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Published on: March 28, 2017
INTER-INDIVIDUAL VARIATION IN THEOPHYLLINE CLEARANCE IN CHILDREN
Mohammed Altamimi1, Imti Choonara1, Helen Sammons1
1Academic Division of Child Health, University of Nottingham, Derbyshire Children's Hospital.
This study found significant inter-individual variation in theophylline clearance among pediatric patients, particularly in neonates and critically ill children. Understanding this pharmacokinetic variability is crucial for optimizing drug therapy in children.
Area of Science:
- Pharmacokinetics
- Pediatric Pharmacology
- Drug Metabolism
Background:
- Limited research exists on inter-individual pharmacokinetic variability in children.
- Theophylline clearance exhibits significant variation in pediatric populations.
- This variability impacts drug efficacy and safety.
Purpose of the Study:
- To determine the extent of inter-individual variation in theophylline clearance in pediatric patients across different age groups.
- To analyze pharmacokinetic data from a systematic literature review.
Main Methods:
- Systematic literature review of Embase, Medline, CINAHL, International Pharmaceutical Abstracts, and Cochrane Library.
- Data extraction included plasma clearance ranges and coefficients of variation (CV).
- Analysis of 56 articles reporting on 1,315 pediatric patients.
Main Results:
- High inter-individual variation in theophylline clearance was observed across all pediatric age groups.
- The coefficient of variation (CV) ranged from 9-93% in preterm neonates to 4.5-43% in adolescents.
- Theophylline clearance was generally higher in children compared to neonates.
Conclusions:
- Significant inter-individual variation in theophylline clearance is a major concern in pediatric patients, especially those who are critically ill.
- Neonates exhibit higher inter-individual variation in theophylline clearance compared to older children and adolescents.
- Further research is needed to understand and manage this pharmacokinetic variability for improved therapeutic outcomes.
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