Gentamicin dosage in children with extensive burns

Area of Science:

• Pharmacology
• Pediatric Medicine
• Infectious Diseases

Background:

• Gram-negative bacillary infections are common in severely burned children.
• Standard gentamicin dosages may be insufficient in this patient population.

Purpose of the Study:

• To investigate gentamicin pharmacokinetics in severely burned children.
• To determine if standard dosing achieves therapeutic serum concentrations in this group.

Main Methods:

• Pharmacokinetic studies comparing serum gentamicin levels in burned versus unburned children.
• Clearance studies to investigate antibiotic loss or increased excretion.

Main Results:

• Mean peak serum gentamicin levels were significantly lower in 18 burned children compared to 5 unburned children.
• 15 of 18 burned children had inadequately low peak serum levels (<3.0 mug/ml).
• Increased gentamicin requirement may be due to loss across burn wounds or increased urinary excretion.

Conclusions:

• Severely burned children often require higher gentamicin doses and more frequent administration than typically recommended.
• Therapeutic drug monitoring is crucial for optimizing gentamicin therapy in pediatric burn patients.
• Adjusted dosing strategies are essential for effective treatment of infections in this vulnerable population.