Eccentric stent graft compression: An indicator of insecure proximal fixation of aortic stent graft

Purpose: The purpose of this study was to determine whether radiographically demonstrated proximal stent graft contour can be used as a marker for security of proximal neck fixation after endovascular aneurysm repair. Methods: Stent graft structure was examined in 100 consecutive patients with abdom...

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Bibliographic Details
Published in:Journal of vascular surgery 2001-03, Vol.33 (3), p.481-487
Main Authors: Wolf, Yehuda G., Hill, Bradley B., Lee, W.Anthony, Corcoran, Christine M., Fogarty, Thomas J., Zarins, Christopher K.
Format: Article
Language:English
Subjects:
Aortic Aneurysm, Abdominal - diagnostic imaging
Aortic Aneurysm, Abdominal - surgery
Biological and medical sciences
Blood and lymphatic vessels
Blood Vessel Prosthesis Implantation
Cardiology. Vascular system
Diseases of the aorta
Equipment Failure Analysis
Follow-Up Studies
Foreign-Body Migration - diagnostic imaging
Humans
Imaging, Three-Dimensional
Medical sciences
Postoperative Complications - diagnostic imaging
Predictive Value of Tests
Prosthesis Fitting
Risk Factors
Stents
Suture Techniques
Tomography, X-Ray Computed
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Summary:Purpose: The purpose of this study was to determine whether radiographically demonstrated proximal stent graft contour can be used as a marker for security of proximal neck fixation after endovascular aneurysm repair. Methods: Stent graft structure was examined in 100 consecutive patients with abdominal aortic aneurysms who were treated with the stent graft. Stent graft integrity, stent contour, angulation, compression, and position were assessed by use of plain abdominal radiography, and the results were correlated with contrast computed tomography (CT) scanning, clinical findings, and outcomes. Repeated imaging was carried out during follow-up of 3 to 38 (mean, 12) months. Results: Stent graft repair was successful in all 100 patients. No stent fractures were identified. Concentric compression of the proximal portion of the stent graft was visible in 69% of patients and reflected deliberate oversizing of the stent graft at the time of implantation. In 5% of patients, a short eccentric compression deformity of the proximal stent was observed. This finding was associated with an increased risk of stent graft migration (P
ISSN:0741-5214
1097-6809
DOI:10.1067/mva.2001.112322