Paracetamol loading dose administration in children: a retrospective study

Area of Science:

• Pediatric Pharmacology
• Clinical Pharmacy
• Drug Administration

Background:

• Paracetamol is a common analgesic and antipyretic in pediatric care.
• Optimal dosing strategies, including loading doses, are crucial for achieving therapeutic efficacy.
• Current administration practices for paracetamol loading doses in pediatric settings require evaluation.

Purpose of the Study:

• To assess the frequency of recommended paracetamol loading dose administration in a pediatric hospital.
• To investigate the necessity of paracetamol loading doses for reaching target therapeutic concentrations (10 mg/L) in neonates and children.

Main Methods:

• Retrospective study of neonates and children receiving intravenous or rectal paracetamol (Jan 2023 - Jan 2024).
• Evaluation of treatment periods with and without paracetamol loading doses.
• Pharmacokinetic simulations to model the impact of loading doses on paracetamol steady-state concentrations (Css).

Main Results:

• Loading doses were administered in only 21% of intravenous and 1% of rectal paracetamol treatments.
• Pharmacokinetic simulations demonstrated that loading doses rapidly achieve steady-state concentrations (Css).
• Without loading doses, Css was delayed by 12 hours (IV) and 18 hours (rectal).

Conclusions:

• Paracetamol loading doses are underutilized in this academic pediatric hospital.
• The absence of loading doses significantly delays the achievement of therapeutic paracetamol concentrations.
• Improvements in paracetamol treatment protocols for pediatric patients are warranted.