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Ticagrelor versus clopidogrel dual antiplatelet therapy for unruptured intracranial aneurysms treated with flowdiverter

Journal of Neuroradiology, ISSN: 0150-9861, Vol: 50, Issue: 3, Page: 346-351
2023
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Article Description

Antiplatelet therapy (APT) is a key element limiting the risk of thromboembolic events (TEE) in neuroendovascular procedures, including aneurysm treatment with flowdiverter. Clopidogrel combined with aspirin is the mostly reported dual APT (DAPT). However, resistance phenomenon and intraindividual efficacy fluctuation are identified limitations. In recent years, ticagrelor has been increasingly used in this indication. We compared these two DAPT regimens for intracranial aneurysm treated with flowdiverter. We conducted a multicentric retrospective study from prospectively maintained databases in two high volume centers extracting consecutive patients presenting unruptured intracranial aneurysm treated with flowdiverter and receiving DAPT (May 2015 to December 2019).  Two groups were compared according to their DAPT regimen: “ticagrelor+aspirin” and “clopidogrel+aspirin”. Clopidogrel group was systematically checked with platelet test inhibition before endovascular procedure. The primary endpoint was composite, defined as any thrombo-embolic event (TEE) or major hemorrhagic event occurring the first 6 months during and after embolization 260 patients met our inclusion criteria. Baseline patients and aneurysms characteristics were comparable between groups, except for aneurysm location, median size and pre-treatment modified Rankin scale. No significant difference was observed regarding the primary composite outcome: 11.5% (12/104) in the ticagrelor group versus 10.9% (17/156) in the clopidogrel group ( p  = 1.000). There was also no significant difference in secondary outcomes including TEE (10.5 vs 9.0%; p  = 0.673), major hemorrhage (0.9 vs 1.2%; p  = 0.651) and clinical outcome (at least 1-point mRS worsening during follow up: 6.7% vs 8.3%; p  = 0.813). First-line DAPT with ticagrelor+aspirin seems as safe and effective as clopidogrel+aspirin regimen.

Bibliographic Details

Papaxanthos, Jean; Cagnazzo, Federico; Collemiche, François-Louis; Barreau, Xavier; Radu, Răzvan Alexandru; Gariel, Florent; Derraz, Imad; Gascou, Gregory; Riquelme, Carlos; Ferreira, Ivan; Lefevre, Pierre-Henri; Berge, Jérôme; Costalat, Vincent; Dargazanli, Cyril; Marnat, Gaultier

Elsevier BV

Health Professions; Medicine

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