What degree of renal artery stenosis justifies an attempt at either surgical or radiologic intervention?

Updated: Nov 02, 2020
  • Author: Bruce S Spinowitz, MD, FACP; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Answer

The degree of renal artery stenosis that would justify any attempt at either surgical intervention or radiologic intervention is not known. One study found that when the pressure distal to renal artery stenosis was less than 90% of aortic pressure, renin release from the affected kidney was significantly elevated (renin being measured in the ipsilateral renal vein). This might be useful as a functional measurement of significant renovascular stenosis leading to hypertension and, thus, a marker of greater likelihood of benefit from angioplasty and stenting. [8, 9]


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