FREQUENCY AND PREDICTORS OF RENAL ARTERY STENOSIS IN PATIENTS WITH CORONARY ARTERY DISEASE

S. Sadiq Shah, Lubna Noor, Shah Sawar, Zahid Aslam Awan, Muhammad Hafeezullah, Sher Bahadar Khan

Abstract


Background: 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). Methods: 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. Results: 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 (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). Conclusions: 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.
Keywords: Renal Artery Stenosis, Coronary Artery Disease, Atherosclerosis

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