• J Res Med Sci · May 2014

    Cystatin C, N-terminal probrain natriuretic peptides and outcomes in acute heart failure with acute kidney injury in a 12-month follow-up: Insights into the cardiorenal syndrome.

    • Zhong-Bao Ruan, Li Zhu, Yi-Gang Yin, and Ge-Cai Chen.
    • Department of Cardiology, Taizhou People's Hospital, Taizhou 225300, P. R. China.
    • J Res Med Sci. 2014 May 1; 19 (5): 404-9.

    BackgroundCystatin C (Cys C) has been implicated as a prognostic marker in cardiovascular disease. The aim of this study was to evaluate the value of Cys C as a marker of acute kidney injury (AKI) in acute heart failure (AHF), the impact of Cys C and N-terminal probrain natriuretic peptides (NT-proBNP) on in-hospital and 12 months mortality were also investigated.Materials And MethodsA total of 162 patients with AHF were enrolled. NT-proBNP, Cys C, serum creatinine (Scr), blood urea nitrogen (BUN) and parameters of echocardiography were measured for analyze. The in-hospital and 12 months mortality was analyzed.ResultsThere was 28 (17%) of all AHF patients with AKI. Compared with no-AKI patients, the levels of Cys C (1.51 ± 0.34 vs. 1.32 ± 0.29, P = 0.003) and NT-proBNP (8163.87 ± 898.06 vs. 5922.45 ± 576.73, P = 0.001) were higher in AKI patients. Higher levels of NT-proBNP (odds ratio (OR) = 1.92, 95% confidence interval (CI): 2.19-10.98, P = 0.018, OR = 4.31, 95% CI: 2.35-9.82, P = 0.002, respectively) and Cys C (OR = 1.48, 95% CI: 1.75-4.16, P = 0.027, OR = 2.72, 95% CI: 1.92-4.28, P = 0.017, respectively) were independent association with the in-hospital and 12 months mortality. Cys C was positively correlated with NT-proBNP (r = 0.87, P < 0.001). Combining tertiles of Cys C and NT-proBNP improved risk stratification further. Compared with patients without AKIcysC, patients with AKIcysC was associated with higher in-hospital (7/28 vs. 10/134, P = 0.002) and 12-month mortality (13/28 vs. 32/134, P = 0.001).ConclusionCys C was not only a promising risk marker in patients hospitalized for AHF, but also an independent predictor of 12-month mortality. Combining tertiles of Cys C and NT-proBNP could be used to distinguish the mortality risk identification of patients with AHF. AKI was an independent predictor of in-hospital and 12-month mortality.

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