Kidneys have many jobs to do for the body. One important job is to help keep the blood pressure in normal limits. Another is to balance electrolytes and filter waste products. Kidneys receive almost one third of the body’s blood flow. When a renal artery becomes blocked or narrowed, the body increases blood pressure to try to supply more blood to the kidney. Renal artery stenosis is a build-up of plaque (fatty deposits, and calcium) in the walls of renal arteries that blocks or reduces blood flow to the kidney. This can result in kidney failure.
Smoking, diabetes, high blood pressure, high cholesterol, and family history increase your risk of having renal artery stenosis.
Renal artery disease may be treated by medications, but often times a procedure where a stent is placed in the renal artery is necessary.