Clinical significance of renal artery angiography in patients with coronary artery disease

Objective To explore the risk factors and incidence of renal artery stenosis(RAS) in patients with coronary artery disease (CAD) and the importance of renal angiography which should be performed soon after coronary artery angiography Methods Renal angiography was performed immediately after coronary artery angiography in 169 patients with CAD,including 76 males,93 females, age of the patients were(67±9)years old Comorbidities were suspected hypertension (n=80), diabetes mellitus ( n=27), hyperlipidemia (n=36), hypopotassium ( n=11) and preoperative renal insufficiency (Cr 132 μmol/L, n=17) Results Incidence of RAS was 19 5%(33/169) in 169 patients and 27 1%(19/70) in patients with CAD who were identified by coronary artery angiography Fourteen cases with renal artery stenosis were found in 99 cases with normal coronary angiography (14 1%,14/ 99) Incidence of RAS in patients with CAD was higher than that in patients with normal coronary artery (27 1% vs 14 1%, P 0 05) In 70 patients with CAD, incidence of RAS with three vessel lesions was significantly higher than that with one or two vessel lesions Conclusions Incidence of RAS is higher in patients with CAD Renal arteriography is necessary to be performed in patients with coronary artery disease for the early detection of the potential ischemic renal disease