What is the role of revascularization in the treatment of renal artery stenosis (RAS)?

Updated: Nov 02, 2020
  • Author: Bruce S Spinowitz, MD, FACP; Chief Editor: Vecihi Batuman, MD, FASN  more...
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All patients with significant (>80%) bilateral stenosis or stenosis in a solitary functioning kidney are candidates for revascularization, regardless of whether they have kidney insufficiency. When kidney insufficiency is present, patients with unilateral stenosis are also possible candidates for revascularization. The criteria are slightly different depending on the presence or absence of kidney insufficiency.

When kidney function is normal or nearly normal, specialists recommend revascularization for prevention of kidney insufficiency if the patient meets the following criteria:

  • The degree of stenosis is more than 80-85%

  • The degree of stenosis is 50-80%, and captopril-enhanced scintigraphy demonstrates an activation of intrarenal renal artery stenosis

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