Frequency and predictors of renal artery stenosis in patients with coronary artery disease

ABSTRACT

Renal artery stenosis [RAS] is a common finding in patients undergoing coronary angiography. We designed this study to look for the frequency and any predictors of renal artery stenosis in patients with coronary artery disease [CAD]. A total of 201 consecutive patients with CAD confirmed by coronary angiography underwent an abdominal aortogram in the same sitting to screen for RAS. Patient demographics and co-morbidities were analysed for any association with RAS. Forty-one of the patients were female [20.4%]; ninety patients were hypertensive [44.8%]; 49 patients [24.4%] were smokers; 19 patients [9.5%] had renal insufficiency; 88 patients [43.8%] had high cholesterol levels; 44 patients [21.9%] were diabetic. Thirty-two patients [15.9%] had single coronary artery disease, 59 patients [29.4%] had two vessel disease, and 110 patients [54.7%] had three vessel disease. Significant renal artery stenosis [>/= 0.50% stenosis] was present in 26 patients [12.9%]. Among the variables studied, only female gender was found to be associated with a higher frequency of renal artery stenosis [24.39% vs 10.0%, p=0.01]. The frequency of renal artery stenosis in patients with coronary artery disease is 12.9%. Female gender is associated with a higher frequency of renal artery stenosis in patients with CAD