Pathophysiology of proximal perigraft endoleak following endovascular repair of abdominal aortic aneurysms: a study using a flow model

被引：32

作者：

Albertini, JN ^{[1
]}

Macierewicz, JA ^{[1
]}

Yusuf, SW ^{[1
]}

Wenham, PW ^{[1
]}

Hopkinson, BR ^{[1
]}

机构：

[1] Queens Med Ctr, Dept Vasc Surg, Nottingham, England

来源：

EUROPEAN JOURNAL OF VASCULAR AND ENDOVASCULAR SURGERY | 2001年 / 22卷 / 01期

关键词：

absominal aortic aneurysm; endovascular repair; endoleak; flow model; pathophysiology; stent-graft;

D O I：

10.1053/ejvs.2001.1385

中图分类号：

R61 [外科手术学];

学科分类号：

摘要：

Objective: to design a flow model to determine whether and why increased proximal neck angulation correlates with increased risk of proximal perigraft endoleak (PPE) flow. Methods: a tapered stent-graft (Gianturco stent + Dacron) was deployed with proximal and distal necks made of silicone. The amount of PPE was measured over 30-s periods while the angulation of the proximal neck was increased. Results: PPE flow increased significantly for angulations greater than or equal to 30 degrees. The graft was lifted off the neck wall and gaps between the stent-graft and the neck created. Conclusion: greater neck angulation increased PPE flow. The stent-graft was lifted off the neck and subsequent gaps created. This model could be used to compare available stent-grafts and to test new designs that would improve the seal in angulated necks.

引用

页码：53 / 56

页数：4

共 4 条

[1] Anatomical risk factors for proximal perigraft endoleak and graft migration following endovascular repair of abdominal aortic aneurysms [J].