Abstract
The monitoring of antimicrobial therapy through plasma levels makes it possible to determine the optimal dosage of antimicrobials, an essential approach in pediatrics. To describe the monitoring of plasma antimicrobial levels and dose adjustment in the pediatric population to determine if the doses used reach therapeutic ranges. Retrospective, descriptive study using a database with measurement of plasma levels of amikacin and vancomycin in pediatric patients at San Borja Arriarán Hospital between 2015-2018. The number of patients who reached the therapeutic range with the initial dose, how many required adjustment and their characteristics were determined. 104 total levels were monitored. For vancomycin 65 plasmatic levels were baseline, being outside the therapeutic range 56.5%; 25% of those requiring adjustment were neonates with a higher probability of being out of range versus others (p = 0.022). For amikacin, Cpeak was in range in 60% of measurements; 15.4% required adjustment, including patients with cystic fibrosis and cancer, without adjustments in patients without comorbidity. Measurement of plasma levels is necessary to individually adjust the dose, especially in pediatric patients with cystic fibrosis, oncology and in neonatology where it is more likely not to reach a therapeutic range with initial doses.
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