Predictive factors in post-stroke epilepsy: Retrospective analysis.

Area of Science:

• Neurology
• Epileptology
• Stroke Medicine

Background:

• Cerebrovascular disease is a significant cause of epilepsy, with incidence rates varying widely.
• Post-stroke seizures are categorized as early-onset (within 2 weeks) or late-onset (after 2 weeks).

Purpose of the Study:

• To retrospectively analyze and differentiate predictive factors for seizures following stroke.
• To identify characteristics associated with different seizure types and stroke etiologies.

Main Methods:

• Retrospective analysis of 164 adult patients with post-stroke seizures and no prior epilepsy.
• Data collected included stroke type (ischemic/hemorrhagic), seizure timing, modified Rankin Scale score, risk factors, EEG, and antiepileptic drug treatment.
• ASPECTS scale used to rate lesion size in ischemic stroke.

Main Results:

• The study included 164 patients (average age 68.83 years), with 144 experiencing ischemic stroke (IS) and 20 hemorrhagic stroke (HS).
• Generalized tonic-clonic seizures were most common (101/164), followed by focal impaired-awareness (44/164) and focal aware seizures (19/164).
• Generalized seizures were more frequent after IS, while early-onset seizures were associated with HS and severe disability.

Conclusions:

• Generalized seizures are typically late complications of IS, whereas early-onset seizures are linked to HS and severe disability.
• Cortical stroke location increases seizure likelihood.
• Larger ischemic stroke lesions (higher ASPECTS score) correlate with a shift from generalized to focal seizures.