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[Plasma digoxin concentration in different age groups (author's transl)]
Insights
Newborns have higher plasma digoxin concentrations than adults due to age-related differences in dose, distribution, and excretion. Premature newborns showed even higher levels compared to infants and children.
Area of Science:
- Pharmacokinetics
- Pediatric Pharmacology
- Neonatal Medicine
Context:
- Digoxin is a critical medication for treating heart conditions in various age groups.
- Understanding age-specific plasma digoxin concentrations is vital for safe and effective therapeutic drug monitoring.
- Previous research has indicated potential pharmacokinetic variations across pediatric populations.
Purpose:
- To determine and compare plasma digoxin concentrations in premature newborns, mature newborns, infants, children, and adults receiving maintenance digoxin therapy.
- To investigate the influence of age on digoxin pharmacokinetics, including dose, volume of distribution, and excretion rate.
Summary:
- Plasma digoxin concentrations were significantly higher in newborns compared to adults.
- Premature newborns exhibited the highest plasma digoxin concentrations among all studied age groups.
- Observed differences are attributed to variations in digoxin dose, volume of distribution, and excretion rates across different age demographics.
Impact:
- Provides crucial data for optimizing digoxin dosing strategies in pediatric and neonatal populations.
- Highlights the need for age-specific therapeutic drug monitoring guidelines for digoxin.
- Informs clinical practice regarding the safe and effective use of digoxin in neonates and children.
Abstract:
Plasma digoxin concentration during maintenance therapy with digoxin was determined in premature and mature newborns, infants, children and adults. The plasma digoxin concentration of newborns was significantly higher than in adults; in addition, in the group of premature newborns it also was higher than in infants and children. These differences in plasma digoxin concentrations may be explained by differences in dose, volume of distribution and excretion rate of digoxin in the various age groups.