Renal Artery Stenting
The renal arteries deliver blood to and from the kidneys. The renal arteries may become clogged or narrowed from a condition known as renal artery stenosis (RAS). Renal artery stenosis can prevent proper blood flow, causing high blood pressure and reduced kidney function. RAS may initially be treated with conservative methods to improve blood pressure and relieve the narrowing in the renal arteries, however if these methods are ineffective, surgery may be necessary to restore blood flow through the affected artery.
Renal artery stenting is a common procedure that is performed to open blocked or narrowed renal arteries. During the procedure, a catheter is inserted through an artery to the affected area. A tiny balloon is inserted through the catheter and is gently inflated to flatten the plaque build up against the artery wall. A stent, or a small mesh or wire tube, is then positioned inside the artery to maintain the expanded position and keep the artery open.
After the renal artery stenting procedure, most patients experience improved blood flow and restored kidney function. While renal artery stenting is considered a safe and effective treatment for renal artery stenosis, there are risks which may include bruising, bleeding and damage to the kidneys. After a renal artery stenting procedure, there is a possibility that the renal arteries may become clogged again.