• Cardiovasc Intervent Radiol · Jul 2020

    Meta Analysis

    Stent-Assisted Coiling of Intracranial Aneurysms Using a Nitinol-Based Stent (Neuroform Atlas): A Systematic Review and Meta-analysis.

    • Raymond Pranata, Emir Yonas, Hadrian Deka, Rachel Vania, and Julius July.
    • Faculty of Medicine, Universitas Pelita Harapan, Jl. Jend. Sudirman No. 20, Tangerang, Banten, 15810, Indonesia. raymond_pranata@hotmail.com.
    • Cardiovasc Intervent Radiol. 2020 Jul 1; 43 (7): 1049-1061.

    ObjectiveThe aim of this systematic review and meta-analysis was to synthesize the latest evidence on the efficacy and safety of Neuroform Atlas-assisted coiling of intracranial aneurysms.MethodsWe performed a comprehensive search for articles that assessed the efficacy and safety of Neuroform Atlas-assisted coiling of intracranial aneurysms. The outcome measurement was adequate occlusion, defined as Raymond-Roy Class I (RR1) + Raymond-Roy Class II (RR2) by previous studies.ResultsA total of 557 patients (568 aneurysms) from 13 studies were included. The rate of adequate occlusion after the procedure was 88% (83-94%, I2: 72.21%), and the rates of RR1 and RR2 were 68% (60-77%, I2: 81.87%) and 21% (15-27%, I2: 66.10%), respectively. The adequate occlusion rate at 6 months was 90% (81-99%, I2: 58.04%) and 93% (91-96%, I2: 0%) at the end of a mean of 9.03 ± 1.03 months of follow-up. Periprocedural complications occurred in 35 patients [5% (3-8%, I2: 21.28%)]. Subgroup analysis of unruptured aneurysms showed that the rates of adequate occlusion were 85% (78-93%), 90% (79-100%) (6-month follow-up), and 93% (90-96%) (at the end of follow-up). For the wide-necked aneurysm subgroup, the rate of adequate occlusion was 86% (80-93%) and was 93% (89-97%) at the end of follow-up. Meta-regression showed that initial adequate occlusion was influenced by mean aneurysm neck size (p = 0.034).ConclusionNeuroform Atlas-assisted coiling is associated with an initial adequate occlusion rate of 88% and a periprocedural complication rate of 6%. The rate of initial adequate occlusion was 85% in unruptured aneurysms and 86% in wide-necked aneurysms.Level Of EvidenceLevel 2, Systematic review of non-randomized and single-arm studies.

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