Discontinuation of antiepileptic drugs after pediatric epilepsy surgery
D Barry Sinclair1, Laura Jurasek, Matt Wheatley
1Comprehensive Epilepsy Program, University of Alberta, Edmonton, Alberta, Canada. barry.sinclair@capitalhealth.ca
Insights
Pediatric epilepsy surgery can lead to antiepileptic drug discontinuation. While less than half of children relapsed after stopping medication, success rates were higher following temporal lobe resection compared to extratemporal lobe surgery.
Area of Science:
- Pediatric Neurology
- Neurosurgery
- Epileptology
Background:
- Epilepsy surgery is a recognized treatment for medically intractable seizures in children.
- Antiepileptic drug (AED) discontinuation after surgery is well-documented in adults but rarely studied in pediatric populations.
Purpose of the Study:
- To evaluate surgical outcomes and the necessity of AEDs post-surgery in pediatric patients.
- To compare AED discontinuation rates after temporal lobe resection versus extratemporal lobe resection.
Main Methods:
- Retrospective review of 80 pediatric patients undergoing epilepsy surgery.
- Patients were maintained on AEDs for 1 year post-surgery.
- AED discontinuation was attempted in seizure-free patients with normal electroencephalograms (EEGs) after 1 year.
Main Results:
- 44% of all patients relapsed after attempting AED discontinuation.
- Relapse rates were 32% for temporal lobe resections and 55% for extratemporal lobe resections.
- AED discontinuation success was significantly higher after temporal lobe surgery.
Conclusions:
- Long-term AEDs are not universally required after pediatric epilepsy surgery.
- Medication withdrawal is feasible for many children, particularly after temporal lobe resections.
- Epilepsy surgery offers a potential pathway to reduced or eliminated AED dependence in pediatric patients.
Abstract:
In children with medically intractable seizures, epilepsy surgery is now a widely accepted option. Successful discontinuation of antiepileptic drugs after epilepsy surgery has been reported in adults, but rarely in children. Surgical outcome and need for antiepileptic drugs after temporal and extratemporal lobe resection were retrospectively reviewed for 80 pediatric patients from the Comprehensive Epilepsy Program at the University of Alberta. For 1 year after surgery, children were maintained on at least one antiepileptic drug. Antiepileptic drug discontinuation was attempted in all patients with a nonepileptic electroencephalogram after 1 year seizure-free. Less than half of the patients (44%) eventually relapsed without antiepileptic drugs. Of the 40 patients in the temporal lobe group, 13 (32%) relapsed without antiepileptic drugs, as did 22 of the 40 extratemporal lobe resection patients (55%). Success rates for antiepileptic drug discontinuation after surgery were higher in the temporal lobe than in the extratemporal lobe group. Long-term antiepileptic drugs are not necessary in all cases, and for many children medication can be withdrawn after epilepsy surgery.
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