Efficacy of oral perampanel in status epilepticus and acute repetitive seizures in children at a tertiary care hospital in Thailand.

Status epilepticus (SE) and acute repetitive seizure (ARS) are emergency conditions associated with significant morbidity and mortality in children. Anti-seizure medications (ASMs) need to terminate seizures to prevent brain damage and death. Common challenges that delay the management of SE and ARS in children at Phramongkutklao hospital are difficulty in accessing intravenous route for drug administration and inadequate number of intensive care units (which will be required in case of the use of adverse events to anesthetic ASMs). Oral, non-sedating ASMs could be a potential option to terminate seizures effectively in SE and ARS in children and further studies in this aspect are needed. We performed a prospective, descriptive study in children with SE or ARS < 18 years of age who had contraindication to or their seizures were refractory to the second-line ASMs after benzodiazepine and received oral perampanel. Demographic data, efficacy, and adverse effects of treatment were recorded. Fifteen patients with SE (13.3%) and acute repetitive seizure (86.6%) were enrolled. All patients received an oral perampanel loading dose and the maintenance dose depended on their body weight. The average loading and maintenance dose were 0.24 mg/kg/dose and 0.12 mg/kg/day, respectively. At 48 h after administration of loading dose of perampanel, eight of fifteen patients (53.3%) became seizure free, one patient had seizure reduction of >75% from baseline, and three patients had seizure reduction of 25-50% from baseline. No serious side effects were observed. These results indicate that oral perampanel may be potential treatment option for SE and ARS in children.