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Case Reports
. 2000 Apr;21(4):732-8.

Endovascular stenting for carotid artery stenosis: preliminary experience using the shape-memory- alloy-recoverable-technology (SMART) stent

C C Phatouros  1 , R T Higashida, A M Malek, P M Meyers, T E Lempert, C F Dowd, V V Halbach
Affiliations
Case Reports

Endovascular stenting for carotid artery stenosis: preliminary experience using the shape-memory- alloy-recoverable-technology (SMART) stent

C C Phatouros et al. AJNR Am J Neuroradiol. 2000 Apr.

Abstract

We describe our initial clinical experience using the newly available self-expanding, Nitinol, shape-memory-, alloy-recoverable-technology (SMART) stent in treating carotid artery occlusive disease. Five stents were used in four carotid arteries in four consecutive patients with carotid stenosis of at least 70%. Technical success (<20% residual stenosis) was achieved in all cases. No procedural complications specifically related to use of the SMART stent were encountered. All patients remained symptom-free, with no evidence of transient ischemic attacks or new strokes during an average follow-up period of 6 months. Excellent performance of the SMART stent for the endovascular treatment of carotid artery stenosis has been shown based on our early experience. Validation with greater numbers and longer-term follow-up is required. The specific technical characteristics, potential advantages, and disadvantages of this stent are discussed and compared with other currently used carotid artery stents.

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Figures

<sc>fig</sc> 1.
fig 1.
Anteroposterior views of the left carotid artery bifurcation. A, Acute dissection involving the proximal internal carotid artery. The true lumen is severely narrowed (arrow), with early pseudoaneurysm formation. B and C, Position of the first SMART stent, the inferior margin of which projects across the internal carotid artery lumen (small arrow). The long thin arrow indicates where the catheters were temporarily caught in the stent interstices (see Discussion). D and E, Final appearances after deployment of a second SMART stent, inferiorly and overlapping the first. The second stent crosses the external carotid artery origin, which nonetheless continues to opacify normally.
<sc>fig</sc> 2.
fig 2.
Lateral views of the left carotid artery bifurcation. A, Approximately 70% short-segment, circumferential, atherosclerotic stenosis of the internal carotid artery origin (arrow). B, Appearances after deployment of a SMART stent, which crosses the origin of the external carotid artery. Note stenosis of the external carotid artery origin as a consequence of stenting across the carotid bifurcation. This is usually of no clinical significance. fig 3. Lateral views of the right carotid artery bifurcation. A, Severe (approximately 90%), long-segment, atherosclerotic stenosis of the common and internal carotid arteries. There is minimal opacification of the external carotid artery (arrow). B, Appearances after deployment of a SMART stent within the common carotid artery.
<sc>fig</sc> 4.
fig 4.
Ipsilateral oblique views of the left carotid artery. A, Severe short-segment, circumferential, atherosclerotic stenosis of the internal carotid artery origin (arrow). B, Appearances after deployment of a SMART stent within the internal carotid artery.
<sc>fig</sc> 5.
fig 5.
Photograph of the SMART stent shows segmented geometry and flared margins.
See this image and copyright information in PMC

References

    1. The North American Symptomatic Carotid Endarterectomy Trial Collaborators. Beneficial effect of carotid endarterectomy in symptomatic patients with high-grade carotid stenosis. N Engl J Med 1991;325:445-453 - PubMed
    1. The European Carotid Surgery Trialists' Collaborative Group. Randomised trial of endarterectomy for recently symptomatic carotid stenosis: final results of the MRC European Carotid Surgery Trial (ECST). Lancet 1998;351:1379-1387 - PubMed
    1. Mayberg MR, Wilson SE, Yatsu F, et al. Carotid endarterectomy and prevention of cerebral ischemia in symptomatic carotid stenosis: Veterans Affairs Cooperative Studies Program 309 Trialist Group. JAMA 1991;266:3289-3294 - PubMed
    1. Barnett HJ, Taylor DW, Eliasziw M, et al. Benefit of carotid endarterectomy in patients with symptomatic moderate or severe stenosis: North American Symptomatic Carotid Endarterectomy Trial Collaborators. N Engl J Med 1998;339:1415-1425 - PubMed
    1. The Executive Committee for the Asymptomatic Carotid Atherosclerosis Study. Endarterectomy for asymptomatic carotid artery stenosis. JAMA 1995;273:1421-1428 - PubMed

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