Renal Artery Stenosis


Renal artery stenosis a narrowing of one or both of the main arteries supplying the kidney. This causes a decrease in blood flow to one or both kidneys. The kidneys filter and remove waste from the blood.
The Kidney and its Main Blood Vessels
Copyright © Nucleus Medical Media, Inc.


Each kidney is capable of regulating the body’s blood pressure to assure that each organ has an adequate supply of oxygenated blood. Stenosis activates a cascade of hormones known as the renin-angiotensin system. This pattern increases blood pressure. High blood pressure is a leading cause of stroke and heart attack. The two most common causes of renal artery stenosis are:
  • Atherosclerosis—Fatty plaque builds up in the arteries and blocks blood flow to the kidneys. This occurs mainly in men over 50 years old.
  • Fibromuscular dysplasia—An inherited disorder where muscle and fibrous tissue of the renal artery wall thicken and harden into rings that block blood flow to the kidneys. This occurs mainly in young women in their 30s.

Risk Factors

Factors that may increase your chance of renal artery stenosis include:

leave comments
Did you like this? Share with your family and friends.
Related Topics:
Current Research From Top Journals

Music May Improve Sleep Quality in Adults with Insomnia
October 2015

Insomnia can make your days miserable and a cure can be hard to find. There are some medications but there is some worry with side effects and the potential for addiction. Music is side effect free and according to this study may help you find sleep.

dot separator
previous editions

CPAP May Help Older Adults with Obstructive Sleep Apnea
September 2015

Water Before Meals May Promote Weight Loss
August 2015

Fecal Transplants Induce Ulcerative Colitis Remission
July 2015

dashed separator


Our Free Newsletter
click here to see all of our uplifting newsletters »