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Pharmacology, efficacy, and tolerability of potassium bromide in childhood epilepsy
Rudolf Korinthenberg1, Peter Burkart, Christiane Woelfle
1Department of Pediatrics and Adolescent Medicine, Division of Neuropediatrics and Muscular Disorders, University Hospital Freiburg, Freiburg, Germany. rudolf.korinthenberg@uniklinik-freiburg.de
Insights
Potassium bromide effectively reduced generalized tonic-clonic seizures in children with severe epilepsy. This epilepsy treatment showed significant seizure frequency reduction, making it a viable tertiary option.
Area of Science:
- Pediatric Neurology
- Clinical Pharmacology
Background:
- Severe epilepsy in children presents significant treatment challenges.
- Generalized tonic-clonic seizures (GTCS) are a common and debilitating seizure type in pediatric epilepsy.
Purpose of the Study:
- To evaluate the efficacy and tolerability of potassium bromide (KBr) in pediatric patients with severe epilepsy.
- To assess the impact of KBr on the frequency of generalized tonic-clonic seizures in this population.
Main Methods:
- A cohort of 113 pediatric patients (aged 1-20 years) with severe epilepsy received potassium bromide.
- Dosage ranged from 45 mg/kg to 70 mg/kg, with steady-state blood levels monitored.
- Seizure frequency and reduction were assessed over the study period.
Main Results:
- A significant reduction in the number of patients experiencing GTCS was observed (from 82 to 41).
- Median monthly seizure frequency decreased from 4.5 to 0.
- 49% of patients achieved complete seizure freedom, and 31% had >50% seizure reduction.
Conclusions:
- Potassium bromide demonstrates significant efficacy in reducing GTCS in children with severe epilepsy.
- KBr can be considered a drug of tertiary choice for pediatric epilepsy management.
- Close clinical and pharmacologic monitoring is essential for optimizing benefits and managing side effects of KBr therapy.
Abstract:
This study investigated the efficacy and tolerability of potassium bromide in 113 patients (aged, 1-20 years) with severe epilepsy and generalized tonic-clonic seizures. Potassium bromide was started at 45 mg/kg and raised to 70 mg/kg (median). Steady-state blood level was reached after a median of 28 days (range, 5-95 days). The number of patients who had suffered generalized tonic-clonic seizures during the last month dropped from 82 to 41, and the median frequency, dropped from 4.5 to 0 per month. Of the patients with generalized tonic-clonic seizures during baseline, 49% showed none in the last 4 weeks of the study, and another 31% showed a reduction by more than 50%. Potassium bromide should have a place as a drug of tertiary choice in the treatment of children with epilepsy. Experience with the drug and close clinical and pharmacologic monitoring are necessary to achieve the greatest possible benefit and avoid side effects.
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