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Background: Vancomycin administration is challenging in critically ill patients because of pharmacokinetic changes and requires careful therapeutic drug monitoring (TDM) to guide the appropriate dosing for an effective serum concentration and to avoid toxicity.
Methods: We reported a one-year-old female pediatric patient with a body mass index of 15.4 had successful TDM-guided vancomycin therapy after a living donor liver transplantation for biliary atresia.
Results: The patient was admitted to the Intensive Care Unit for sepsis after her second liver transplantation. Even with the administration of the maximum approved vancomycin dosage (40 mg/kg/day), the serum trough levels were less than the recommended therapeutic level. After several adjustments based on TDM, a continuous pump infusion of up to 800 mg/day was needed to reach the desired serum trough concentration of > 10 µg/mL. Sepsis was controlled, and the patient was transferred from the Intensive Care Unit to the general ward and finally discharged home on a regular follow-up plan.
Conclusions: TDM-guided vancomycin continuous infusion may be an effective therapeutic option for pediatric patients after liver transplantation.
DOI: 10.7754/Clin.Lab.2023.230209
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