Related Experiment Videos
[Pharmacokinetics of theophylline in children with acute asthmatic crisis]
T Casasín Edo1, M Llusa Arbos, A Gómez Papi
1Servicio de Farmacia, Hospital Juan XXIII, Tarragona.
Insights
Determining optimal theophylline dosage for pediatric patients is crucial. A maintenance dose of 24.1 mg/kg/day was found to maintain effective theophylline levels in children aged 3-12, reducing the need for frequent blood tests.
Area of Science:
- Pharmacokinetics and Pharmacodynamics
- Pediatric Pharmacology
- Drug Dosing Optimization
Context:
- Theophylline is a critical medication for managing pediatric respiratory conditions.
- Accurate dosing is essential to balance efficacy and minimize adverse effects.
- Current dosing strategies may require frequent therapeutic drug monitoring.
Purpose:
- To establish an optimal theophylline maintenance dose for pediatric patients.
- To minimize the number of plasma concentration controls needed.
- To achieve consistent therapeutic theophylline levels using a simplified dosing regimen.
Summary:
- This study analyzed the pharmacokinetics of aminophylline in 18 children (3-12 years old).
- An IV and oral loading dose was followed by pharmacokinetic sampling.
- A maintenance dose of 24.1 ± 4.7 mg/kg/day of slow-release theophylline was determined to maintain therapeutic concentrations.
Impact:
- Provides a refined theophylline dosing guideline for pediatric populations.
- Potentially reduces healthcare costs by decreasing the frequency of blood sample analysis.
- Enhances patient management by ensuring consistent therapeutic drug levels.
Abstract:
In order to defined the theophylline dose which produce effective theophylline concentrations with less number of plasmatic controls, we analyzed the theophylline pharmacokinetics of 18 boys and girls between 3-12 year olds of Tarragona, to which we administered 6 mg/kg/6 h of aminophylline by IV intermittent infusion (30 min), following by rapid-release PO aminophylline at the same dose and intervals. In steady-state we did the pharmacokinetic studies at 1 h, 4 h and 6 h after the administration of one dose. The maintenance dose obtained was administered PO as slow-release theophylline, with later controls of theophylline concentration. We found that maintenance dose of 24.1 +/- 4.7 mg/kg/day (mean +/- SD) allowed theophylline concentration between therapeutic levels in the population studied.