Aminophylline therapy in children: guidelines for dosage

Area of Science:

• Pediatric Pharmacology
• Clinical Pharmacy
• Respiratory Medicine

Background:

• Aminophylline is a common bronchodilator used in pediatric asthma management.
• Maintaining therapeutic theophylline serum levels is crucial for efficacy and safety.
• Significant variability in drug metabolism exists among pediatric patients.

Purpose of the Study:

• To determine the oral aminophylline dosage required for therapeutic trough serum theophylline levels in children.
• To investigate age-related differences in aminophylline dosage requirements.
• To assess the consistency of serum theophylline levels with stable dosing regimens.

Main Methods:

• A study involving 150 pediatric patients aged 16 months to 19 years.
• Oral aminophylline dosage was administered to achieve target serum theophylline concentrations.
• Serum theophylline levels were frequently monitored to assess dosage requirements and patient variability.

Main Results:

• Dosage requirements for aminophylline were generally higher in children younger than 10 years.
• Marked inter-individual variability in the dose-to-serum level relationship was observed across all age groups.
• Consistent serum theophylline levels were generally maintained with stable oral aminophylline doses, though intercurrent illnesses could impact this.

Conclusions:

• Individualized oral aminophylline dosing based on frequent serum theophylline monitoring is essential.
• Personalized dosing strategies are necessary to maintain therapeutic theophylline levels and minimize toxicity risks in pediatric patients.
• The study highlights the need for careful dose titration in children receiving aminophylline therapy.