Abstract

The risk of fungal, bacterial, and viral infections is higher in children with hematological and solid malignancies, particularly during periods of profound neutropenia. Although early administration of antimicrobial agents is common, optimizing pharmacological therapy in pediatric patients with cancer is challenging because of their variable pharmacokinetics compared with adults, including differences in body mass and augmented renal clearance, as well as chemotherapy-induced organ toxicity. Therapeutic drug monitoring, which involves measuring drug concentrations in serum or plasma at specific timepoints and adjusting doses accordingly, can be applied to various medications. While standardized targets for all antimicrobial agents in children are lacking, therapeutic drug monitoring appears to be beneficial in preventing serious toxicity and addressing treatment failure or non-compliance. This narrative review aims to analyze current perspectives on therapeutic drug monitoring for antimicrobial drugs in the special population of children with hematological or oncological diseases, including those undergoing hematopoietic cell transplantation. The review provides evidence on the clinical benefits of this method and explores potential future developments in this area.

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