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The association between serum uric acid (SUA) and N-terminal pro-B-type natriuretic peptide (NT-proBNP) concentrations in patients with coronary artery disease (CAD) is unclear.We retrospectively studied 171 patients with suspected or established CAD and without overt heart failure who were consecutively admitted to our Division of Cardiology from February to August 2016. Plasma NT-proBNP concentrations were measured using a chemiluminescent immunoassay method. A conventional echocardiography and coronary angiogram were also performed in all patients.Patients in the 3rd SUA tertile had higher median plasma NT-proBNP concentrations compared with those belonging to 2nd or 1st SUA tertile, respectively (443 [IQR: 222-1381] vs. 224 [99-487] vs. 162 [68-307] pg/mL; p 0.001). After adjustment for age, sex, body mass index, hypertension, diabetes, chronic kidney disease, prior ischemic heart disease, prior heart failure, medication use, and left ventricular ejection fraction (LVEF), patients belonging to the 3rd SUA tertile had an increased risk of higher plasma NT-proBNP concentrations (adjusted-standardized beta coefficient: 0.310, p 0.001). Almost identical results were found when patients treated with allopurinol (n = 14), or those with prior HF (n = 8) were excluded from the analyses.These results show that increased SUA levels are strongly associated with higher plasma NT-proBNP concentrations in patients with suspected or established CAD and without overt heart failure, independent of established cardiovascular risk factors, LVEF, medication use and other potential confounders. |
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