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• W1987588189 abstract "BackgroundStents are increasingly used in the endovascular treatment of intracranial aneurysms. We studied the effects of stenting and endothelial denudation on aneurysm and branch vessel occlusion.MethodsBilateral lingual bifurcation venous pouch aneurysms were created in eight dogs, surgically scraping the aneurysmal endothelial lining on one side. Both arteries were immediately stented using balloon-expandable stents. In four other dogs, a wide-neck carotid bifurcation aneurysm was created, with the vein pouch denuded or not (n = 2 each), followed by immediate stenting. Results were compared using angiography and pathology at 10 days (n = 2), 10 (n = 8), and 20 weeks (n = 2). Branch occlusion between initial and final angiograms was recorded. Pathological evaluation of aneurysms was studied, with attention to neointima formation at the aneurysm ostium and around branch vessel origins.ResultsAll stented and denuded lingual aneurysms were obliterated compared with two of eight lingual aneurysms that were stented alone (P = .007). None of the carotid bifurcation aneurysms became obliterated (0/4), but denuded aneurysms showed partial thrombosis (2/2). Of 68 total stent-covered branches, 5 (7%) were occluded and 17 (27%) had altered angiographic flow.ConclusionsStenting led to suboptimal results in the presence of an intact endothelial layer. Endothelial denudation can promote aneurysm occlusion when combined with stenting. Stents are increasingly used in the endovascular treatment of intracranial aneurysms. We studied the effects of stenting and endothelial denudation on aneurysm and branch vessel occlusion. Bilateral lingual bifurcation venous pouch aneurysms were created in eight dogs, surgically scraping the aneurysmal endothelial lining on one side. Both arteries were immediately stented using balloon-expandable stents. In four other dogs, a wide-neck carotid bifurcation aneurysm was created, with the vein pouch denuded or not (n = 2 each), followed by immediate stenting. Results were compared using angiography and pathology at 10 days (n = 2), 10 (n = 8), and 20 weeks (n = 2). Branch occlusion between initial and final angiograms was recorded. Pathological evaluation of aneurysms was studied, with attention to neointima formation at the aneurysm ostium and around branch vessel origins. All stented and denuded lingual aneurysms were obliterated compared with two of eight lingual aneurysms that were stented alone (P = .007). None of the carotid bifurcation aneurysms became obliterated (0/4), but denuded aneurysms showed partial thrombosis (2/2). Of 68 total stent-covered branches, 5 (7%) were occluded and 17 (27%) had altered angiographic flow. Stenting led to suboptimal results in the presence of an intact endothelial layer. Endothelial denudation can promote aneurysm occlusion when combined with stenting." @default.
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• W1987588189 date "2007-06-01" @default.
• W1987588189 modified "2023-10-18" @default.
• W1987588189 title "The effects of stenting and endothelial denudation on aneurysm and branch occlusion in experimental aneurysm models" @default.
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• W1987588189 doi "https://doi.org/10.1016/j.jvs.2007.02.060" @default.
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