RT Journal Article SR Electronic A1 Santavy, Petr A1 Kubickova, Vendula A1 Sima, Martin A1 Urbanek, Karel T1 Population pharmacokinetics of three alternative prophylactic antibiotics during cardiac surgery with extracorporeal circulation JF Biomedical papers YR 2023 VO 167 IS 2 SP 208 OP 211 DO 10.5507/bp.2022.033 UL https://biomed.papers.upol.cz/artkey/bio-202302-0016.php AB Aims. The aim of this pharmacokinetic study was to describe and quantify population pharmacokinetics of three antibiotics, cefazolin, ampicillin, and ciprofloxacin, used as antibacterial prophylaxis during cardiovascular surgery with the use of extracorporeal circulation (ECC). Methods. Adult patients undergoing cardiac surgery with ECC were enrolled to this prospective, pharmacokinetic study. An intravenous bolus of 2 g of ampicillin, 2 g of cefazolin or 400 mg of ciprofloxacin was administered 60-30 min before surgery. Blood samples were collected at 15, 30, 45, 60, 120 and 180 min after the administration and at the end of the surgery. Plasma concentrations of the antibiotics were measured using HPLC methods. Serum concentration-time profiles were analyzed using nonlinear mixed-effects modeling approach. Results. A total of 54 patients were enrolled into the study, 20 with ampicillin, 25 cefazolin and 9 ciprofloxacin. For all antibiotics, population pharmacokinetic models have been successfully developed. Conclusion. We identified estimated glomerular filtration rate (eGFR) as the main factor determining the achievement of the pharmacokinetic/pharmacodynamic (PK/PD) target in ampicillin or cefazolin and body weight in ciprofloxacin prophylaxis during cardiac surgery with ECC support.