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J Geriatr Cardiol. 2012 Jun;9(2):137-42. doi: 10.3724/SP.J.1263.2011.11281.

Serum uric acid as an index of impaired renal function in congestive heart failure.

Journal of geriatric cardiology : JGC

Yu Tian, Ying Chen, Bao Deng, Gang Liu, Zhen-Guo Ji, Qing-Zhen Zhao, Yu-Zhi Zhen, Yan-Qiu Gao, Li Tian, Le Wang, Li-Shuang Ji, Guo-Ping Ma, Kun-Shen Liu, Chao Liu

Affiliations

  1. Emergency Department, The First Hospital of Hebei Medical University, Hebei Medical University, 89 Donggang Road, Shijiazhuang 050031, Hebei Province, China.

PMID: 22916059 PMCID: PMC3418902 DOI: 10.3724/SP.J.1263.2011.11281

Abstract

BACKGROUND: Hyperuricemia is frequently present in patients with heart failure. Many pathological conditions, such as tissue ischemia, renal function impairment, cardiac function impairment, metabolic syndrome, and inflammatory status, may impact uric acid (UA) metabolism. This study was to assess their potential relations to UA metabolism in heart failure.

METHODS: We retrospectively assessed clinical characteristics, echocardiological, renal, metabolic and inflammatory variables selected on the basis of previous evidence of their involvement in cardiovascular diseases and UA metabolism in a large cohort of randomly selected adults with congestive heart failure (n = 553). By clustering of indices, those variables were explored using factor analysis.

RESULTS: In factor analysis, serum uric acid (SUA) formed part of a principal cluster of renal functional variables which included serum creatinine (SCr) and blood urea nitrogen (BUN). Univariate correlation coefficients between variables of patients with congestive heart failure showed that the strongest correlations for SUA were with BUN (r = 0.48, P < 0.001) and SCr (r = 0.47, P < 0.001).

CONCLUSIONS: There was an inverse relationship between SUA levels and measures of renal function in patients with congestive heart failure. The strong correlation between SUA and SCr and BUN levels suggests that elevated SUA concentrations reflect an impairment of renal function in heart failure.

Keywords: Factor analysis; Heart failure; Renal function impairment; Serum uric acid

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