.Conclusions: Hypoalbuminemia is possibly an independent predictor of all-cause mortality in patients with acute or chronic heart failure. However, the current findings should be further confirmed in future prospective studies. Moreover, future well-designed randomized controlled trials would be required to investigate whether correcting hypoalbuminemia in heart failure patients has potential to improve survival outcome.
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