In Renal angioplasty, a small flexible tube called a catheter can be positioned inside the renal artery. An angioplasty is performed by using a catheter that has a tiny balloon attached to the end. The angioplasty balloon is inflated inside the vessel and presses any plaque (blockage) into the walls of the vessel. Renal artery stenosis a narrowing of one or both of the main arteries supplying the kidney. This causes a decrease in blood flow to 1 or both kidneys. The kidneys filter and remove waste from the blood.
Standard treatment for high blood pressure may be enough if blood pressure can be controlled and the kidneys are functioning well enough.