Hypertension on admission is associated with a lower risk of early seizures after stroke.
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OBJECTIVE
Despite the common occurrence of early seizures (ES) after stroke, the relationship between risk factors and this complication of stroke is not well established. In this study we have examined the relationship between clinical measures on admission and ES after stroke.
METHODS
We included 1073 patients (mean age 69 ± 12, 51.6% females) with ischemic and haemorrhagic stroke. The frequency of seizure occurrence within 2 weeks of stroke was determined. We used a logistic regression model to analyse the effect of blood pressure on admission and other clinical factors (age, gender, diabetes, atrial fibrillation and dyslipidemia) on the occurrence of ES after stroke.
RESULTS
ES occurred after 4.1% and 4.0% of ischemic and haemorrhagic strokes respectively. Compared to patients with high blood pressure on admission, those with low and normal blood pressure had a higher risk of ES after stroke (2.9% vs.7.5% vs. 7.6%, p=0.001). Also the mean age of patients with post-stroke ES was lower (62.5 vs. 69.3, p<0.001). In a logistic regression analysis, low/normal blood pressure remained independently associated with ES after stroke with OR of 2.46 (95% CI 1.38-4.63, p=0.006).
CONCLUSIONS
ES after stroke was equally frequent in patients with ischemic and haemorrhagic stroke. Low/normal blood pressure on admission and younger patient age were risk factors for ES after stroke.
