[Valproic acid versus lamotrigine as a monotherapy for absence epilepsy in children]
Tie-Shuan Huang1, Jin-Lan Zhu, Bing Li
1Shenzhen Children's Hospital, Shenzhen, Guangdong, China. hts249@163.com
Insights
Valproic acid (VPA) and lamotrigine are effective treatments for childhood absence epilepsy. VPA showed a greater ability to normalize EEG findings compared to lamotrigine.
Area of Science:
- Pediatric Neurology
- Epileptology
- Clinical Pharmacology
Background:
- Childhood absence epilepsy is a common epilepsy syndrome.
- Valproic acid (VPA) and lamotrigine are established antiepileptic drugs used in monotherapy.
- Comparative efficacy data for these agents in pediatric absence epilepsy are important for clinical decision-making.
Purpose of the Study:
- To compare the efficacy and safety of valproic acid (VPA) versus lamotrigine as monotherapy for absence epilepsy in children.
- To assess seizure freedom rates and electroencephalogram (EEG) normalization.
- To evaluate the incidence of severe adverse effects.
Main Methods:
- A randomized, open-label study design was employed.
- Children diagnosed with absence epilepsy based on clinical and video-EEG criteria were enrolled.
- Patients received either VPA or lamotrigine monotherapy and were followed for 12 months.
Main Results:
- Out of 48 eligible children, 45 completed the study (23 on VPA, 22 on lamotrigine).
- Seventeen children (74%) on VPA and 12 children (55%) on lamotrigine achieved seizure freedom at 12 months.
- EEG normalization was significantly higher in the VPA group (65.2%) compared to the lamotrigine group (27.3%) (P<0.05).
- No severe adverse effects were reported in either treatment group.
Conclusions:
- Both VPA and lamotrigine are safe and efficacious monotherapies for pediatric absence epilepsy.
- VPA demonstrated a superior effect in tapering epileptic-formed discharges on EEG compared to lamotrigine.
- These findings support VPA as a potentially preferred agent when EEG normalization is a key treatment goal.
Objective:
To compare the efficacy of valproic acid (VPA) and lamotrigine as a monotherapy for absence epilepsy in children.
Methods:
A randomized, open-label design was used. Childhood absence epilepsy was diagnosed based on the presence of typical seizures and video-EEG findings. Eligible patients were randomly treated with VPA or lamotrigine. All patients were followed up for 12 months.
Results:
Forty-five out of 48 eligible children completed the study. There were 23 children in the VPA group and 22 children in the lamotrigine group. Seventeen children were seizure-free in the VPA group 12 months after treatment. Fifteen out of the 17 children showed normal EEG (no epileptic-formed discharge). Twelve children were seizure-free in the lamotrigine group 12 months after treatment. The proportion showing normal EEG in the lamotrigine group (6/22, 27.3%) was significantly lower than that in the VPA group (15/23, 65.2%) (P<0.05). Severe adverse effects were not found in both groups.
Conclusions:
Both VPA and lamotrigine are safe and efficacious for treatment of absence seizures in children. VPA appears to be better than lamotrigine in tapering epileptic-formed discharge.
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