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Barletta JF, Roberts JA. Precision medicine in the ICU: One size fits one patient. Pharmacotherapy 2023; 43:1100-1101. [PMID: 37840471 DOI: 10.1002/phar.2886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 10/05/2023] [Indexed: 10/17/2023]
Affiliation(s)
- Jeffrey F Barletta
- Department of Pharmacy Practice, College of Pharmacy-GlendaleCampus, Midwestern University, Glendale, Arizona, USA
| | - Jason A Roberts
- University of Queensland Centre for Clinical Research, Faculty of Medicine, The University of Queensland, Brisbane, Australia
- Herston Infectious Diseases Institute (HeIDI), Metro North Health, Brisbane, Australia
- Departments of Pharmacy and Intensive Care Medicine, Royal Brisbane and Women's Hospital, Brisbane, Australia
- Division of Anaesthesiology Critical Care Emergency and Pain Medicine, Nîmes University Hospital, University of Montpellier, Nîmes, France
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Liang D, Liang Z, Deng G, Cen A, Luo D, Zhang C, Ni S. Population pharmacokinetic analysis and dosing optimization of polymyxin B in critically ill patients. Front Pharmacol 2023; 14:1122310. [PMID: 37063299 PMCID: PMC10090446 DOI: 10.3389/fphar.2023.1122310] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/16/2023] [Indexed: 03/31/2023] Open
Abstract
Objectives: Since the global broadcast of multidrug-resistant gram-negative bacteria is accelerating, the use of Polymyxin B is sharply increasing, especially in critically ill patients. Unsatisfactory therapeutic effects were obtained because of the abnormal physiological function in critically ill patients. Therefore, the determination of optimal polymyxin B dosage becomes highly urgent. This study aimed to illustrate the polymyxin B pharmacokinetic characteristics by defining the influencing factors and optimizing the dosing regimens to achieve clinical effectiveness.Methods: Steady-state concentrations of polymyxin B from twenty-two critically ill patients were detected by a verified liquid chromatography-tandem mass spectrometry approach. The information on age, weight, serum creatinine, albumin levels, and Acute Physiology and Chronic Health Evaluation-II (APACHE-II) score was also collected. The population PK parameters were calculated by the non-parametric adaptive grid method in Pmetrics software, and the pharmacokinetic/pharmacodynamics target attainment rate was determined by the Monte Carlo simulation method.Results: The central clearance and apparent volume of distribution for polymyxin B were lower in critically ill patients (1.24 ± 0.38 L h-1 and 16.64 ± 12.74 L, respectively). Moreover, albumin (ALB) levels can be used to explain the variability in clearance, and age can be used to describe the variability in the apparent volume of distribution. For maintaining clinical effectiveness and lowering toxicity, 75 mg q12 h is the recommended dosing regimen for most patients suffering from severe infections.Conclusion: This study has clearly defined that in critically ill patients, age and ALB levels are potentially important factors for the PK parameters of polymyxin B. Since older critically ill patients tend to have lower ALB levels, so higher dosages of polymyxin B are necessary for efficacy.
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Affiliation(s)
- Danhong Liang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Zhi Liang
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Guoliang Deng
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Anfen Cen
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Dandan Luo
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
| | - Chen Zhang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
- *Correspondence: Chen Zhang, ; Suiqin Ni,
| | - Suiqin Ni
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou, Guangdong, China
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, Guangdong, China
- *Correspondence: Chen Zhang, ; Suiqin Ni,
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