Frequency and Predictors of Renal Artery Stenosis in Hypertensive Patients Undergoing Coronary Angiography

Abstract

Renal artery stenosis (RAS) and coronary artery disease share common risk factors. We investigated the frequency and predictors of RAS among hypertensive patients who underwent elective coronary angiography. A total of 832 hypertensive patients underwent coronary and renal angiography at the same session. Renal artery stenosis was classified as mild, moderate, or severe. The study population consisted of 4 groups; 71.1% with normal renal arteries, 12.5% with mild, 8.9% with moderate, and 7.5% with severe RAS. The prevalence of significant (≥50%) RAS was 16.3%. The Gensini score showed a stepwise rise with increasing severity of RAS. Age, duration of hypertension, estimated glomerular filtration rate, Gensini score, and multivessel disease were independent predictors for the presence of RAS. Hypertensive patients with those risk factors might need detailed investigation for RAS which may affect their prognosis.