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Liang F, Hu DY, Wu MY, et al. The incidence of renal artery stenosis in the patients referred for coronary artery bypass grafting. Indian J Nephrol. 2012;22(1):13-7doi: 10.4103/0971-4065.91181.
Liang, F., Hu, D. Y., Wu, M. Y., Li, T. C., Tang, C. Z., Wang, J. Y., & Lu, C. L. (2012). The incidence of renal artery stenosis in the patients referred for coronary artery bypass grafting. Indian journal of nephrology, 22(1), 13-7. https://doi.org/10.4103/0971-4065.91181
Liang, F, et al. "The incidence of renal artery stenosis in the patients referred for coronary artery bypass grafting." Indian journal of nephrology vol. 22,1 (2012): 13-7. doi: https://doi.org/10.4103/0971-4065.91181
Liang F, Hu DY, Wu MY, Li TC, Tang CZ, Wang JY, Lu CL. The incidence of renal artery stenosis in the patients referred for coronary artery bypass grafting. Indian J Nephrol. 2012 Jan;22(1):13-7. doi: 10.4103/0971-4065.91181. PMID: 22279337; PMCID: PMC3263057.
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Indian J Nephrol. 2012 Jan;22(1):13-7. doi: 10.4103/0971-4065.91181.

The incidence of renal artery stenosis in the patients referred for coronary artery bypass grafting.

Indian journal of nephrology

F Liang, D Y Hu, M Y Wu, T C Li, C Z Tang, J Y Wang, C L Lu

Affiliations

  1. Department of Cardiology, Daxing Hospital, Capital University of Medical Science, Beijing, People's Republic of China.

PMID: 22279337 PMCID: PMC3263057 DOI: 10.4103/0971-4065.91181

Abstract

Multivessel coronary disease or peripheral arterial disease is the clinical clue to diagnosis of renal artery stenosis (RAS). RAS is considered equivalent to coronary artery disease in terms of cardiovascular risk. In this study, we evaluated the incidence of RAS in the patients who were proposed to undergo coronary artery bypass grafting (CABG). Diagnostic evaluations of coronary arteriography and renal artery angiography were performed during the same procedure; the patients who were proposed for CABG in terms of CAD anatomy and clinical manifestation were enrolled. RAS was evaluated and a diameter stenosis of ≥50% was considered as significant RAS; significant RAS patients were divided into five groups. The five groups of RAS were as follows: (1) unilateral RAS ≥50-70%, (2) unilateral RAS ≥70%, (3) bilateral RAS ≥50-70%, (4) one-renal-artery stenosis ≥50-70%, contralateral RAS ≥70%, and (5) bilateral renal artery stenosis ≥70%. A total of 151 patients were enrolled, and RAS (≥50% stenosis in either or both renal arteries) was identified in 47.02% (71/151) patients. Unilateral RAS ≥50-70% was identified in 16.6% (25/151) patients, unilateral RAS ≥70% in 4.6% (7/151) patients, bilateral RAS ≥50-70% in 7.9% (12/151) patients, one-renal-artery stenosis ≥50-70% and contralateral RAS ≥70% in 7.9% (12/151) patients, and bilateral RAS ≥70% was in 9.9%(15/151) patients. The incidence of RAS was 29.03% (18/62) in patients aged ≤60 years, 60% (36/60) in patients aged >60 and ≤70 years, and 58.62% (17/29) in patients aged >70 years. The incidence of RAS was significantly higher in patients aged >60 - ≤70, and >70 years than patients aged ≤60 years (P = 0.001 and P = 0.007, respectively). There was a trend that the incidence of RAS in patients with hypertension [HTN, 50.40% (64/127)] was higher than those without HTN (29.17%, 7/24), with P = 0.056. The incidence of RAS was 47.02% in patients who were proposed for CABG; bilateral RAS of ≥70% was 9.9%. Older age and HTN were associated with RAS in patients who were referred for CABG. This study indicates that the incidence of RAS was high in the patients referred for CABG, and the renal function should be taken care of.

Keywords: Coronary arteriography; coronary artery bypass grafting; coronary heart disease; renal artery stenosis

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