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Effect of formula feeding on oral absorption of caffeine in premature infants
G P Giacoia1, G L Jungbluth, W J Jusko
1Saint Francis Hospital Medical Research Institute of Pediatrics, Tulsa Medical College, Okla.
Insights
Caffeine absorption in premature infants is not affected by feeding. This study found that administering caffeine with or without formula equally achieved therapeutic drug levels, supporting concurrent administration with feedings.
Area of Science:
- Neonatal Pharmacology
- Pediatric Clinical Pharmacy
- Pharmacokinetics in Premature Infants
Background:
- Recurrent apnea is a common condition in premature infants, often managed with caffeine therapy.
- Understanding caffeine's absorption profile is crucial for optimizing treatment in this vulnerable population.
- The impact of feeding on oral drug absorption in neonates requires specific investigation.
Purpose of the Study:
- To evaluate the systemic absorption of orally administered caffeine in premature infants.
- To compare caffeine absorption when given in a fasted state versus immediately before formula feeding.
- To determine if feeding affects the rate and extent of caffeine absorption in premature neonates.
Main Methods:
- Sixteen premature infants receiving caffeine for recurrent apnea were enrolled.
- An oral bolus dose of caffeine (10 mg/kg) was administered.
- Absorption was assessed in two groups: fasted (n=8) and fed (n=8, immediately preceding formula), analyzing plasma concentration-time curves to estimate the absorption rate constant (ka) and area under the curve (AUC).
Main Results:
- Therapeutic plasma concentrations of caffeine were achieved rapidly after oral administration.
- Caffeine exhibited very slow elimination from the plasma.
- No significant differences were observed in the rate (ka) or extent (AUC) of caffeine absorption between the fasted and fed groups.
Conclusions:
- Oral caffeine administration is effective in achieving therapeutic levels in premature infants.
- The presence of formula does not alter the systemic absorption of caffeine.
- Caffeine can be safely administered concomitantly with infant feedings, simplifying treatment regimens.
Abstract:
The systemic absorption of orally administered caffeine was evaluated in 16 premature infants receiving therapy for recurrent apnea. An oral bolus dose of caffeine (10 mg/kg) was given during a fasted state (n = 8) or immediately preceding formula (n = 8). The first-order absorption rate constant (ka) was estimated from the rise in the plasma concentration-time curve and extent of absorption was estimated by the area under the concentration-time curve. Therapeutic concentrations of caffeine were achieved rapidly followed by very slow elimination of drug. No difference between the fasted and fed groups was found in the apparent rate or extent of caffeine absorption, suggesting that caffeine can be administered concomitantly with feedings.