Renal Artery Stenosis

Renal stenting – Renovascular conditions

Renal artery stenosis (RAS) is the narrowing of one or both arteries that carry blood to the two kidneys.

Renal Artery Stenosis is caused by atherosclerosis, hardening of the kidney arteries. Thus, Renal Artery Stenosis develops when a material called plaque builds up on the inner wall of one or both of the renal arteries. The plaque makes the artery wall hard and narrow. This narrowing reduces or cuts off the blood supply, possibly damaging the kidney. The damaged kidney is less efficient at removing wastes and extra fluid from the blood. This plaque is similar to plaques blocking the arteries supplying the heart, which cause heart attacks, and those blocking arteries supplying the brain, which cause strokes.

Treatment approach for Renal Artery Stenosis

Preventing Renal Artery Stenosis from getting worse
Treating high blood pressure that results from Renal Artery Stenosis
Relieving the blockage of the renal arteries

Angioplasty is a procedure in which a catheter is put into the renal artery, usually through the groin, just as in a conventional angiogram. In addition, for angioplasty, a tiny balloon at the end of the catheter can be inflated to flatten the plaque against the wall of the artery. Then your doctor may position a small mesh tube, called a stent, to keep plaque flattened and the artery open.