Renal Artery Stenting
Renal artery stenosis is a relatively common cause of hypertension, but only in certain settings. The incidence of this disorder is probably less than 1 percent in patients with mild hypertension, but rises to as high as 10 to 40 percent in patients with, severe, or refractory hypertension. It is usually caused by Atherosclerosis or Fibromuscular dysplasia Once the diagnosis of unilateral renal artery stenosis is established by vascular imaging (eg, conventional or MR angiography), which should show more than a 75 percent stenosis, three therapeutic options are available: