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Ann Vasc Surg. 2018 Oct;52:312.e7-312.e12. doi: 10.1016/j.avsg.2018.02.039. Epub 2018 Jun 9.

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

Author information

1
Division of Vascular Surgery, Department of Surgery, Stanford University, Stanford, CA.
2
Division of Vascular Surgery, Department of Surgery, Stanford University, Stanford, CA. Electronic address: cpc@stanford.edu.

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.

PMID:
29775657
PMCID:
PMC6131040
[Available on 2019-10-01]
DOI:
10.1016/j.avsg.2018.02.039
[Indexed for MEDLINE]

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