Applications and Predictors of Outcomes Following Stereo-Electroencephalography in Pediatric Patients With Drug-Resistant Epilepsy.

Aims: This study aims to evaluate the role of stereo-electroencephalography (SEEG) in managing pediatric patients with drug-resistant epilepsy. We further explore prognostic factors influencing surgical outcomes following SEEG-guided resective or disconnective surgery.

Methods: A retrospective review was conducted on pediatric patients who underwent SEEG at the Pediatric Epilepsy Center, Peking University First Hospital, between July 2017 and July 2022. Univariate and multivariate analyses identified key predictors for SEEG-guided surgery. Kaplan-Meier survival analysis was employed to estimate the seizure-free rate, and further statistical tests were applied to evaluate factors associated with seizure outcomes.

Results: Among the 148 children included in this study, 102 underwent SEEG-guided resective/disconnective surgery. Multivariate regression identified age at surgery (p < 0.05, 95% CI 0.190-0.997) as an independent predictor for selecting resective/disconnective surgery. The seizure-free rate in patients who underwent SEEG-guided surgery was 69.6%. Multivariate regression confirmed that total resection with lesional MRI (p < 0.05, 95% CI 0.012-0.186) and FCD type II (p < 0.05, 95% CI 0.051-0.851) were strong predictors of seizure freedom.

Conclusions: SEEG plays a crucial role in pediatric epilepsy surgery, particularly in children under 6 years old. Total resection with lesional MRI and FCD type II was the most favorable prognostic predictor for achieving seizure freedom in children undergoing SEEG-guided surgery.