Graft Distortion After Endovascular Repair of Abdominal Aortic Aneurysm: Association with Sac Morphology and Mid-Term Complications |
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Authors: | Derek Alan Gould Richard David Edwards Richard Gregory McWilliams Peter Christopher Rowlands Janis Martin Donagh White Simon Fear Ali Bakran John Brennan Geoffrey Gilling-Smith Peter Lyon Harris |
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Affiliation: | (1) Department of Interventional Radiology, Royal Liverpool Hospital, Prescot Street, Liverpool L7 8XP, UK, GB;(2) Radiology Department, Gartnavel Hospital, Glasgow G12 OYG, UK, GB;(3) Department of Vascular Surgery, Royal Liverpool Hospital, Prescot Street, Liverpool L7 8XP, UK, GB;(4) Statistician, Roy Castle ICLCR, London Road, Liverpool L3 9TA, UK, GB |
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Abstract: | Purpose: To investigate the incidence, significance, and mechanism of stent-graft distortion after endovascular repair (EVR) of abdominal aortic aneurysm. Methods: EVR of abdominal aortic aneurysm was performed in 51 cases (49 modular, bifurcated; 2 tube). Thirty-two patients were followed for 6 or more months and had equivalent baseline and follow-up images which could be used to determine changes in graft configuration. Sac dimensions were measured using computed tomographic (CT) images and graft-related complications were recorded. Results: Amongst 32 patients evaluated on follow-up, there was graft distortion in 24. Distorted grafts were significantly (p= 0.002) associated with sac diameter reduction (mean 5 mm) and sac length reduction (mean 8.1 mm). All graft-related complications occurred in the limbs of eight distorted grafts, with a mean reduction of sac length in this group of 7.8 mm on reformatted CT images. Conclusion: There was a highly significant association between graft distortion and limb complications, and reduced sac dimensions. |
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Keywords: | : Stent-graft, distortion— Aneurysm— Morphology— Complications |
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