Predictive factors for the development of epilepsy after ischemic stroke

Area of Science:

• Neurology
• Epileptology
• Stroke Medicine

Background:

• Ischemic stroke is a leading cause of adult epilepsy, with post-stroke epilepsy (PSE) occurring in approximately 7% of cases.
• Identifying risk factors for PSE is crucial for patient management and prognosis.

Purpose of the Study:

• To analyze predictive factors for the development of post-stroke epilepsy (PSE) in a cohort of ischemic stroke patients.
• To identify independent risk factors associated with PSE development.

Main Methods:

• Retrospective observational cohort study of adult ischemic stroke patients (n=691) with at least one year of follow-up.
• Demographic, clinical, and neuroimaging variables were evaluated using multivariate analysis.
• Exclusion criteria included a history of epilepsy or other epileptogenic brain lesions.

Main Results:

• The incidence of PSE was 6.2% (42/691) in the study population.
• Independent risk factors for PSE identified by multivariate analysis were: acute symptomatic seizures (OR=3.22), cortical involvement (OR=0.274), Fazekas scale score (OR=0.519), and modified Rankin Scale (mRS) at discharge (OR=1.33).
• Higher stroke severity (NIHSS), cortical localization, and acute symptomatic seizures were associated with higher PSE frequency.

Conclusions:

• Neuroimaging findings, acute symptomatic seizures during hospitalization, and neurological deficit at discharge are important indicators for PSE risk.
• The identified risk factors align with existing literature, emphasizing their significance.
• These findings will aid in developing predictive models to individualize PSE risk assessment in ischemic stroke patients.