Stabilization of the Abdominal Aorta During the Cardiac Cycle with the Sac-Anchoring Nellix Device

Annals of Vascular Surgery
Nathan K ItogaChristopher P Cheng

Abstract

The Nellix device uses polymer-filled endobags to stabilize the abdominal aortic aneurysm (AAA) sac which is described as endovascular aneurysm sealing (EVAS). We analyzed cardiac-gated computed tomography angiography scans of repaired AAA with EVAS in 4 patients to evaluate the geometry and cardiac pulsatility-induced deformation. Graft translation and aortic curvature changes were found to be minimal during the cardiac cycle. The mean ± standard deviation changes in renal-aorta angles (1.0 ± 0.9°) were less than the changes in the superior mesenteric artery-aorta angle (4.0 ± 2.1°) (P < 0.01), during the cardiac cycle, demonstrating greater stabilization of the visceral branches closer to the device. These findings confirm stabilization of the abdominal aorta during the cardiac cycle using EVAS.

References

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Nov 1, 2016·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Marwan YoussefBernhard Dorweiler

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Citations

Jun 19, 2019·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Christopher P ChengAndrew Holden

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