Sonographic Evaluation of Renal Artery Stenosis in Patients with Chronic Kidney Disease

Abstract

The purpose of this study was to investigate the prevalence and characteristics of renal artery stenosis (RAS) in patients with chronic kidney disease (CKD) by duplex ultrasonography. From April 2007 to July 2010, renal artery duplex scanning was performed in 219 patients. CKD was defined as having estimated glomerular filtration rate (eGFR) of less than 60 mL/min/1.73 m² or proteinuria. In 113 patients with CKD, RAS was found in 20 patients (18%). It was significantly higher than the non-CKD group (6%) (p=0.006). Renal duplex ultrasonography is a useful diagnostic tool for identification of RAS in patients with CKD.