期刊
JOURNAL OF CHILD NEUROLOGY
卷 36, 期 5, 页码 365-370出版社
SAGE PUBLICATIONS INC
DOI: 10.1177/0883073820974855
关键词
vagus nerve stimulation; drug-resistant childhood epilepsy; outcome predictors
This study reviewed the experience of treating pediatric patients with vagus nerve stimulator implantation and found that early implantation within 5 years of seizure onset was the key predictor of favorable clinical outcomes. Most patients showed improved quality of life after surgery, although a small percentage experienced adverse events.
Objective: We describe a multicenter experience with vagus nerve stimulator implantation in pediatric patients with drug-resistant epilepsy. Our goal was to assess vagus nerve stimulation efficacy and identify potential predictors of favorable outcome. Methods: This is a retrospective study. Inclusion criteria: <= 18 years at time of vagus nerve stimulator implantation, at least 1 year of follow-up. All patients were previously found to be unsuitable for an excisional procedure. Favorable clinical outcome and effective vagus nerve stimulation therapy were defined as seizure reduction >50%. Outcome data were reviewed at 1, 2, 3, and 5 years after vagus nerve stimulator implantation. Fisher exact test and multiple logistic regression analysis were employed. Results: Eighty-nine patients met inclusion criteria. Responder rate (seizure frequency reduction >50%) at 1-year follow-up was 25.8% (4.5% seizure-free). At last follow-up, 31.5% had a favorable outcome and 5.2% were seizure free. The only factor significantly predicting favorable outcome was time to vagus nerve stimulator implantation, with the best outcome achieved when vagus nerve stimulator implantation was performed within 3 years of seizure onset. Implantation between 3 and 5 years after epilepsy onset correlated with better long-term seizure freedom (13.3% at T5). Overall, 65.2% of patients evidenced improved quality of life at last follow-up. However, 12.4% had adverse events, but most were mild and disappeared after 3-4 months. Conclusions: Early vagus nerve stimulator implantation within 5 years of seizure onset was the only predictor of favorable clinical outcome in pediatric patients. Improved quality of life and a low incidence of significant adverse events were observed.
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