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Related Experiment Videos

Netilmicin use in pediatric patients

V Chindasilpa, V Schauf, L R Hamilton

    Developmental Pharmacology and Therapeutics
    |January 1, 1980
    PubMed
    Summary

    Netilmicin dosing in newborns requires careful consideration. Initial doses may be inadequate, necessitating adjusted intervals for infants under 7 days to ensure therapeutic levels and minimize potential toxicity.

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    Area of Science:

    • Pharmacology
    • Pediatric Medicine
    • Nephrology

    Background:

    • Netilmicin is an aminoglycoside antibiotic used in treating bacterial infections.
    • Understanding its pharmacokinetic profile in neonates and infants is crucial for safe and effective use.
    • Previous studies have indicated variability in aminoglycoside pharmacokinetics in this population.

    Purpose of the Study:

    • To evaluate the pharmacokinetics of netilmicin in newborn infants and children.
    • To determine optimal dosing strategies for neonates and infants based on age and renal function.
    • To assess the safety and tolerability of netilmicin in this patient group.

    Main Methods:

    • A cohort of 40 newborn infants and children received netilmicin.
    • Serum concentrations were monitored after initial and subsequent doses.
    • Pharmacokinetic parameters including peak and trough concentrations, half-life, and urinary recovery were analyzed.
    • Renal function was assessed, and adverse events were recorded.

    Main Results:

    • Initial netilmicin doses (2 mg/kg) resulted in average peak serum concentrations of 4.4 microgram/ml, often therapeutically inadequate.
    • Drug accumulation was not observed in patients with normal renal function.
    • Netilmicin half-life was 3.8 hours in infants older than 1 week.
    • Infants less than 7 days old required a 12-hour dose interval for adequate clearance.
    • Urinary recovery ranged from 50-100%, correlating with age and treatment duration.
    • Prolonged elimination occurred in infants with renal failure, necessitating dosage adjustments.
    • Transient changes in creatinine clearance (4.6%) and ototoxicity (2 cases) were observed.

    Conclusions:

    • Netilmicin dosing in neonates and infants requires age-specific adjustments, particularly for those under 7 days old.
    • A 12-hour dose interval is recommended for younger infants to achieve therapeutic efficacy.
    • Close monitoring of renal function and auditory function is advised due to potential adverse effects.

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