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Intravenous paraldehyde for seizure control in newborn infants
Insights
Paraldehyde effectively controls neonatal seizures when serum concentrations exceed 10 mg/dl. Achieving adequate levels typically requires an infusion, with additional doses safely administered if needed for seizure management.
Area of Science:
- Neonatal Medicine
- Clinical Pharmacology
Background:
- Neonatal seizures pose significant risks.
- Effective anticonvulsant therapies are crucial for newborns.
Purpose of the Study:
- To evaluate the efficacy and dosing of paraldehyde for neonatal seizures.
- To establish target serum concentrations for anticonvulsant effects.
Main Methods:
- Studied 14 neonates with seizures.
- Administered paraldehyde via IV bolus and infusion.
- Monitored serum paraldehyde concentrations and seizure control.
Main Results:
- Higher serum paraldehyde levels correlated with better seizure control.
- Concentrations >10 mg/dl demonstrated anticonvulsant effects.
- A 2-hour infusion of 200 mg/kg/h achieved therapeutic levels in most neonates.
Conclusions:
- Paraldehyde is an effective treatment for neonatal seizures.
- Serum concentration monitoring guides safe and effective dosing.
- Targeting serum levels above 10 mg/dl is recommended for seizure control.
Abstract:
We studied 14 newborn infants with seizures after birth asphyxia or other causes. Paraldehyde was given as a 200 mg/kg IV bolus followed by an infusion of 16 mg/kg/h (10 cases), or as a 400 mg/kg bolus (4 cases). Serum concentrations of paraldehyde were higher in periods of adequate seizure control than in periods of little or no response. Paraldehyde serum concentrations above 10 mg/dl were associated with anticonvulsant effects and were achieved in most neonates with a 2-hour infusion of 200 mg/kg/h. If there is no effect, serum concentrations are probably below 10 mg/dl and an additional 200 mg/kg can be given safely over 1 hour.