Changes in Renal-Mesenteric Duplex Ultrasound Velocities after Fenestrated and Branched Endovascular Aortic Aneurysm Repair.

Stent placement in nonstenotic renal and mesenteric vessels during FB-EVAR is not associated with significant increase in PSVs at the origin and proximal segments of the target vessels. While there is a modest but significant increase in velocity measurements in the mid segment of the stented vessel, this is not clinically significant. Furthermore, PSVs in stented renal and mesenteric arteries were well below the threshold for significant stenosis in native vessels. These values provide a baseline or benchmark for expected PSVs following renal-mesenteric stenting during FB-EVAR.