Prevalence, Risk Factors and Prognosis of Seizures After Ischemic Stroke

Author:

Moreira Mairla Maracaba1,de Andrade João Brainer Clares23ORCID,Rodriguez Carlos Eduardo Lenis3,Araújo Davi Said1,Rolim Flávia Paiva1,Monteiro Marla Rochana Braga4,Frota Norberto Anizio14,Lima Fabrício Oliveira1,Silva Gisele Sampaio2

Affiliation:

1. Hospital Geral de Fortaleza, Fortaleza, State of Ceará, Brazil

2. Universidade Federal de São Paulo, São Paulo, State of São Paulo, Brazil

3. Centro Universitário São Camilo, São Paulo, State of São Paulo, Brazil

4. Universidade de Fortaleza, São Paulo, State of São Paulo, Brazil

Abstract

Introduction and objectives Epileptic seizures (ES) are a recognized complication of stroke, commonly associated with extensive ischemic regions and cortical damage. Despite thorough investigation, reports on the incidence, risk factors, and functional implications of post-stroke ES vary widely in the literature. We aimed to evaluate the predictive factors for post-stroke ES and their effects on the clinical outcome at hospital discharge. Methods Patients with acute ischemic stroke (AIS) admitted to our stroke unit from 2015 to 2017 were eligible to this study. A multivariable logistic regression modeling was built to assess associated variables with acute symptomatic seizures (AS). We defined AS as seizures that occurred within the period of hospitalization (stroke unit discharge) without a history of seizures with clinical or electroencephalographic evidence. Results Four hundred ninety-two were included in the final analysis. The patients had a mean of 66.7 (±14.4) years; 56% were male. Thirty-eight (7.7%) patients experienced clinical ES in-hospital, with a higher incidence in those with total anterior circulation syndrome. The NIH Stroke Scale score (odds ratio [OR] 1.07, 95% confidence interval [CI], p = .03) and symptomatic hemorrhagic transformation (HT) (OR: 3.53, 95% CI: 1.38–8.99, p = .01) independently predicted ES. We did not find an association between the occurrence of seizures and unfavorable outcomes (Modified Rankin Scale 3–6) at discharge (OR1.26, 95% CI: 0.3–5.32, p = .75). Patients with seizures had a longer hospital stay (18.5 [11–35] vs. 9 [7–14] days). Conclusions Patients presenting higher NIH Stroke Scale scores upon admission or experiencing symptomatic HT face an increased risk of in-hospital ES. Nonetheless, acute symptomatic ES following AIS does not independently predict adverse functional outcomes at discharge.

Publisher

SAGE Publications

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