Chapter 79

Renal Artery Interventions

First published: 06 May 2022

Summary

Renal artery stenosis (RAS) is narrowing of the renal arteries, most often occurring in the main renal artery. Atherosclerotic renal artery stenosis (ARAS) is caused by atherosclerotic plaque in the renal artery wall and is a chronic inflammatory process affected by multiple factors. Duplex ultrasonography, computed tomographic angiography (CT angiography, or CTA), and magnetic resonance angiography (MRA) are recommended by guideline as screening tests to establish the diagnosis of RAS. While balloon angioplasty is the standard interventional treatment for FMD, for ARAS there has been considerable debate over the past several decades about which treatment modality is better when considering medical therapy versus stenting. The direct goal of renal artery intervention is to obtain the optimal patency of the artery while minimizing the risk of atheroembolization, renal artery dissection, and other complications. The chapter describes the techniques for stenting ostial ARAS, as these are the most common.

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