For several years, open abdomen with temporary abdominal closure using Negative Pressure Therapy (OA/NPT) has become one of the leading strategies to treat or prevent intra-abdominal hypertension in critically ill surgical patients after a wide range of complex abdominal injuries and conditions. According to current practice, piperacillin-tazobactam (PTZ) is widely used as part of empirical combined antibiotic therapy to treat severe abdominal infections in the critically ill patients. On the other hand, little is known about the impact of OA/NPT on antibiotics pharmacokinetics and pharmacodynamics (PK/PD) and the optimal dosing regimens in this population remain unclear. As PTZ is a small hydrophilic molecule with a very low level of protein binding, invesitigators hypothesized that OA/NPT should lead to significant changes in volume of distribution (Vd) and/or drug clearance (CL The main objective of this study was to assess the incidence of underdosing and the pharmacokinetics of piperacillin in critically ill patients with OA/NPT. The secondary objective was to assess the appropriateness of recommended regimens for empirical minimum inhibitory concentration (MIC) coverage.
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Rate of piperacillin
Timeframe: T1 (Day of the first surgical revision, up to 72 hours after inclusion)