PMID- 32112965 OWN - NLM STAT- MEDLINE DCOM- 20200724 LR - 20200724 IS - 1878-3511 (Electronic) IS - 1201-9712 (Linking) VI - 93 DP - 2020 Apr TI - Impact of augmented renal clearance on the pharmacokinetics of linezolid: Advantages of continuous infusion from a pharmacokinetic/pharmacodynamic perspective. PG - 329-338 LID - S1201-9712(20)30102-8 [pii] LID - 10.1016/j.ijid.2020.02.044 [doi] AB - OBJECTIVES: The aim of this study was to assess the influence of renal function, in particular the presence of augmented renal clearance (ARC), on the pharmacokinetics of linezolid in critically ill patients. The effect of continuous infusion on the probability of therapeutic success from a pharmacokinetic/pharmacodynamic (PK/PD) perspective was also evaluated. METHODS: Seventeen patients received linezolid (600 mg every 12 h) as a 30-min infusion and 26 as a continuous infusion (50 mg/h). The PK parameters were calculated and the probability of PK/PD target attainment (PTA) was estimated by Monte Carlo simulation (MCS) for different doses administered by intermittent (600 mg every 12 h or 600 mg every 8 h) or continuous infusion (50 mg/h or 75 mg/h). RESULTS: In patients without ARC, the standard dose was adequate to attain the PK/PD target. However, linezolid clearance was significantly higher in ARC patients, leading to sub-therapeutic concentrations. Continuous infusion (50 mg/h) provided concentrations >/=2 mg/l in 70% of the ARC patients. MCS revealed that concentrations >/=2 mg/l would be reached in >90% of patients receiving 75 mg/h. CONCLUSIONS: ARC increases linezolid clearance and leads to a high risk of underexposure with the standard dose. Continuous infusion increases the PTA, but an infusion rate of 75 mg/h should be considered to ensure concentrations >/=2 mg/ml. CI - Copyright (c) 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved. FAU - Barrasa, Helena AU - Barrasa H AD - Intensive Care Unit, University Hospital of Alava, C/ Olaguibel 29, Vitoria-Gasteiz, Spain. FAU - Soraluce, Amaia AU - Soraluce A AD - Pharmacokinetics, Nanotechnology and Gene Therapy Group, Faculty of Pharmacy, Centro de Investigacion Lascaray-ikergunea, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain. FAU - Uson, Elena AU - Uson E AD - Intensive Care Unit, University Hospital of Alava, C/ Olaguibel 29, Vitoria-Gasteiz, Spain. FAU - Sainz, Javier AU - Sainz J AD - Intensive Care Unit, Doce de Octubre Hospital, Avda de Cordoba s/n, Madrid, Spain. FAU - Martin, Alejandro AU - Martin A AD - Intensive Care Unit, University Hospital of Alava, C/ Olaguibel 29, Vitoria-Gasteiz, Spain. FAU - Sanchez-Izquierdo, Jose Angel AU - Sanchez-Izquierdo JA AD - Intensive Care Unit, Doce de Octubre Hospital, Avda de Cordoba s/n, Madrid, Spain. FAU - Maynar, Javier AU - Maynar J AD - Intensive Care Unit, University Hospital of Alava, C/ Olaguibel 29, Vitoria-Gasteiz, Spain. FAU - Rodriguez-Gascon, Alicia AU - Rodriguez-Gascon A AD - Pharmacokinetics, Nanotechnology and Gene Therapy Group, Faculty of Pharmacy, Centro de Investigacion Lascaray-ikergunea, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain. FAU - Isla, Arantxazu AU - Isla A AD - Pharmacokinetics, Nanotechnology and Gene Therapy Group, Faculty of Pharmacy, Centro de Investigacion Lascaray-ikergunea, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain. Electronic address: arantxa.isla@ehu.eus. LA - eng PT - Journal Article DEP - 20200226 PL - Canada TA - Int J Infect Dis JT - International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases JID - 9610933 RN - 0 (Anti-Bacterial Agents) RN - ISQ9I6J12J (Linezolid) SB - IM MH - Adult MH - Anti-Bacterial Agents/administration & dosage/*pharmacokinetics/therapeutic use MH - *Critical Illness/therapy MH - Female MH - Humans MH - Kidney/*metabolism MH - Kidney Function Tests MH - Linezolid/administration & dosage/*pharmacokinetics/therapeutic use MH - Male MH - Metabolic Clearance Rate MH - Middle Aged MH - Monte Carlo Method OTO - NOTNLM OT - Augmented renal clearance OT - Continuous infusion OT - Critically ill patients OT - Linezolid OT - Pharmacokinetic/pharmacodynamics EDAT- 2020/03/01 06:00 MHDA- 2020/07/25 06:00 CRDT- 2020/03/01 06:00 PHST- 2019/12/09 00:00 [received] PHST- 2020/02/18 00:00 [revised] PHST- 2020/02/21 00:00 [accepted] PHST- 2020/03/01 06:00 [pubmed] PHST- 2020/07/25 06:00 [medline] PHST- 2020/03/01 06:00 [entrez] AID - S1201-9712(20)30102-8 [pii] AID - 10.1016/j.ijid.2020.02.044 [doi] PST - ppublish SO - Int J Infect Dis. 2020 Apr;93:329-338. doi: 10.1016/j.ijid.2020.02.044. Epub 2020 Feb 26.