Ceftazidime–Avibactam Pharmacokinetic Comparative In Vivo/In Vitro Study in a Critically Ill Children Under High‐Volume Continuous Venovenous Hemodiafiltration

Abstract

ABSTRACT Ceftazidime–avibactam is a novel cephalosporin/beta‐lactamase inhibitor combination developed to address increasing antimicrobial resistance. This report presents a comparative study of the pharmacokinetics of ceftazidime and avibactam, utilizing in vitro data derived from two experiments with continuous venovenous hemodiafiltration (CVVHDF) simulation and a comparison with a previously published in vivo case report. The results highlight the importance of therapeutic drug monitoring and the need for higher dosing or continuous infusion of ceftazidime–avibactam in critically ill children under crontinuous renal replacement therapy (CRRT).