Dose optimization and target attainment of vancomycin in children

Alessia Cafaro1, Manuela Stella2, Alessio Mesini3

  • 1Chromatography and Mass Spectrometry Section, Central Laboratory of Analysis, IRCCS Istituto Giannina, Gaslini, Genova, Italy.

Clinical Biochemistry
|February 7, 2024
PubMed

Insights

Optimizing vancomycin dosing in children is crucial. Area under the curve (AUC)-guided therapeutic drug monitoring (TDM), especially with Bayesian forecasting, improves drug efficacy and safety in pediatric patients.

Area of Science:

  • Pharmacology
  • Pediatric Infectious Diseases
  • Clinical Pharmacy

Background:

  • Vancomycin, a key antibiotic for gram-positive infections, has been used for over 70 years.
  • Optimal dosing and pharmacokinetic/pharmacodynamic (PK/PD) target attainment in pediatric populations remain challenging.
  • Current therapeutic drug monitoring (TDM) practices in children require refinement for vancomycin therapy.

Purpose of the Study:

  • To review current literature on vancomycin use in pediatric patients.
  • To summarize knowledge on optimizing vancomycin dosing for target attainment in special pediatric populations.
  • To highlight the benefits of AUC-guided TDM and Bayesian forecasting for vancomycin therapy in children.

Main Methods:

  • Literature review of pediatric vancomycin studies.
  • Analysis of pharmacokinetic/pharmacodynamic (PK/PD) data in children.
  • Evaluation of therapeutic drug monitoring (TDM) strategies, including AUC-guided and trough-only monitoring.
  • Assessment of Bayesian forecasting for predicting vancomycin exposure.

Main Results:

  • Area under the curve (AUC)-guided TDM is recommended over trough-only TDM for vancomycin in children.
  • AUC-guided TDM enhances PK/PD target attainment (AUC0-24h/MIC > 400–600) and reduces acute kidney injury risk.
  • Bayesian forecasting improves the accuracy of predicting individual vancomycin concentrations and total exposure in pediatric patients.

Conclusions:

  • AUC-guided TDM, ideally incorporating Bayesian forecasting, is suggested for all pediatric age groups and special populations.
  • This approach optimizes vancomycin efficacy and safety, ensuring better therapeutic outcomes.
  • Further research and clinical implementation of advanced TDM strategies are warranted for pediatric vancomycin therapy.

Related Concept Videos

Rational Dosage Regimen: Maintenance Dose and Loading Dose01:24

Rational Dosage Regimen: Maintenance Dose and Loading Dose

A rational dosage regimen considers a drug's pharmacokinetics, including its absorption, distribution, metabolism, and elimination from the body. By understanding these factors, the appropriate dosage can be determined, and the dosing schedule can be designed to achieve and maintain the desired therapeutic effect while minimizing adverse effects.
In most cases, drugs are administered repetitively or infused continuously to maintain a steady-state concentration in the body. At a steady...
4.1K
Drug Dosage Regimen: Overview01:15

Drug Dosage Regimen: Overview

A drug dosage regimen describes the specific instructions and schedule for administering a drug to a patient. It considers factors such as drug dosage, frequency, route of administration, and duration of treatment. Designing an appropriate dosage regimen for a patient aims to achieve a target drug concentration at the site of action.
Typically, the starting dose and dosing interval are guided by the manufacturer's recommendations based on clinical trials conducted during and after drug...
3.5K
Factors Affecting Drug Response: Overview01:21

Factors Affecting Drug Response: Overview

When it comes to infants and young children, they are typically administered smaller doses of medication in comparison to adults. This is primarily because their organ functions still need to fully develop, meaning their bodies are not as efficient at metabolizing or eliminating drugs. Additionally, their blood-brain barrier is more permeable than in adults. As a result, high concentrations of drugs can easily penetrate the central nervous system (CNS), potentially leading to neurological...
2.0K
Dosage Regimen: Fixed Dose01:01

Dosage Regimen: Fixed Dose

Fixed-dose regimens are a common approach to administer drugs to achieve and maintain desired levels of the drug in the body. In this dosing strategy, a specific amount of medication is given at regular intervals, often multiple times a day, to ensure a consistent drug concentration in the bloodstream.
Fixed-dose regimens can be used for various routes of administration, including intravenous (IV) injections and oral medications. For IV administration, a predetermined amount of the drug is...
1.9K
Renal Failure: Dose Adjustments01:11

Renal Failure: Dose Adjustments

In patients with renal impairment, drugs undergo significant changes in their pharmacokinetics, which require dosage adjustments to ensure safe and effective therapy.
Reduced renal clearance and elimination rate are common outcomes of renal impairment. These alterations lead to a prolonged elimination half-life and an altered apparent volume of distribution for drugs. As a result, dosage adjustments are typically necessary to maintain optimal drug levels in the body.
However, dosage adjustments...
89
Nonlinear Pharmacokinetics: Dependence of Elimination Half-Life and Dose Clearance01:23

Nonlinear Pharmacokinetics: Dependence of Elimination Half-Life and Dose Clearance

The elimination half-life and drug clearance of drugs following nonlinear kinetics can vary with dosage. The Michaelis-Menten parameters and drug concentration influence these factors. As the dose increases, the elimination half-life tends to lengthen, resulting in a reduction in clearance and a disproportionately larger area under the curve. The total clearance can be derived from the Michaelis-Menten equation for drugs following a one-compartment model.
A study on guinea pigs examined the...
138