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Single stage epilepsy surgery in children and adolescents with focal cortical dysplasia type II – Prognostic value of the intraoperative electrocorticogram
- Source :
- Clinical Neurophysiology. 130:20-24
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Objective To evaluate prospectively the informative/prognostic value of epileptic discharges in the post-resection ECoGs of children with drug-resistant epilepsies and Focal Cortical Dysplasia type II (FCD-II). Methods Included were consecutive patients with focal epilepsies and suspected FCD-II who were planned for single-stage epilepsy surgery based on non-invasive presurgical evaluation results. Intraoperative ECoGs were recorded using a 32-channel system with strip- and/or grid-electrodes. Spikes were defined as transients with a mainly negative component and duration of 20–70 ms. Fast activity was defined as rhythmic bursts of polyspikes >13 Hz. All ECoGs were analysed visually. The significance of both spikes and fast activity in the post-resection ECoG for seizure outcomes 24 months after surgery was evaluated. Results Data from 18 patients (five girls) were analysed. 10/18 patients (55.6%) showed spikes in their post-resection ECoGs, five of them showed additional fast activity. 24 months after surgery, 12/18 patients (66.7%) were seizure-free. There was a significant correlation between unfavorable seizure outcomes and fast activity in the post-resection ECoGs (p = 0.009), whereas spikes alone were not predictive (p = 0.502). Conclusion Even when recorded with non-sophisticated techniques, presence of fast activity in post-resection ECoGs might be a valid negative outcome-predictor after surgery in paediatric patients with FCD-II associated drug-resistant epilepsies. Significance Fast activity recorded with a relatively simple ECoG equipment seems also to have prognostic significance and by this might be an alternative to HFOs recorded with highly sophisticated and expensive technologies.
- Subjects :
- Male
medicine.medical_specialty
Adolescent
050105 experimental psychology
03 medical and health sciences
Epileptic discharge
0302 clinical medicine
Physiology (medical)
medicine
Humans
0501 psychology and cognitive sciences
Epilepsy surgery
Prospective Studies
Focal Epilepsies
Child
neoplasms
Electrocorticography
Paediatric patients
Epilepsy
medicine.diagnostic_test
business.industry
Single stage
05 social sciences
Infant
Cortical dysplasia
Prognosis
medicine.disease
Sensory Systems
Neurology
Child, Preschool
Malformations of Cortical Development, Group I
Female
Fast activity
Epilepsies, Partial
Neurology (clinical)
Radiology
business
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 13882457
- Volume :
- 130
- Database :
- OpenAIRE
- Journal :
- Clinical Neurophysiology
- Accession number :
- edsair.doi.dedup.....147461ae9765b3a6b054eae8e1902fdb