Seizures after Ischemic Stroke: A Matched Multicenter Study

Carolina Ferreira-Atuesta, Nico Döhler, Barbara Erdélyi-Canavese, Ansgar Felbecker, Philip Siebel, Natalie Scherrer, Giulio Bicciato, Juliane Schweizer, Lucia Sinka, Lukas L. Imbach, Mira Katan, Laura Abraira, Estevo Santamarina, José Álvarez-Sabín, Michael Winklehner, Tim J. von Oertzen, Judith N. Wagner, Gian Luigi Gigli, Anna Serafini, Francesco JanesGiovanni Merlino, Mariarosaria Valente, Giorgia Gregoraci, Julian Conrad, Stefan Evers, Piergiorgio Lochner, Frauke Roell, Francesco Brigo, Carla Bentes, Ana Rita Peralta, Teresa Pinho e. Melo, Mark R. Keezer, John S. Duncan, Josemir W. Sander, Barbara Tettenborn, Matthias J. Koepp, Marian Galovic*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: The purpose of this study was to identify risk factors for acute symptomatic seizures and post-stroke epilepsy after acute ischemic stroke and evaluate the effects of reperfusion treatment. Methods: We assessed the risk factors for post-stroke seizures using logistic or Cox regression in a multicenter study, including adults from 8 European referral centers with neuroimaging-confirmed ischemic stroke. We compared the risk of post-stroke seizures between participants with or without reperfusion treatment following propensity score matching to reduce confounding due to treatment selection. Results: In the overall cohort of 4,229 participants (mean age 71 years, 57% men), a higher risk of acute symptomatic seizures was observed in those with more severe strokes, infarcts located in the posterior cerebral artery territory, and strokes caused by large-artery atherosclerosis. Strokes caused by small-vessel occlusion carried a small risk of acute symptomatic seizures. 6% developed post-stroke epilepsy. Risk factors for post-stroke epilepsy were acute symptomatic seizures, more severe strokes, infarcts involving the cerebral cortex, and strokes caused by large-artery atherosclerosis. Electroencephalography findings within 7 days of stroke onset were not independently associated with the risk of post-stroke epilepsy. There was no association between reperfusion treatments in general or only intravenous thrombolysis or mechanical thrombectomy with the time to post-stroke epilepsy or the risk of acute symptomatic seizures. Interpretation: Post-stroke seizures are related to stroke severity, etiology, and location, whereas an early electroencephalogram was not predictive of epilepsy. We did not find an association of reperfusion treatment with risks of acute symptomatic seizures or post-stroke epilepsy. ANN NEUROL 2021.

Original languageEnglish
JournalAnnals of Neurology
DOIs
Publication statusAccepted/In press - 2021
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2021 The Authors. Annals of Neurology published by Wiley Periodicals LLC on behalf of American Neurological Association.

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