• World Neurosurg · Jun 2022

    Use of Surpass Streamline Flow Diverter for the Endovascular Treatment of Craniocervical Aneurysms: A Single-Institution Experience.

    • Rebecca L Achey, Robert Winkelman, Lila Sheikhi, Mark Davison, Gabor Toth, Nina Zobenica Moore, and Mark Bain.
    • Department of Neurosurgery, Cleveland Clinic Foundation, Cleveland, Ohio, USA.
    • World Neurosurg. 2022 Jun 1; 162: e281-e287.

    BackgroundFlow diversion has revolutionized endovascular treatment for cerebral aneurysms. The Surpass Streamline flow diverter (SSFD) has shown promise for expanding flow diversion device options for aneurysm treatment. SSFD differs from earlier stents by maintaining high porosity with increased pore density to ensure appropriate flow disruption. Given the delivery system's increased dimension options and potential greater flow-diverting properties, SSFD is poised to extend the anatomic and pathologic reaches of flow diversion therapy.MethodsData pertaining to SSFD-treated aneurysms were gathered retrospectively between 2019 and 2020, including aneurysm location, size, symptoms, complications, and occlusions rates at follow-up. Size was categorized as small (<10 mm), large (10-25 mm), and giant (>25 mm) according to SCENT (Surpass Intracranial Aneurysm Embolization System Pivotal Trial to Treat Large or Giant Wide Neck Aneurysms) criteria. Aneurysm occlusion on follow-up imaging was characterized by Simple Measurement of Aneurysm Residual after Treatment (SMART) grading with adequate occlusion defined as grades 3 and 4. Imaging was performed at time of treatment and 6-month and 1-year follow-up.ResultsThere were 42 aneurysms treated with SSFD throughout the cerebrovascular system: 3 cervical, 4 posterior, and 35 intracranial anterior circulation. Complete occlusion rates at 6 months and 1 year were 48% and 57% with adequate occlusion achieved in 89.6% and 85.7%, respectively. Rates of complete occlusion were higher for small (69%) compared with large (38%) aneurysms.ConclusionsOur data suggest comparable complete occlusion rates compared with SCENT (66.1% vs. 57% in our center) and adequate occlusion rates. Similar occlusion rates to prior studies despite broadened inclusion criteria and diversity of treated aneurysms demonstrate favorable generalizability of flow-diverting technology to a wide array of aneurysmal pathology.Copyright © 2022 Elsevier Inc. All rights reserved.

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