Renal Artery Intervention - an Invasive Radiologist's Approach

Area of Science:

• Cardiovascular Medicine
• Nephrology
• Vascular Surgery

Background:

• Renal artery stenosis (RAS) due to atherosclerosis is a prevalent condition in the elderly.
• It is a progressive disease that can cause renovascular hypertension and end-stage renal disease.
• Atherosclerotic renal arteries are amenable to endovascular interventions like angioplasty and stenting.

Purpose of the Study:

• To evaluate the efficacy of angioplasty and stenting in treating atherosclerotic renal artery stenosis.
• To assess the potential for reversing renal functional impairment caused by ischemic nephropathy.
• To address the gap between technical success and clinical benefits in revascularization procedures.

Main Methods:

• Review of minimally invasive endovascular techniques for renal artery stenosis.
• Comparison of technical success rates between angioplasty/stenting and surgical revascularization.
• Analysis of clinical outcomes and patient benefits following revascularization.

Main Results:

• Minimally invasive angioplasty and stenting achieve technical success rates comparable to surgical revascularization.
• Revascularization can reverse chemically induced renal functional impairment and treat ischemic nephropathy.
• A well-established role exists for angioplasty in managing renovascular hypertension.

Conclusions:

• Angioplasty and stenting are effective technical treatments for atherosclerotic renal artery stenosis.
• Ischemic nephropathy secondary to RAS is increasingly recognized as a treatable condition.
• Further research is needed to bridge the disparity between technical success and demonstrable clinical benefits.