[Plasmatic concentracion of piperacillin/tazobactam in pediatric patients on ECMO support. Preliminary analysis]. / Concentraciones plasmáticas de piperacilina/tazobactam en pacientes pediátricos críticos sometidos a ECMO. Análisis preliminar.

BACKGROUND: Pharmacokinetics and optimal dosing of piperacillin tazobactam (PT) have not been well studied in pediatric patients undergoing extracorporeal oxygenation membrane (ECMO). AIM: To describe piperacillin plasmatic concentration and evaluate achievement of pharmaccokinetic/pharmacodinamic objective in patients on ECMO support. METHOD: We report three pediatric patients admitted to the Pediatric Intensive Care Unit, treated with PT undergoing ECMO. Plasmatic concentrations of piperacillin were obtained in the middle of the dosing interval using high performance liquid chromatography. RESULTS: Plasmatic concentrations were 51,7-14,1 and 6,5 µg/mL for patient A, B and C respectively. Only one patient reached adequate concentrations. CONCLUSION: These preliminary results suggest that availability of plasmatic concentrations of piperacillin could optimize the achievement of pharmacokinetic/pharmacodynamic objectives in pediatric patients on ECMO support.