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Acute symptomatic seizures and epilepsy after mechanical thrombectomy

Journal article
Authors Hanna Eriksson
Pia Löwhagen Hendén
Alexandros Rentzos
Fani Pujol-Calderón
Jan-Erik Karlsson
Kina Höglund
Kaj Blennow
Henrik Zetterberg
Lars Rosengren
Johan Zelano
Published in Epilepsy and Behavior
ISSN 1525-5050
Publication year 2019
Published at Institute of Neuroscience and Physiology
Institute of Clinical Sciences, Department of Anesthesiology and Intensive care
Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry
Institute of Neuroscience and Physiology, Department of Clinical Neuroscience
Institute of Clinical Sciences, Department of Radiology
Language en
Keywords Epilepsy, Rehabilitation, Stroke
Subject categories Neurology, Radiology, Nuclear Medicine and Medical Imaging


Purpose: The purpose of this study was to assess the incidence of acute symptomatic seizures and poststroke epilepsy (PSE) in a well-characterized cohort of patients treated with mechanical thrombectomy. In addition, we aimed to describe the dynamics of blood markers of brain injury in patients that developed PSE. Methods: Participants of the prospective AnStroke Trial of anesthesia method during mechanical thrombectomy were included and acute symptomatic seizures and PSE ascertained by medical records review. Blood markers neurofilament light (NFL), tau, glial fibrillary acidic protein (GFAP), S100 calcium-binding protein B (S100B), and neuron-specific enolase (NSE) were assessed. Results: A total of 90 patients with acute anterior ischemic stroke were included. Median National Institutes of Health Stroke Scale (NIHSS) at admission to hospital was 18 (IQR 15–22). Recanalization was achieved in 90%. No patients had epilepsy prior to the ischemic stroke. Four patients (4.4%) had acute symptomatic seizures and four patients (4.4%) developed PSE during the follow-up time (to death or last medical records review) of 0–4.5 years (median follow-up 1070 days IQR 777–1306), resulting in a two-year estimated PSE risk of 5.3% (95%CI: 0.2–10.4%). Blood markers of brain injury (NFL, tau, GFAP, S100B, and NSE) were generally above the cohort median in patients that developed PSE. Conclusions: The incidence of PSE after mechanical thrombectomy was low in our cohort. All blood biomarkers displayed interesting sensitivity and specificity. However, the number of PSE cases was small and more studies are needed on risk factors for PSE after mechanical thrombectomy. The potential of blood markers of brain injury markers to contribute to assessment of PSE risk should be explored further. This article is part of the Special Issue "Seizures & Stroke".

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