The association between the degree of intraoperative bisynchronization blockade and drop attack freedom after corpus callosotomy in pediatric patients: a comparative cohort study.

Whether atonic seizures resolved postoperatively was also evaluated.

Forty-six patients met the inclusion criteria.

The majority underwent complete corpus callosotomy (65%), most via an open approach (67%).

At 1 year, freedom from atonic seizures (International League Against Epilepsy class 1Engel class I) was highest in the > 50% blockade group (70.0%) compared with the < 50% blockade (40.0%) and absent bisynchronization (25%) groups (p = 0.042).