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Goertz, Lukas; Dorn, Franziska; Kraus, Bastian; Borggrefe, Jan; Forbrig, Robert; Schlamann, Marc; Liebig, Thomas; Turowski, Bernd and Kabbasch, Christoph (2019): Improved Occlusion Rate of Intracranial Aneurysms Treated with the Derivo Embolization Device: One-Year Clinical and Angiographic Follow-Up in a Multicenter Study. In: World Neurosurgery, Vol. 126, E1503-E1509

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Abstract

OBJECTIVE: The Derivo Embolization Device (DED) is a novel flow-diverter stent consisting of a flexible structure and a surface modification that aims to reduce thrombogenicity. Here, we report 1-year clinical and angiographic follow-up results of the second-generation DED for the treatment of intracranial aneurysms. METHODS: This is a retrospective study of 59 consecutive patients (mean age: 53 years, 81% women) treated with the DED for 59 aneurysms (mean size: 8.1 mm) between November 2015 and February 2018 at 3 German tertiary care centers. We evaluated the rate of ischemic stroke, functional outcome, and angiographic results during a 1-year follow-up period. RESULTS: Deployment of the DED was successful in all cases. Adverse events were observed in 6 procedures (10.2%), of which 2 were symptomatic (3.4%). No delayed ischemic or hemorrhagic events occurred during the 1-year follow-up and there were no deaths. Permanent morbidity due to in-stent thrombosis and consecutive ischemic stroke occurred in 1 patient (1.7%). Complete (O'Kelly-Marotta grading scale D) and favorable (O'Kelly-Marotta grading scale C+D) aneurysm occlusion was obtained in 70.5% (31/44) and 88.7% (39/44) at 6 months and 82.8% (24/29) and 100% (29/29) at 12 months, respectively. CONCLUSIONS: Our results demonstrate that treatment of intracranial aneurysms with the DED is associated with low rates of ischemic complications and adequate aneurysm occlusion at 1-year follow-up.

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