Related Experiment Videos
Monitoring of theophylline treatment by saliva and plasma concentrations
K Juntunen-Backman1, A Backman, F Björkstén
1Allergy Hospital, Helsinki, Finland.
Insights
Saliva theophylline concentration measurement is a reliable and painless alternative to serum tests in children. Multiplying saliva levels by 1.6 estimates serum theophylline, making it suitable for pediatric asthma management.
Area of Science:
- Pharmacology
- Clinical Chemistry
- Pediatrics
Background:
- Theophylline is a crucial medication for managing pediatric asthma.
- Accurate monitoring of theophylline serum concentrations is essential for therapeutic efficacy and safety.
- Traditional serum sampling can be invasive and distressing for children.
Purpose of the Study:
- To investigate the correlation between serum and saliva theophylline concentrations in children.
- To evaluate the reliability of non-stimulated saliva theophylline measurements as a surrogate for serum levels.
- To compare the efficacy and safety of slow-release theophylline (Theo-Dur) versus ordinary theophylline in asthmatic children.
Main Methods:
- Studied 79 children to analyze the interdependence of serum and saliva theophylline levels.
- Measured saliva theophylline concentrations without stimulating saliva excretion.
- Compared theophylline pharmacokinetics between slow-release Theo-Dur and ordinary theophylline formulations.
Main Results:
- Non-stimulated saliva theophylline concentration reliably estimates serum levels when multiplied by 1.6.
- Saliva theophylline measurement is a comparable and less invasive alternative to serum determination, particularly in pediatric patients.
- Slow-release Theo-Dur (16-18 mg/kg/day in two doses) achieved stable and safe serum concentrations compared to ordinary theophylline (18-21 mg/kg/day in three doses).
Conclusions:
- Saliva theophylline monitoring offers a painless and reliable method for therapeutic drug monitoring in children.
- Slow-release theophylline formulations like Theo-Dur provide improved dosing convenience and stable therapeutic levels in pediatric asthma management.
Abstract:
The interdependence of serum and saliva theophylline concentrations was studied in a group of 79 children. Our results indicate that the measurement of saliva theophylline concentration, when the excretion of saliva is not stimulated, is reliable. The saliva theophylline concentration should be multiplied with the factor 1.6 to give an estimated serum concentration. Our results indicate that the use of saliva theophylline determination is comparable with the determination of serum concentration. The collection of saliva sample is painless compared with drawing a blood sample and the method is recommended, especially in pediatric use. The use of a slow-release theophylline preparation (Theo-Dur) was studied and compared with the use of ordinary theophylline in a group of asthmatic children. It was shown that the use of slow-release theophylline preparation (Theo-Dur) in a dose of 16-18 mg/kg/day divided in two daily doses gave a stable and safe serum concentration compared with ordinary theophylline in doses about 18-21 mg/kg/day divided in three doses.