Vancomycin Population Pharmacokinetic Models in Non- Critically Ill Adults Patients: a scoping review.

Background: Vancomycin is an effective first-line therapy primarily in methicillin-resistant Staphylococcus aureus (MRSA) infection and Clostridium difficile, however, it has been shown that its effectiveness and the reduction of nephrotoxicity depend on maintaining adequate therapeutic levels. Population pharmacokinetic (PopPk) models attempt to parameterize the behavior of plasma concentrations in different target populations and scenarios such as renal replacement therapy, to successful therapeutic outcome and avoid these side effects.

Methods: A scoping review was conducted following the guidelines of Preferred Reporting Items for Systematic reviews and Meta-Analyses Extension for Scoping Reviews (PRISMA-ScR), through a search in PubMed, LILACS, OVID Medline, Scopus, Web of Science, SAGE Journals, Google Scholar and previous known registers of PopPk models in non-critically ill adult patients, published between 1998 and 2024.

Results: A total of 190 papers were fully screened, of which were included 36 studies conducted in different populations; 12 in general population, 23 in special populations (surgical, with impaired renal function, obese, elderly, with cancer and cystic fibrosis), and 1 in mixed population (general and with cancer). The main parameters in the models were renal clearance and volume of distribution. The principal covariables that affected the models were creatinine clearance and weight. All studies used internal evaluation and 4 of them used an external group.

Discussion: The technology for the development and implementation of PopPk models requires experts in clinical pharmacology and is limited to university and research centers. The software is mostly expensive and, in most cases, the pharmacokinetic models and the heterogeneity in the parameters and evaluation methods depend on which compartmental model, parameters, covariates and software have been used.

Conclusions: These models require validation in the clinical context and conducting experiments to adapt them for precision dosing in different subpopulations.