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Endovascular grafting for abdominal aortic aneurysms
M D'Ayala1, L H Hollier, M L Marin
1Department of Surgery, Mount Sinai Medical Center, New York, New York, USA.
Insights
Endovascular grafts show promise but face challenges like complex procedures, access difficulties, and potential complications. Further research and technological advancements are needed for widespread adoption in vascular surgery.
Area of Science:
- Vascular Surgery
- Interventional Radiology
- Medical Device Technology
Background:
- Endovascular grafts have demonstrated initial success in complex patient cases.
- Significant challenges and limitations persist despite these successes.
Purpose of the Study:
- To review the current challenges and complications associated with endovascular graft procedures.
- To highlight areas requiring further research and technological development.
Main Methods:
- Review of existing literature on endovascular graft outcomes and complications.
- Analysis of procedural difficulties, graft deployment issues, and patient-specific factors.
Main Results:
- Procedures are time-consuming, complex, and require multidisciplinary teams.
- Difficult vascular access, inadequate deployment, and graft failure are significant risks.
- Potential complications include arterial rupture, graft migration, occlusion, and aneurysm rupture.
Conclusions:
- Endovascular grafts face numerous hurdles, including technical complexity and potential adverse events.
- Radiation exposure and contrast load are additional concerns.
- Continued experience and technological innovation are essential for broader clinical application.
Abstract:
Despite the initial success of endovascular grafts in a very difficult patient population, many problems remain. These procedures are often time-consuming and quite complicated, requiring the close cooperation of an experienced team of vascular surgeons and interventional radiologists. Access may be difficult through occluded, stenotic, and tortuous vessels. Inadequate graft deployment may result in arterial rupture or graft migration, which could potentially lead to acute occlusion of the renal or iliac arteries. Occlusion of the inferior mesenteric artery may result in ischemic colitis. Also, endovascular grafts may fail to exclude an aneurysm from systemic arterial blood pressure, not protecting the patient against impending rupture, and embolization and thrombosis are ever-present dangers. Concerns have been raised regarding radiation exposure and intravenous contrast loads used during these procedures. Clearly, more experience must be gained and technologic advancements made before the use of these devices becomes commonplace, something that may not be too far off in the future.