Renal (Kidney) Artery Stenosis
Description
A narrowing in the diameter of the renal arteries. The decreased blood flow to the kidneys may lead to kidney failure and high blood pressure (hypertension). The main cause of the narrowing is atherosclerosis, other more rare causes include inflammation of the arteries (vasculitis) and dissection of the artery (a tearing of the vessel).
Symptoms
There are usually no symptoms. Elevated blood pressure that is difficult to control can be an early sign.
Tests
A history and physical exam will be performed. Tests to establish the diagnosis and define the damage done may include: radionuclide renogram, renal arteriogram, renal perfusion scintiscan, urine concentration test. A renal artiogram shows the exact location of the narrowing.
- CBC
- Chem 12
- UA
- CT Scan
- MRI
- Ultrasound
Treatment
Treatment depends on the severity of the condition. Options to increase blood flow to the kidney include balloon angioplasty and/or surgery. Blood pressure medications are given to control the hypertension. For additional information contact the National Kidney and Urologic Diseases Information Clearinghouse at: http://www.kidney.niddk.nih.gov or call (800)891-5390.
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