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Titolo:
Assessment of a polyester-covered nitinol stent in the canine aorta and iliac arteries
Autore:
Castaneda, F; Ball-Kell, SM; Young, K; Li, RZ;
Indirizzi:
Univ Illinois, Coll Med, Dept Radiol, Peoria, IL 61656 USA Univ Illinois Peoria IL USA 61656 Med, Dept Radiol, Peoria, IL 61656 USA
Titolo Testata:
CARDIOVASCULAR AND INTERVENTIONAL RADIOLOGY
fascicolo: 5, volume: 23, anno: 2000,
pagine: 375 - 383
SICI:
0174-1551(200009/10)23:5<375:AOAPNS>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
CRAGG-ENDOPRO-SYSTEM; PERCUTANEOUS TREATMENT; ENDOVASCULAR GRAFT; VASCULAR GRAFTS; ANEURYSMS; PLACEMENT; FEASIBILITY; PROSTHESES; STENOSIS; SHEEP;
Keywords:
covered stents; animal model, vascular; stenosis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
41
Recensione:
Indirizzi per estratti:
Indirizzo: Castaneda, F Univ Illinois, Coll Med, Dept Radiol, 1 Illini Dr, Peoria, IL61656 USA Univ Illinois 1 Illini Dr Peoria IL USA 61656 a, IL 61656 USA
Citazione:
F. Castaneda et al., "Assessment of a polyester-covered nitinol stent in the canine aorta and iliac arteries", CARDIO IN R, 23(5), 2000, pp. 375-383

Abstract

Purpose: To evaluate the patency and healing characteristics of a woven polyester fabric-covered stent in the canine model. Methods: Twenty-four self-expanding covered stents were placed in the infrarenal aorta and bilateral common iliac arteries of eight dogs and evaluated at 1 (n = 2), 3 (n = 2), and 6 (n = 4) months. Stent assessment was done using angiography prior to euthanasia, and light and scanning electron microscopy. Results: Angiographically, just prior to euthanasia, 8 of 8 aortic and 14 of 16 iliac endovascular covered stents were patent. Histologically, the stented regions showed complete endothelialization 6 months after graft implantation. A neointima had formed inside the stented vessel regions resultingin complete encasement of the fabric-covered stent by 3 months after graftimplantation. Medial compression with smooth muscle cell atrophy was present in all stented regions. Explanted stent wires, examined by scanning electron microscopy, showed pitting but no cracks or breakage. Conclusion: The covered stent demonstrated predictable healing and is effective in preventing stenosis in vessels 10.0 mm or greater in diameter but does not completely preclude stenosis in vessels 6.0 mm or less in diameter.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 22:23:23