Serum Uric Acid and Atrial Fibrillation: Meta-analysis

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Hyperuricemia has been recently speculated to be associated with the development of atrial fibrillation (AF). A meta-analysis of observational studies was conducted to explore the relationship between serum uric acid (SUA) and AF. We searched the MEDLINE, EMBASE, and CINAHL databases and performed extensive bibliography search to identify studies with mean SUA level for patients with and without AF. Key search terms were “atrial fibrillation” and “uric acid.” Under the random-effects model, the pooled standardized difference in means between patients with and without AF was calculated. A total of 24 studies with 30,609 patients were included for quantitative analyzation of the difference in SUA levels between the patients with and without AF. The SUA level of patients with atrial AF was found to be significantly higher compared with those without AF (standardized difference in means = 0.66; 95% confidence interval, 0.43–0.88; P < 0.0001). The mean SUA level of patients with AF significantly is higher than those without AF.

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