The job of the renal arteries is to transport blood from the aorta to the kidneys. When one or more of these arteries begins to constrict, renal artery stenosis may develop. This condition prevents the kidneys from receiving their necessary supply of oxygenated blood.
The risks of renal artery stenosis include injured kidney tissue and high blood pressure. This increase in blood pressure is often accompanied by worsening kidney function.

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