5 research outputs found

    Seizures after Ischemic Stroke: A Matched Multicenter Study

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    Accidente cerebrovascular isquĂ©mico; Tratamiento de reperfusiĂłn; Factores de riesgoIschemic Stroke; Reperfusion treatment; Risk factorsAccident cerebrovascular isquĂšmic; Tractament de reperfusiĂł; Factor de riscObjective 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

    Correlation between stroke and development of poststroke seizures and epilepsy

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    Der Schlaganfall ist im höheren Lebensalter eine der hĂ€ufigsten Ursachen fĂŒr symptomatische Epilepsien. Aufgrund der demographischen Entwicklung mit zunehmend höherer Lebenserwartung stellen postischĂ€mische epileptische AnfĂ€lle ein immer grösseres Gesundheitsproblem dar und sind in der neurologischen Praxis ein immer hĂ€ufiger zu beobachtendes PhĂ€nomen. Mit dieser Arbeit sollen Risikofaktoren fĂŒr die Entwicklung vaskulĂ€r bedingter epileptischer AnfĂ€lle herausgearbeitet werden, um Patienten mit erhöhtem Risiko zeitig zu erkennen und gegebenenfalls bereits nach dem ersten epileptischen Anfall antikonvulsiv zu behandeln. Die publizierte Inzidenz postischĂ€mischer epileptischer AnfĂ€lle respektive Epilepsien variiert in der Literatur der letzten 30 Jahre stark. Diese Spannbreite ist auf unterschiedliche Studiendesigns, heterogenes Patientenkollektiv, inkonsistenten Gebrauch der Terminologien, variierende Fallzahlen und unterschiedlich lange Verlaufsperioden zurĂŒck zu fĂŒhren. In der vorliegenden Arbeit konnte gezeigt werden, dass die Inzidenz postischĂ€mischer AnfĂ€lle mit 5.18% im Vergleich zu den in der Literatur publizierten Daten eher niedrig ist. Von den 5.18% waren 2.18% einmalige epileptische AnfĂ€lle und 3.0% rezidivierende AnfĂ€lle. Die niedrigere Inzidenz ist auf die strengen Ausschlusskriterien (insbesondere der Ausschluss einer primĂ€rer HĂ€morrhagien, aber auch der hĂ€morrhagischen Transformation, metabolischer Störungen und AlkoholabhĂ€ngigkeit) sowie auf ein heterogenes Patientenkollektiv mit Einschluss sowohl leichter als auch schwerer SchlaganfĂ€lle zurĂŒckzufĂŒhren und spiegelt wahrscheinlich eher die Inzidenz epileptischer AnfĂ€lle nach rein ischĂ€mischen Hirninfarkten wieder als die zuvor publizierten Daten. Zusammenfassend kann aufgrund der Resultate unserer Studie festgestellt werden, dass Patienten mit einem mikroangiopathischen, lakunĂ€ren Infarkt tendentiell seltener epileptische AnfĂ€lle entwickeln und dass nach einer transitorisch ischĂ€mischen Attacke ein signifikant geringeres Risiko besteht einen epileptischen Anfall zu erleiden. Das Risiko fĂŒr vaskulĂ€r bedingte epileptische AnfĂ€lle ist bei grossen IschĂ€mien mit kortikaler Beteiligung signifikant erhöht. Bei Infarkten im Stromgebiet der Arteria cerebri media sowie bei schwerem neurologischem Defizit (major stroke) findet sich lediglich eine Tendenz zu hĂ€ufigerem Auftreten von epileptischen AnfĂ€llen. Es konnte kein signifikanter Unterschied zwischen FrĂŒhanfĂ€llen und SpĂ€tanfĂ€llen bezĂŒglich Entwicklung rezidivierender AnfĂ€lle gefunden werden; dies ist möglicherweise auf die kleinen Fallzahlen in den Untergruppen zurĂŒckzufĂŒhren. Bezugnehmend auf die bisher in der Lieratur publizierten Daten kann aufgrund widersprĂŒchlicher Resultate immer noch keine defintive Aussage getroffen werden, welche Patienten nach einer zerebralen Durchblutungsstörung gefĂ€hrdet sind rezidivierende postischĂ€mische AnfĂ€lle zu entwickeln, und wann der Beginn einer antikonvulsiven Therapie sinnvoll ist. ZukĂŒnftig braucht es prospektive, randomisierte, plazebokontrollierte Studien, welche das Outcome und das Rezidivrisiko fĂŒr epileptische AnfĂ€lle nach ischĂ€mischem Hirninfarkt nach erstem FrĂŒh- respektive SpĂ€tanfall untersuchen.Stroke is the leading cause of epilepsy after the age of 60. The published incidence of post-stroke seizures and epilepsy varies from 4.4 to 42.8% according to different study designs. Methods: Our semi-prospective study included 599 first-ever stroke cases admitted to our hospital between January 2002 and December 2004. Patients with a prior history of stroke, epilepsy, haemorrhagic stroke or other possible causes of epilepsy (e.g. brain tumour, alcohol dependence) were excluded from the study.The follow-up period to identify stroke-related seizures was of a minimum of 36 months, in average 49.5 months. Poststroke epilepsy was related to clinical factors (age, sex, onset stroke severity, lesion size, localisation, stroke subtype and stroke- risk factor profile) and divided into “early onset” and “late onset” seizures occurring either within 7 days or more than one week after stroke, respectively. Results: Of all patients, 5.18% developed seizures after stroke, of whom 2.18% experienced a single epileptic seizure and 3.0% developed epilepsy with recurrent seizures. Early-onset seizures were detected in 25.8% and late-onset seizures in 74.2%. Predictors for developing vascular epilepsy are severity of initial neurological impairment, large lesions with cortical involvement and anterior circulation syndrome. No significant differences were observed in clinical predictors between early- and late-onset seizures, neither in single seizure nor in epilepsy. But a larger number of patients with late-onset seizures developed epilepsy. Conclusion: We found a rather low incidence of 5.18% of post-stroke seizures, which may be due to our strict exclusion criteria for potential epileptogenic pre-morbidities. In other studies this may be overestimated. As others, we also found more severe neurological impairment, large lesions with cortical involvement and anterior circulation syndrome to be predictive factors for post-stroke seizures

    Seizures after ischemic stroke: a matched multicenter study

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    Objective: 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 eight 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 4229 participants (mean age 71 years, 57% male), 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. The 6% developed post-stroke epilepsy. Risk factors for post-stroke epilepsy were acute symptomatic seizures, more severe strokes, infracts 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. This article is protected by copyright. All rights reserved
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