An old friend: uric acid and its association with fractional flow reserve

Abstract

Background/aim: The aim of this study was to investigate the importance of preprocedural uric acid (UA) level in predicting fractionalflow reserve (FFR) results of intermediate coronary lesions in patients with stable coronary artery disease undergoing coronaryangiography.Materials and methods: We retrospectively analyzed 293 patients who underwent FFR measurement to determine the significance ofintermediate coronary stenosis detected by conventional coronary angiography. Patients were divided into 2 groups: Group 1 (n = 127)included patients with FFR of 0.80 (hemodynamically nonsignificant lesions). Uric acid levels were assessed in both groups with the enzymatic colorimetric methodby clinical chemistry autoanalyzer.Results: The mean UA level was significantly higher in patients whose FFR indicated hemodynamically significant coronary lesions(UA: 5.43 ± 1.29 mg/dL in Group 1 vs. 4.51 ± 1.34 mg/dL in Group 2, P < 0.001).Conclusion: Elevated UA levels are associated with hemodynamically significant coronary lesions measured with FFR. Uric acid maybe used as a predictor of hemodynamically compromised coronary lesions before FFR procedures.