Influence of Different Self-Expanding Stent-Graft Types on Remodeling of the Aortic Neck After Endovascular Aneurysm Repair

Abstract

Only a small number of the patients treated with self-expanding stent-grafts show notable infrarenal aortic neck dilatation, which does not appear to be related to the stent-graft model. Almost all cases of aortic neck dilatation exceeded the percentage of oversizing; less than a third of patients with aortic neck dilatation required therapy.

Clinical outcome and morphologic analysis after endovascular aneurysm repair using the Excluder endograft

“…However, others have reported higher dilatation rates in devices with suprarenal fixation, suggesting that as an additional factor promoting dilatation. [29][30][31][32] Our cohort had few occlusive complications, occurring exclusively in patients with narrow aortic bifurcations, a known risk factor for occlusion. 33 Data for European Collaborators on Stent-Graft Techniques for Aortic Aneurysm Repair (EUROSTAR) and single-center reports further support the good performance of this device in adverse iliac anatomy, 33-35 but this was not directly evaluated in our population.…”

Aortic neck evolution after endovascular repair with TriVascular Ovation stent graft

“…[1][2][3] Current concepts about the reason for this phenomenon remain poorly understood, although it is known that the amount of proximal device oversizing with selfexpanding stent grafts (SESGs) influences neck progression. 4,5 Once deployed, SESGs continue to expand until the nominal diameter is reached, 6 unless tissue resistance limits expansion. 7 It has been reported that when aortic neck dilation occurs, it is related to adverse midterm outcomes.…”

Long-Term Outcomes of Endovascular Repair versus Open Repair of Abdominal Aortic Aneurysm

“…On the other side, a large aneurysm, co-morbidity or previous abdominal surgery would significantly increase the risks of open repair; this situation warrants the use of EVAR. Furthermore, surgeons' learning curve and advances in device technology are considerations in interpreting these results, [12][13][14] even though we did not compare these factors.…”