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  • Title: Usefulness of preprocedural serum uric acid level to predict restenosis of bare metal stents.
    Author: Turak O, Canpolat U, Özcan F, Mendi MA, Oksüz F, Işleyen A, Gürel OM, Çay S, Aras D, Aydoğdu S.
    Journal: Am J Cardiol; 2014 Jan 15; 113(2):197-202. PubMed ID: 24157191.
    Abstract:
    Serum uric acid (SUA) level is known as a significant predictor for cardiovascular diseases, partly through increased inflammatory response and smooth muscle cell proliferation. Inflammation and smooth muscle cells play a crucial role in the pathogenesis of in-stent restenosis (ISR). However, the relation between SUA and ISR has not been studied. The aim of the present study was to investigate the predictive value of preprocedural SUA on the development of ISR in patients who undergo coronary bare-metal stent implantation. Clinical, biochemical, and angiographic data from 708 consecutive patients (mean age 60.3 ± 9.3 years, 71% men) who had undergone bare-metal stent implantation and additional control coronary angiography for stable or unstable angina pectoris were analyzed. Patients were divided into tertiles on the basis of preprocedural SUA levels. Stent restenosis was observed in 54 patients (23%) in the lowest tertile, in 79 (34%) in the middle tertile, and in 109 (46%) in the highest tertile (p <0.001). Using multiple logistic regression analysis, diabetes mellitus, smoking, high-density lipoprotein cholesterol, stent length, C-reactive protein level, and preprocedural SUA level emerged as independent predictors of ISR. On receiver-operating characteristics curve analysis, SUA level >5.5 mg/dl had 75% sensitivity and 71% specificity (area under the curve 0.784, p <0.001) in predicting ISR. In conclusion, higher preprocedural SUA is a powerful and independent predictor of bare-metal stent restenosis in patients with stable and unstable angina pectoris.
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