Prevalence of Renal Artery Stenosis in Patients Undergoing Coronary Angiography

Abstract

BACKGROUND Renal Artery Stenosis (RAS) is an independent risk factor for cardiovascular diseases. The present study was designed to assess the prevalence of renal artery stenosis in patients with Coronary Artery Disease (CAD) who underwent Coronary Angiography (CAG). MATERIALS AND METHODS The consecutive CAD patients undergoing CAG and renal angiography were studied from November 2000 to July 2004. The presence of risk factors such as age, hypertension, diabetes, left ventricular function and myocardial infarction were assessed. The degree of arterial stenosis was categorised into mild, moderate and severe and at least 50% narrowing of the arterial lumen was considered as arterial stenosis. Data was analysed by using SPSS 20.0 software. RESULTS Out of 878 patients, the prevalence of RAS was calculated as 33 (3.8%) patients, the majority of them were male (75.9%). Out of 33 patients, 19 (57.6%), 6 (18.2%) and 8 (24.2%) patients were classified as mild, moderate and severe RAS, respectively. Using multiple variables including age, sex, hypertension, diabetes mellitus, multivessel disease and left ventricular dysfunction patients were considered as predictors of RAS. The significant number of a patient had unilateral 18 (54.5%) and 11 (33.3%) bilateral RAS observed from renal angiography. CONCLUSION The present study suggests that the renal angiography in combination with coronary artery angiography in CAD patients provides the opportunity for identification of RAS.