Monday, November 14, 2011

Incidence and predictors of acute symptomatic seizures after stroke

Objective:

To assess incidence and predictors of acute symptomatic seizures in a prospective cohort of patients with first stroke.

Methods:

Patients with first stroke hospitalized in 31 Italian centers were recruited. Relevant demographic data, disease characteristics, and risk factors were collected. Acute symptomatic seizures (≤7 days) were recorded and correlated to age, gender, family history of epilepsy, and vascular risk factors.

Results:

A total of 714 patients (315 women, 399 men; age 27–97 years) were enrolled. A total of 609 (85.3%) had cerebral infarction (32 cerebral infarction with hemorrhagic transformation [CIHT]) and 105 (14.7%) primary intracerebral hemorrhage (PIH). A total of 141 (19.7%) had a large lesion (>3 cm) and 296 (41.5%) cortical involvement. Twelve patients reported family history of seizures. Forty-five patients (6.3%) presented acute symptomatic seizures, 24 with cerebral infarction (4.2%), 4 with CIHT (12.5%), and 17 (16.2%) with PIH. In multivariate analysis, compared to cerebral infarction, PIH carried the highest risk (odds ratio [OR] 7.2; 95% confidence interval [CI] 3.5–14.9) followed by CIHT (OR 2.7; 95% CI 0.8–9.6). Cortical involvement was a risk factor for PIH (OR 6.0; 95% CI 1.8–20.8) and for CI (OR 3.1; 95% CI 1.3–7.8). Hyperlipidemia (OR 0.2; 95% CI 0.03–0.8) was a protective factor for IPH.

Conclusion:

The incidence of acute symptomatic seizures is the highest reported in patients with first stroke with prospective follow-up. Hemorrhagic stroke and cortical lesion were independent predictors of acute symptomatic seizures. Hyperlipidemia was a protective factor for hemorrhagic stroke.






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