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Callosotomy for epilepsy after West syndrome
J M Pinard1, O Delalande, C Chiron
1Unité de Neurochirurgie Pédiatrique, Fondation Rothschild, Hôpital Saint Vincent de Paul, Paris, France.
Epilepsia
|December 28, 1999
Summary
Complete callosotomy effectively treated generalized epilepsy in children with West syndrome, particularly for drop attacks. Walking ability is a key indicator for successful outcomes in these epilepsy surgery candidates.
Area of Science:
- Neurosurgery
- Pediatric Neurology
- Epileptology
Background:
- West syndrome is a severe epilepsy syndrome in infancy.
- Callosotomy is a surgical option for refractory epilepsy.
- Identifying optimal candidates for callosotomy is crucial.
Purpose of the Study:
- To analyze callosotomy outcomes in 17 children with generalized epilepsy post-West syndrome.
- To determine seizure types and surgical procedures influencing results.
- To define selection criteria for callosotomy candidates.
Main Methods:
- Callosotomy performed in two stages: partial (anterior/posterior) followed by completion.
- 17 children evaluated clinically, via video-EEG, and neuropsychologically pre- and post-surgery.
- Mean follow-up duration of 4 years.
Main Results:
- Complete callosotomy improved seizure frequency in 9/14 patients, unlike partial procedures.
- Spasms resolved in 80% and drop attacks significantly reduced in 90% after complete callosotomy.
- Improved cognition and behavior noted in some; speech deterioration occurred in two post-posterior callosotomy.
Conclusions:
- Drop attacks are the primary indication for complete callosotomy in children with prior West syndrome.
- Pre-existing walking ability is a significant predictor of positive outcomes post-surgery.
- Careful patient selection is vital for successful epilepsy surgery.