Analysis of the results of implementing the monitoring of vancomycin concentration in pediatric patients using a Bayesian approach at Saint Paul General Hospital
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Abstract
Objective: To analyze the results of implementing the monitoring of drug concentration and adjusting vancomycin dosage in pediatric patients based on a Bayesian approach. Subject and method: This is a prospective observational study conducted on pediatric patients under 16 years old who meet the criteria of the vancomycin concentration monitoring procedure. The proposed vancomycin dosage regimen is estimated to achieve a target AUC24/MIC within the optimal range of 400-600 mg.hours/L, using a Bayesian approach on Precise PK program. The level of AKI is measured according to KDIGO 2012. The study is conducted at Saint Paul General Hospital from June 1, 2022, to June 1, 2023. Result: The study involved a total of 98 pediatric patients with a median age of 1.5 (0.57-3.35) years old having TDM vancomycin in the study period. The median initial dose was 58.8 (56.0-61.6) mg/kg/day and 23 (23.5%) patients attained the target AUC24/MIC at the first time, with a median of 355.81 (289.05-492.12) mg.h/L. After dose adjustment, the percentage of patients achieving the target AUC24/MIC of 400-600 mg.hour/L increased significantly, to 41.2% (14/34), 70% (7/10), and 100% (1/1) respectively after the second, third and fourth TDM. There was no AKI case recorded after treating with vancomycin. Conclusion: TDM vancomycin with AUC24/MIC target of 400-600 using Bayesian approach in pediatric patients plays an essential role in ensuring treatment effectiveness and minimizing toxicity when using vancomycin in this patient population.
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