Midterm results of stent-craft repair for thoracic aortic aneurysms: Computed tomographic evaluation

Citation
I. Yamazaki et al., Midterm results of stent-craft repair for thoracic aortic aneurysms: Computed tomographic evaluation, ARTIF ORGAN, 25(3), 2001, pp. 223-227
Citations number
7
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Research/Laboratory Medicine & Medical Tecnology
Journal title
ARTIFICIAL ORGANS
ISSN journal
0160-564X → ACNP
Volume
25
Issue
3
Year of publication
2001
Pages
223 - 227
Database
ISI
SICI code
0160-564X(200103)25:3<223:MROSRF>2.0.ZU;2-1
Abstract
Midterm observation of endovascular surgery using a fabric-covered stent gr aft for thoracic aortic aneurysms is discussed with postoperative follow-up findings based on regularly performed thoracic computed tomography (CT). F rom 1996 to 1999, 20 patients with thoracic aortic aneurysm underwent stent -graft placement in our hospital. One year follow-up CT results after place ment were obtained for 17 patients. The CT scans found that there were both thrombosis and size reduction of aneurysm in 8 patients (46%), thrombosis without size reduction in 2 (13%), a new ulcerlike projection (ULP) in 3 (1 9%), persistent minor endoleakage in 2 (13%), a new endoleak in 1 (6%), and a recurrent endoleak from intercostal arteries in 1 (6%). The new ULP form ation seemed to be a peculiar problem stemming from an intimal injury cause d by edges of the stent. Therefore, we recently adopted a new spiral stent instead of the previous stent to avoid the injury. The new endoleak suggest ed that aneurysmal thrombosis without size reduction could cause the aneury sm to develop recurrent endoleaks. From these findings, we concluded that m idterm observation of stent-graft repair for thoracic aortic aneurysms did not give satisfactory results. In order to improve the results of endovascu lar surgery using stent-grafts, we need to develop safer stent grafts with a reliable design to prevent endoleaks and to avoid intimal injury of the a orta. We also hope to develop effective technologies that can accelerate or ganization of thrombus in the aortic aneurysm after stent-graft placement.