“…The concentrations of IPM, MEPM, and DRPM in plasma and peritoneal fl uid were determined using high-performance liquid chromatography, as reported previously. [8][9][10] All pharmacokinetic data for each drug were fi tted to a standard three-compartment model, using the NONMEM program (version VI; ICON Development Solutions, Ellicott, MD, USA). The fi xed-effects parameters were the clearance (Cl), the volume of distribution of the central compartment (V1), the intercompartmental (centralperipheral) clearance (Q2), the volume of distribution of the peripheral compartment (V2), the intercompartmental (central-peritoneal) clearance (Q3), and the volume of Abstract This study aimed to develop breakpoints of carbapenems for intraabdominal infections, based on pharmacokinetics (PK) and pharmacodynamics (PD) at the target site.…”