What is the pathophysiology of midaortic syndrome in renovascular hypertension (RVHT)?

Updated: Dec 01, 2020
  • Author: Rebecca J Schmidt, DO, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Midaortic syndrome

In midaortic syndrome, vascular involvement extends beyond the renal artery. Aortic narrowing is present, often extending from the aortic hiatus to just above the inferior mesenteric artery (IMA). One or both of the renal arteries are usually involved, and the celiac artery and the superior mesenteric artery (SMA) may be narrowed. Midaortic syndrome may result in total renal artery occlusion, with perfusion dependent on collateral circulation. Extensive collateralization from the IMA and a Riolan arcade may exist. Renal artery stenosis is usually bilateral. [7, 8]

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