Renal Artery Stenosis

What is Renal Artery Stenosis?

Renal Artery Stenosis is characterized by the progressive narrowing of at least one of the arteries that supplies blood to the kidneys. The kidneys require good blood flow to properly removetoxins and excess liquid from the bloodstream.

Renal artery stenosis can lead to uncontrollable high blood pressure or renal failure. It can be caused by fatty deposits in the renal arteries, a renal artery or aorta tear or fibromuscular dysplasia.

What are the Symptoms of Renal Artery Stenosis?

A partial renal artery blockage may not produce symptoms. However, as the disease progresses it can cause serious and potentially life-threatening complications. Symptoms of renal artery stenosis may include:

  • Sudden onset high blood pressure
  • Early or late-onset high blood pressure (before 30 or after 55 years of age)
  • High blood pressure that becomes uncontrollable
  • Irregular sounding renal blood flow
  • Gradually decreasing kidney function
  • Water retention
  • Heart failure that doesn’t respond to treatment

How is Renal Artery Stenosis Treated?

The treatment of a renal artery blockage may include high blood pressure control methods. They may include:

  • Lifestyle changes (e.g. diet, exercise, quitting smoking)
  • Diuretics
  • Calcium channel blockers
  • Alpha-beta blockers
  • Beta blockers
  • Diuretics

Other treatments for renal artery blockage may include:

  • Angioplasty and stent implant
  • Renal artery bypass
  • Removal of plaque (endarterectomy)
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Last Reviewed:
October 09, 2016
Last Updated:
August 09, 2017