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Stratton K, Davis KW. Case Report: Cefepime Induced Neurotoxicity Following a Change in Infusion Time. Hosp Pharm 2024; 59:411-414. [PMID: 38919756 PMCID: PMC11195832 DOI: 10.1177/00185787241237142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
Purpose: Cefepime is an antibiotic associated with cefepime induced neurotoxicity (CIN), particularly in those with reduced renal function, or in cases of inappropriate medication dosing. This report describes a case of CIN associated with a change in infusion duration from 180 to30 minutes, which to the best of our knowledge has not been previously reported in the literature. Summary: A 73-year old male was treated with extended infusion cefepime over 180 minutes while hospitalized with recurrent pneumonia. On discharge, cefepime was continued as outpatient parenteral antimicrobial therapy (OPAT) administered over 30 minutes. The patient began to experience symptoms of neurotoxicity after 1 day of receiving OPAT, which subsequently led to a readmission as neurological symptoms worsened. Cefepime was discontinued and symptoms resolved within 48 hours. Renal function was stable throughout treatment and no other causes for neurotoxicity were noted. Conclusion: This is a unique case of CIN secondary to shortened infusion time, which is clinically relevant, particularly during transitions of care. Further investigation, including more widespread use of therapeutic drug monitoring will be beneficial to further elucidate the relationship between infusion time and CIN development.
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Burch AR, von Arx L, Hasse B, Neumeier V. Extended Infusion of Beta-Lactams and Glycopeptides: A New Era in Pediatric Care? A Systematic Review and Meta-Analysis. Antibiotics (Basel) 2024; 13:164. [PMID: 38391550 PMCID: PMC10886114 DOI: 10.3390/antibiotics13020164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/03/2024] [Accepted: 02/05/2024] [Indexed: 02/24/2024] Open
Abstract
Optimizing antibiotic therapy is imperative with rising bacterial resistance and high infection mortality. Extended infusion defined as a continuous infusion (COI) or prolonged infusion (PI) of beta-lactams and glycopeptides might improve efficacy and safety compared to their intermittent administration (IA). This study aimed to evaluate the efficacy and safety of extended infusion in pediatric patients. Adhering to Cochrane standards, we conducted a systematic review with meta-analysis investigating the efficacy and safety of COI (24 h/d) and PI (>1 h/dose) compared to IA (≤1 h/dose) of beta-lactams and glycopeptides in pediatrics. Primary outcomes included mortality, clinical success, and microbiological eradication. Five studies could be included for the outcome mortality, investigating meropenem, piperacillin/tazobactam, cefepime, or combinations of these. The pooled relative risk estimate was 0.48 (95% CI 0.26-0.89, p = 0.02). No significant differences between the administration modes were found for the outcomes of clinical success, microbiological eradication (beta-lactams; glycopeptides), and mortality (glycopeptides). No study reported additional safety issues, e.g., adverse drug reactions when using COI/PI vs. IA. Our findings suggest that the administration of beta-lactams by extended infusion leads to a reduction in mortality for pediatric patients.
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Affiliation(s)
- Andrea Rahel Burch
- Department of Pharmaceutical Sciences, University of Basel, 4000 Basel, Switzerland
- University Hospital Zurich, Hospital Pharmacy, 8006 Zurich, Switzerland
| | - Lukas von Arx
- University Hospital Zurich, Hospital Pharmacy, 8006 Zurich, Switzerland
- Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology (ETH Zurich), 8049 Zurich, Switzerland
| | - Barbara Hasse
- Department of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, 8006 Zurich, Switzerland
- University of Zurich, 8050 Zurich, Switzerland
| | - Vera Neumeier
- University Hospital Zurich, Hospital Pharmacy, 8006 Zurich, Switzerland
- University of Zurich, 8050 Zurich, Switzerland
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Roberts JA, Croom K, Adomakoh N. Continuous infusion of beta-lactam antibiotics: narrative review of systematic reviews, and implications for outpatient parenteral antibiotic therapy. Expert Rev Anti Infect Ther 2023; 21:375-385. [PMID: 36867528 DOI: 10.1080/14787210.2023.2184347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
INTRODUCTION Continuous infusion (CI) of beta-lactam antibiotics may be of benefit in some patients, particularly those with severe infections. However, most studies have been small and conflicting results have been reported. The best available evidence on clinical outcomes of beta-lactam CI comes from systematic reviews/meta-analyses that integrate the available data. AREAS COVERED A search of PubMed from inception to the end of February 2022 for systematic reviews of clinical outcomes with beta-lactam CI for any indication identified 12 reviews, all of which focused on hospitalized patients, most of whom were critically ill. A narrative overview of these systematic reviews/meta-analyses is provided. No systematic reviews evaluating the use of beta-lactam CI for outpatient parenteral antibiotic therapy (OPAT) were identified, as few studies have focused on this area. Relevant data are summarized, and consideration is given to issues that need to be addressed when using beta-lactam CI in the setting of OPAT. EXPERT OPINION Evidence from systematic reviews supports a role for beta-lactam CI in the treatment of hospitalized patients with severe/life-threatening infections. Beta-lactam CI can play a role in patients receiving OPAT for severe chronic/difficult-to-treat infections, but additional data are needed to clarify its optimal use.
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Affiliation(s)
- 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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4
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Imburgia TA, Engdahl SR, Pettit RS. Evaluation of the safety of cefepime prolonged infusions in pediatric patients with cystic fibrosis. Pediatr Pulmonol 2022; 57:919-925. [PMID: 34989183 DOI: 10.1002/ppul.25817] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 12/29/2021] [Accepted: 01/04/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Pediatric cystic fibrosis (CF) patients possess unique pharmacokinetics and may benefit from prolonged beta-lactam infusions to optimize pharmacodynamics. This study compared adverse drug event (ADE) rates with cefepime prolonged (PI) and standard infusions (SI). METHODS This retrospective study included pediatric patients treated with cefepime for CF exacerbations between 2009 and 2019. One encounter per patient was analyzed with prioritization of SI encounters given sample size limitations. Baseline lab abnormalities, seizure disorders, and bleeding were exclusion criteria. The primary outcome was a composite safety endpoint (acute kidney injury [AKI], hepatotoxicity, hematologic toxicity, neurotoxicity, and hypersensitivity). RESULTS Of 188 patients, 135 received PI and 53 received SI. Baseline characteristics were similar between groups. More PI patients used CF transmembrane conductance regulator (CFTR) modulators (25% vs. 0%, p < 0.01) or had antibiotic allergies (62% vs. 38%, p = 0.02). Difference in rates of composite safety endpoint was not statistically significant between PI and SI (21 [15.6%] vs. 6 [11.3%] p = 0.46) nor was incidence of AKI (16 [11.8%] vs. 6 [11.3%], p = 0.92). Other ADEs were rarely observed. Length of stay (12.2 vs. 10.1 days, p = 0.06), change in discharge ppFEV1 from admission (13 vs. 12, p = 0.91) or from baseline (-4 vs. -6.5, p = 0.33), and time to next exacerbation (249.7 vs. 192.5 days, p = 0.93) were similar. CONCLUSIONS No difference in risk of ADEs including AKI was seen with cefepime PI in pediatric CF patients. Clinical outcomes were not significantly different between groups, but sample size may have limited comparison. PI cefepime may be considered in pediatric CF patients to optimize pharmacodynamics.
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Affiliation(s)
- Taylor A Imburgia
- Department of Pharmacy, West Virginia University Medicine Children's, Morgantown, West Virginia, USA
| | - Samantha R Engdahl
- Department of Pharmacy, Riley Hospital for Children at Indiana University Health, Indianapolis, Indiana, USA
| | - Rebecca S Pettit
- Department of Pharmacy, Riley Hospital for Children at Indiana University Health, Indianapolis, Indiana, USA
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Ruiz-Ramos J, Herrera-Mateo S, López-Vinardell L, Juanes-Borrego A, Puig-Campmany M, Mangues-Bafalluy MA. Cefepime Dosing Requirements in Elderly Patients Attended in the Emergency Rooms. Dose Response 2022; 20:15593258221078393. [PMID: 35237115 PMCID: PMC8883311 DOI: 10.1177/15593258221078393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 01/17/2022] [Accepted: 01/17/2022] [Indexed: 11/15/2022]
Abstract
Objective This study aimed to assess the probability of reaching an adequate pharmacokinetic/pharmacodynamic (pK/pD) index for different cefepime dosages in frail patients with bacteremia treated in the emergency room. Methods Simulation study based on Gram-negative bacterial strains that cause bacteremia. The probability of reaching a time above the minimum inhibitory concentration (MIC) at 50% and 100% dosing intervals (fT > 50 and fT > 80% MIC) was assessed for two different renal clearance intervals. Results One hundred twenty nine strains were collected, the predominant species being Escherichia coli (n = 83 [64.3%]). In patients with a ClCr of 30 mL/min, an fT > 50% MIC was reached in more than 90% of the simulations. However, a dose of at least 1 g every 12 h must be administered to reach an fT > 80% MIC. In patients with a ClCr of 30–60 mL/min, the probability of reaching an fT > 50% MIC was higher than 90% with doses of 1 g every 8 h or more, but this value was not reached in > 90% simulations for any of the doses tested in this study. Conclusions Standard cefepime dosing can reach an adequate PK/PD index in frail patients. Nevertheless, a high dose or extended infusion is necessary to reach an fT > 80% MIC in patients with a ClCr > 60 mL/min.
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Affiliation(s)
- Jesus Ruiz-Ramos
- Pharmacy Department, Hospital Santa Creu I Sant Pau, Barcelona, Spain
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Álvarez JC, Cuervo SI, Silva E, Díaz JA, Jiménez LL, Parra DS, Gómez JC, Sánchez R, Cortés JA. Pharmacokinetics and Pharmacodynamics of Cefepime in Adults with Hematological Malignancies and Febrile Neutropenia after Chemotherapy. Antibiotics (Basel) 2021; 10:504. [PMID: 33946665 PMCID: PMC8146514 DOI: 10.3390/antibiotics10050504] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/17/2021] [Accepted: 04/21/2021] [Indexed: 12/04/2022] Open
Abstract
Patients with chemotherapy-induced febrile neutropenia (CIFN) may have changes in the pharmacokinetics (PK) compared to patients without malignancies or neutropenia. Those changes in antibiotic PK could lead to negative outcomes for patients if the therapy is not adequately adjusted to this. In this, open-label, non-randomized, prospective, observational, and descriptive study, a PK model of cefepime was developed for patients with hematological neoplasms and post-chemotherapy febrile neutropenia. This study was conducted at a cancer referral center, and study participants were receiving 2 g IV doses of cefepime every 8 h as 30-min infusions. Cefepime PK was well described by a two compartment model with a clearance dependent on a serum creatinine level. Using Monte Carlo simulations, it was shown that continuous infusions of 6g q24h could have a good achievement of PK/PD targets for MIC levels below the resistance cut-off point of Enterobacteriaceae. According to the simulations, it is unnecessary to increase the daily dose of cefepime (above 6 g daily) to increase the probability of target attainment (PTA). Cumulative fraction of response (CFR) using interment dosing was suboptimal for empirical therapy regimens against K. pneumoniae and P. aeruginosa, and continuous infusions could be used in this setting to maximize exposure. Patients with high serum creatinine levels were more likely to achieve predefined PK/PD targets than patients with low levels.
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Affiliation(s)
- José C Álvarez
- Facultad de Medicina, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
| | - Sonia I Cuervo
- Facultad de Medicina, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Instituto Nacional de Cancerología (INC)-Empresa Social del Estado, 111511 Bogotá, Colombia
| | - Edelberto Silva
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
| | - Jorge A Díaz
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Grupo de Investigación en Enfermedades Infecciosas, Facultad de Medicina, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
| | - Lorena L Jiménez
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Instituto Nacional de Cancerología (INC)-Empresa Social del Estado, 111511 Bogotá, Colombia
| | - Daniel S Parra
- Departamento de Farmacia, Facultad de Ciencias, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
| | - Julio C Gómez
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Instituto Nacional de Cancerología (INC)-Empresa Social del Estado, 111511 Bogotá, Colombia
| | - Ricardo Sánchez
- Facultad de Medicina, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Grupo en Enfermedades Infecciosas en Cáncer y Alteraciones Hematológicas (GREICAH), Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Instituto Nacional de Cancerología (INC)-Empresa Social del Estado, 111511 Bogotá, Colombia
| | - Jorge A Cortés
- Facultad de Medicina, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
- Grupo de Investigación en Enfermedades Infecciosas, Facultad de Medicina, Universidad Nacional de Colombia, 111321 Bogotá, Colombia
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Thabet P, Joshi A, MacDonald E, Hutton B, Cheng W, Stevens A, Kanji S. Clinical and pharmacokinetic/dynamic outcomes of prolonged infusions of beta-lactam antimicrobials: An overview of systematic reviews. PLoS One 2021; 16:e0244966. [PMID: 33481817 PMCID: PMC7822342 DOI: 10.1371/journal.pone.0244966] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 12/19/2020] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE This overview of reviews aims to map and compare of objectives, methods, and findings of existing systematic reviews to develop a greater understanding of the information available about prolonged beta-lactam infusions in hospitalized patients with infection. DESIGN Overview of systematic reviews. DATA SOURCES Medline, Embase, PROSPERO and the Cochrane Library were systematically searched from January, 1990 to June, 2019 using a peer reviewed search strategy. Grey literature was also searched for relevant reviews. ELIGIBILITY CRITERIA FOR SELECTING REVIEWS Systematic reviews were sought that compared two or more infusion strategies for intravenous beta-lactam antimicrobials and report clinical cure or mortality. Populations of included reviews were restricted to hospitalized patients with infection, without restrictions on age, infection type, or disease. DATA EXTRACTION AND ANALYSIS Abstract screening, data extraction, quality and risk of bias assessment were conducted by two independent reviewers. Overlap between reviews was assessed using a modified corrected covered area. Overview findings are reported in accordance with Cochrane's recommendation for overview conduct. Clinical outcomes extracted included survival, clinical cure, treatment failure, microbiological cure, length of stay, adverse events, cost, and emergence of resistance. RESULTS The search strategy identified 3327 unique citations from which 21 eligible reviews were included. Reviews varied by population, intervention and outcomes studied. Between reviews, overlap of primary studies was generally high, methodologic quality generally low and risk of bias variable. Nine of 14 reviews that quantitatively evaluated mortality and clinical cure identified a benefit with prolonged infusions of beta lactams when compared with intermittent infusions. Evidence of mortality and clinical cure benefit was greater among critically ill patients when compared to less sick patients and lower in randomized controlled trials when compared with observational studies. CONCLUSIONS Findings from our review demonstrate a consistent and reproducible lack of harm with prolonged infusions of beta-lactam antibiotics with variability in effect size and significance of benefits. Despite 21 systematic reviews addressing prolonged infusions of beta-lactams, this overview supports the continued need for a definitive systematic review given variability in populations, interventions and outcomes in the current systematic reviews. Subsequent systematic reviews should have more rigorous and transparent methods, only include RCTs and evaluate the proposed benefits found in various subgroup-analyses-i.e. high risk of mortality. TRIAL REGISTRATION Prospero registry, CRD42019117118.
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Affiliation(s)
| | - Anchal Joshi
- University of Waterloo, Waterloo, Ontario, Canada
| | | | - Brian Hutton
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- University of Ottawa School of Epidemiology and Public Health, Ottawa, Canada
| | - Wei Cheng
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | | | - Salmaan Kanji
- The Ottawa Hospital, Ottawa, Ontario, Canada
- Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- University of Ottawa School of Epidemiology and Public Health, Ottawa, Canada
- * E-mail:
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8
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Cefepime therapeutic drug monitoring: Evaluation of agreement between peripheral and central venous blood sampling. Clin Chim Acta 2020; 510:450-454. [PMID: 32795542 DOI: 10.1016/j.cca.2020.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 08/07/2020] [Accepted: 08/07/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Therapeutic drug monitoring for cefepime is increasingly being performed because of the potential relation between exposure and neurotoxicity. An in vitro pilot study suggested significant carryover of cefepime from central venous catheters when blood sampling is carried out via the same catheter used for administration of cefepime. Therefore, the aim of this study was to evaluate carryover of cefepime in a real-life clinical setting. METHODS A prospective single-center study was conducted at the hematology department of the University Hospitals Leuven. Patients treated with cefepime, and having a central venous catheter, were included. Cefepime trough samples were taken simultaneously via the central venous catheter and peripheral venepuncture. RESULTS Twenty-four patients were included in this study, resulting in 28, 11 and 5 paired samples for tunnelled catheters, implantable port catheters and peripherally inserted central catheters, respectively. No statistically nor clinically significant difference was found between cefepime concentrations measured in centrally versus peripherally obtained blood samples, overall and for all three types of central venous catheters separately. Of note, four paired samples showed a difference larger than 10%, with lower central concentrations probably reflecting a dilution error. CONCLUSION There was no significant carryover of cefepime from long-term central venous catheters. Cefepime samples can be drawn reliably via the central venous catheter, after flushing and discarding the first blood sample. Although, flushing and discard volumes should be standardized to avoid potential dilution errors.
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Vercheval C, Sadzot B, Maes N, Denooz R, Damas P, Frippiat F. Continuous infusion of cefepime and neurotoxicity: a retrospective cohort study. Clin Microbiol Infect 2020; 27:S1198-743X(20)30386-4. [PMID: 32653661 DOI: 10.1016/j.cmi.2020.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 06/26/2020] [Accepted: 07/01/2020] [Indexed: 12/26/2022]
Abstract
OBJECTIVES Neurotoxicity related to cefepime is increasingly reported in the literature but specific data concerning continuous infusion (CI) of the drug are still lacking. Our primary objective was to evaluate the incidence of neurotoxicity related to CI of cefepime and the associated risk factors. Our secondary objectives were to analyse the plasma cefepime concentrations and to define the threshold above which neurotoxicity occurs. METHODS In this single-centre retrospective cohort study, all adult patients who underwent at least one cefepime therapeutic drug monitoring (TDM) and were treated with CI of 4 g/day between January 2017 and June 2019 were included. Neurotoxicity was evaluated according to a strict definition and was correlated with steady-state concentration at the time of toxicity presentation. RESULTS Ninety-eight patients with 201 cefepime TDM studies were included, with an incidence of neurotoxicity of 14.3% (14/98). Patients with neurotoxicity had more often underlying brain disease (35.7% (5/14) vs 11.9% (10/84), p = 0.030)) and higher steady-state concentrations (mean ± standard deviation 71.8 ± 32.9 mg/L vs 49.6 ± 30.6, p = 0.036) than the others. A receiver operating characteristic curve analysis yielded a cefepime steady-state concentration of 63.2 mg/L as the best cut-off point between patients with or without neurotoxicity. A mean steady-state concentration of 46.4 mg/L was achieved if the dosages of cefepime were adapted to renal function which was under our threshold concentration but above our highest pharmacokinetic/pharmacodynamic target of 32-40 mg/L. CONCLUSIONS Our results suggest that 4 g/day of cefepime adapted to renal function and infused over 24 h is a trade-off for the risk/benefit ratio, when used empirically.
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Affiliation(s)
- C Vercheval
- Department of Clinical Pharmacy, University Hospital of Liège, Liège, Belgium; Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium.
| | - B Sadzot
- Department of Neurology, University Hospital of Liège, Liège, Belgium
| | - N Maes
- Department of Biostatistics and Medico-Economic Information, University Hospital of Liège, Liège, Belgium
| | - R Denooz
- Center for Interdisciplinary Research on Medicines (CIRM), University of Liège, Liège, Belgium; Laboratory of Clinical, Forensic, Industrial and Environmental Toxicology, University Hospital of Liege, Belgium
| | - P Damas
- Department of Intensive Care Unit, University Hospital of Liège, Liège, Belgium
| | - F Frippiat
- Department of Infectious Diseases and General Internal Medicine, University Hospital of Liège, Liège, Belgium
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10
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Mameli M, Vezzelli A, Verze' S, Biondi S, Motta P, Greco A, Michi M, Breda M. Liquid chromatography-tandem mass spectrometry for the simultaneous quantitation of enmetazobactam and cefepime in human plasma. J Pharm Biomed Anal 2019; 174:655-662. [PMID: 31288188 DOI: 10.1016/j.jpba.2019.06.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 10/26/2022]
Abstract
A simple ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method was developed and validated for the simultaneous analysis enmetazobactam (also known as AAI101) and cefepime in human plasma. Sample preparation was based on protein precipitation with acetonitrile. Separation was performed on Acquity BEH HILIC column (50 mm × 2.1 mm, 1.7 μm) with a mobile phase containing ammonium formate in water and acetonitrile. The analytes were analyzed with the corresponding isotopically labeled internal standards and were detected in multiple reactions monitoring (MRM) using API 5000 triple-quadrupole mass spectrometer with electrospray (ESI) source operating in positive ion mode. The calibration curves were linear over the selected ranges (r > 0.9970 for both analytes). The intra and inter-assay precision of the Quality Control samples showed CV ≤ 15% and the accuracy was within 85 and 115% in all cases for both compounds. The lower limit of quantification was 0.05 μg/mL for enmetazobactam and 0.5 μg/mL for cefepime.
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Affiliation(s)
- M Mameli
- Aptuit (Verona) S.r.l., an Evotec Company, Bioanalytical Group, Verona, Italy
| | - A Vezzelli
- Aptuit (Verona) S.r.l., an Evotec Company, Bioanalytical Group, Verona, Italy
| | - S Verze'
- Aptuit (Verona) S.r.l., an Evotec Company, Bioanalytical Group, Verona, Italy
| | - S Biondi
- Allecra Therapeutics SAS, 10 rue Alexandre Freund, 68300, Saint Louis, France
| | - P Motta
- Allecra Therapeutics SAS, 10 rue Alexandre Freund, 68300, Saint Louis, France
| | - A Greco
- Aptuit (Verona) S.r.l., an Evotec Company, Bioanalytical Group, Verona, Italy
| | - M Michi
- Aptuit (Verona) S.r.l., an Evotec Company, Bioanalytical Group, Verona, Italy
| | - M Breda
- Aptuit (Verona) S.r.l., an Evotec Company, Bioanalytical Group, Verona, Italy.
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Chen H, Yu L, Yu Z. Prolonged infusion with β-lactam antibiotics for treatment of infection caused by non-susceptible bacteria: a study protocol for a systemic review and meta-analysis. BMJ Open 2019; 9:e027509. [PMID: 31122992 PMCID: PMC6538082 DOI: 10.1136/bmjopen-2018-027509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/27/2019] [Accepted: 04/30/2019] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Prolonged infusion with β-lactam antibiotics should theoretically produce a better clinical efficacy than intermittent infusion in severe infection and infection caused by non-susceptible micro-organisms. The efficacy of prolonged infusion in severe infection has been well illustrated recently, but is still confusing in non-susceptible microbial infection. The objective of this meta-analysis is to determine the clinical effects of prolonged infusion with β-lactams for patients infected by microbes non-susceptible to the given drug. METHODS AND ANALYSIS Literature searches will be performed with Medline, the Cochrane database, EMBASE database, Cumulative Index to Nursing and Allied Health Literature database, the Chinese National Knowledge Infrastructure and Wanfang database. Two reviewers will screen and select studies according to a priori defined eligibility criteria, and then the data from the included studies will be extracted. The quality will be evaluated based on a modified Jadad score and the Newcastle-Ottawa system for randomised controlled trials and observational studies, respectively. Data synthesis will be performed with Review Manager 5.3 software. Sensitivity analysis and publication bias will also be investigated. ETHICS AND DISSEMINATION No ethics approval is required. The full article will be published in a peer-reviewed journal and presented at international conferences. PROSPERO REGISTRATION NUMBER CRD42018105111.
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Affiliation(s)
- Huadong Chen
- Department of Pharmacy, Dongyang People’s Hospital, Dongyang, Zhejiang, China
| | - Lingyan Yu
- Department of Pharmacy, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhenwei Yu
- Department of Pharmacy, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
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Schlidt K, Kadlec A, Bhandari S, Jha P. Cefepime-induced Neurotoxicity: Five Cases Reported in a Single Institution. Cureus 2018; 10:e3666. [PMID: 30740285 PMCID: PMC6355299 DOI: 10.7759/cureus.3666] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Cefepime is a fourth-generation cephalosporin widely used to treat gram-positive and gram-negative infections. Its half-life is approximately two hours in patients with normal renal function and may increase to 13.5 hours in patients with acutely or chronically impaired renal function. Although dosage adjustment is recommended for patients with renal insufficiency to prevent drug accumulation, toxicity has been reported in patients even with normal renal function. One underreported complication of cefepime toxicity is cefepime-induced encephalopathy (CIE). While the pathophysiology is unclear, treatment involves early discontinuation of this antibiotic to decrease morbidity and mortality. We report five cases of cefepime-induced encephalopathy occurring within one year at a single institution.
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Affiliation(s)
- Kevin Schlidt
- Student, Medical College of Wisconsin, Wauwatosa, USA
| | - Andrew Kadlec
- Student, Medical College of Wisconsin, Wauwatosa, USA
| | | | - Pinky Jha
- Medicine, Medical College of Wisconsin, Brookfield, USA
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Veiga RP, Paiva JA. Pharmacokinetics-pharmacodynamics issues relevant for the clinical use of beta-lactam antibiotics in critically ill patients. Crit Care 2018; 22:233. [PMID: 30244674 PMCID: PMC6151903 DOI: 10.1186/s13054-018-2155-1] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 08/08/2018] [Indexed: 12/15/2022] Open
Abstract
Antimicrobials are among the most important and commonly prescribed drugs in the management of critically ill patients and beta-lactams are the most common antibiotic class used. Critically ill patient's pathophysiological factors lead to altered pharmacokinetics and pharmacodynamics of beta-lactams.A comprehensive bibliographic search in PubMed database of all English language articles published from January 2000 to December 2017 was performed, allowing the selection of articles addressing the pharmacokinetics or pharmacodynamics of beta-lactam antibiotics in critically ill patients.In critically ill patients, several factors may increase volume of distribution and enhance renal clearance, inducing high intra- and inter-patient variability in beta-lactam concentration and promoting the risk of antibiotic underdosing. The duration of infusion of beta-lactams has been shown to influence the fT > minimal inhibitory concentration and an improved beta-lactam pharmacodynamics profile may be obtained by longer exposure with more frequent dosing, extended infusions, or continuous infusions.The use of extracorporeal support techniques in the critically ill may further contribute to this problem and we recommend not reducing standard antibiotic dosage since no drug accumulation was found in the available literature and to maintain continuous or prolonged infusion, especially for the treatment of infections caused by multidrug-resistant bacteria.Prediction of outcome based on concentrations in plasma results in overestimation of antimicrobial activity at the site of infection, namely in cerebrospinal fluid and the lung. Therefore, although no studies have assessed clinical outcome, we recommend using higher than standard dosing, preferably with continuous or prolonged infusions, especially when treating less susceptible bacterial strains at these sites, as the pharmacodynamics profile may improve with no apparent increase in toxicity.A therapeutic drug monitoring-guided approach could be particularly useful in critically ill patients in whom achieving target concentrations is more difficult, such as obese patients, immunocompromised patients, those infected by highly resistant bacterial strains, patients with augmented renal clearance, and those undergoing extracorporeal support techniques.
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Affiliation(s)
- Rui Pedro Veiga
- Centro Hospitalar São João, EPE – Intensive Care Department, Porto, Portugal
- Faculty of Medicine – University of Porto, Porto, Portugal
- Grupo Infeção e Sepsis, Porto, Portugal
| | - José-Artur Paiva
- Centro Hospitalar São João, EPE – Intensive Care Department, Porto, Portugal
- Faculty of Medicine – University of Porto, Porto, Portugal
- Grupo Infeção e Sepsis, Porto, Portugal
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Clinical outcomes of prolonged infusion (extended infusion or continuous infusion) versus intermittent bolus of meropenem in severe infection: A meta-analysis. PLoS One 2018; 13:e0201667. [PMID: 30059536 PMCID: PMC6066326 DOI: 10.1371/journal.pone.0201667] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 07/19/2018] [Indexed: 11/19/2022] Open
Abstract
Background Meropenem exhibits time-dependent antimicrobial activity and prolonged infusion (PI) (extended infusion or continuous infusion, EI or CI) of meropenem can better achieve pharmacodynamics target when comparing with intermittent bolus (IB). However, the clinical outcomes between two groups remain inconclusive. Objective To evaluate current published literatures by meta-analysis to ascertain whether PI of meropenem can improve clinical outcomes. Methods Medline, Cochrane database and EMBASE were searched. Randomized control trails (RCT) and observational studies which compared the clinical outcomes of PI and IB groups were included and evaluated for quality. The data of studies were extracted and meta-analysis was performed using Revman 5.3 software. Results Six RCTs and 4 observation studies with relatively high quality were included in this analysis. Compared to IB group, PI group had a higher clinical success rate (odd ratio 2.10, 95% confidence interval 1.31–3.38) and a lower mortality (risk ratio 0.66, 95% confidence interval 0.50–0.88). The sensitivity analysis showed the results were stable. Conclusion PI of meropenem was associated with a higher clinical improvement rate and a lower mortality. It is recommended for patients with severe infection or infected by less sensitive microbial.
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Kassel LE, Van Matre ET, Foster CJ, Fish DN, Mueller SW, Sherman DS, Wempe MF, MacLaren R, Neumann RT, Kiser TH. A Randomized Pharmacokinetic and Pharmacodynamic Evaluation of Every 8-Hour and 12-Hour Dosing Strategies of Vancomycin and Cefepime in Neurocritically ill Patients. Pharmacotherapy 2018; 38:921-934. [PMID: 29906310 DOI: 10.1002/phar.2156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
PURPOSE Neurocritically ill patients have clinically significant alterations in pharmacokinetic parameters of renally eliminated medications that may result in subtherapeutic plasma and cerebrospinal fluid antibiotic concentrations. METHODS We conducted a prospective randomized open-label study of adult neurocritically ill patients treated with vancomycin and cefepime. Vancomycin 15 mg/kg and cefepime 2 g were dosed at every-8- or 12-hour intervals. The primary outcomes were the achievement of pharmacodynamic (PD) targets related to time of unbound drug above minimum inhibitory concentrations (MIC) for 60% or more of the dosing interval (fT > MIC ≥ 60%) for β-lactams and ratio of 24-hour area under the curve (AUC):MIC of 400 or greater for vancomycin. RESULTS Twenty patients were included in the study. They were divided equally between the every-12-hour and every-8-hour dosing groups. Patients (mean age 51.8 ± 11 yrs) were primarily male (60%) and white (95%), and most had an admission diagnosis of intracranial hemorrhage (80%). Compared with the every-12-hour group, the every-8-hour vancomycin group achieved target trough concentrations (higher than 15 μg/ml) significantly more frequently at initial measurement (0% vs 80%, p<0.01) and at 7-10 days (0% vs 90%, p=0.045) and achieved PD targets more frequently at increasing MICs. Similarly, compared with every-12-hour dosing, the every-8-hour cefepime dosing strategy significantly increased PD target attainment (fT > MIC ≥ 60%) at an MIC of 8 μg/ml (20% vs 70%, p=0.02). CONCLUSIONS This study demonstrated that more frequent dosing of vancomycin and cefepime is required to achieve optimal PD targets in adult neurocritically ill patients. The need for increased total daily doses is potentially secondary to the development of augmented renal clearance.
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Affiliation(s)
- Lynn E Kassel
- Drake University College of Pharmacy and Health Sciences, Des Moines, Iowa
| | - Edward T Van Matre
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | | | - Douglas N Fish
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | - Scott W Mueller
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | | | - Michael F Wempe
- Department of Pharmaceutical Sciences, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado.,Medicinal Chemistry Core Facility, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | - Robert MacLaren
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
| | - Robert T Neumann
- Department of Neurosurgery, School of Medicine, University of Colorado, Aurora, Colorado
| | - Tyree H Kiser
- Department of Clinical Pharmacy, University of Colorado Skaggs School of Pharmacy and Pharmaceutical Sciences, Aurora, Colorado
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Jang SM, Gharibian KN, Lewis SJ, Fissell WH, Tolwani AJ, Mueller BA. A Monte Carlo Simulation Approach for Beta-Lactam Dosing in Critically Ill Patients Receiving Prolonged Intermittent Renal Replacement Therapy. J Clin Pharmacol 2018; 58:1254-1265. [PMID: 29746711 DOI: 10.1002/jcph.1137] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 03/23/2018] [Indexed: 11/05/2022]
Abstract
Cefepime, ceftazidime, and piperacillin/tazobactam are commonly used beta-lactam antibiotics in the critical care setting. For critically ill patients receiving prolonged intermittent renal replacement therapy (PIRRT), limited pharmacokinetic data are available to inform clinicians on the dosing of these agents. Monte Carlo simulations (MCS) can be used to guide drug dosing when pharmacokinetic trials are not feasible. For each antibiotic, MCS using previously published pharmacokinetic data derived from critically ill patients was used to evaluate multiple dosing regimens in 4 different prolonged intermittent renal replacement therapy effluent rates and prolonged intermittent renal replacement therapy duration combinations (4 L/h × 10 hours or 5 L/h × 8 hours in hemodialysis and hemofiltration modes). Antibiotic regimens were also modeled depending on whether drugs were administered during or well before prolonged intermittent renal replacement therapy therapy commenced. The probability of target attainment (PTA) was calculated using each antibiotic's pharmacodynamic target during the first 48 hours of therapy. Optimal doses were defined as the smallest daily dose achieving ≥90% probability of target attainment in all prolonged intermittent renal replacement therapy effluent and duration combinations. Cefepime 1 g every 6 hours following a 2 g loading dose, ceftazidime 2 g every 12 hours, and piperacillin/tazobactam 4.5 g every 6 hours attained the desired pharmacodynamic target in ≥90% of modeled prolonged intermittent renal replacement therapy patients. Alternatively, if an every 6-hours cefepime regimen is not desired, the cefepime 2 g pre-prolonged intermittent renal replacement therapy and 3 g post-prolonged intermittent renal replacement therapy regimen also met targets. For ceftazidime, 1 g every 6 hours or 3 g continuous infusion following a 2 g loading dose also met targets. These recommended doses provide simple regimens that are likely to achieve the pharmacodynamics target while yielding the least overall drug exposure, which should result in lower toxicity rates. These findings should be validated in the clinical setting.
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Affiliation(s)
- Soo Min Jang
- Department of Pharmacy Practice, Loma Linda School of Pharmacy, Loma Linda, CA, USA
| | - Katherine N Gharibian
- Department of Clinical Sciences, Medical College of Wisconsin School of Pharmacy, Milwaukee, WI, USA
| | - Susan J Lewis
- Department of Pharmacy Practice, University of Findlay College of Pharmacy, Findlay, OH, USA
| | - William H Fissell
- Nephrology and Hypertension Division, Vanderbilt University, School of Medicine and School of Engineering, Nashville, TN, USA
| | - Ashita J Tolwani
- Division of Nephrology, University of Alabama-Birmingham, School of Medicine, Birmingham, AL, USA
| | - Bruce A Mueller
- Department of Clinical Pharmacy, University of Michigan College of Pharmacy, Ann Arbor, MI, USA
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Chastain DB, White BP, Cretella DA, Bland CM. Is It Time to Rethink the Notion of Carbapenem-Sparing Therapy Against Extended-Spectrum β-Lactamase-Producing Enterobacteriaceae Bloodstream Infections? A Critical Review. Ann Pharmacother 2017; 52:484-492. [PMID: 29239220 DOI: 10.1177/1060028017748943] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE To present systematic recommendations for carbapenem-sparing therapy against extended-spectrum β-lactamases (ESBLs) Enterobacteriaceae bloodstream infections (BSIs) derived from a critical review of clinical data. DATA SOURCES A systematic literature search using PubMed and MEDLINE databases (January 1, 2012, to June 30, 2017) was performed using key MESH terms: ESBL or extended-spectrum β-lactamases and bacteremia or bloodstream infection with piperacillin/tazobactam, ciprofloxacin, levofloxacin, cefepime, cephamycins, carbapenem, doripenem, meropenem, and ertapenem. References within articles of interest were also evaluated. STUDY SELECTION AND DATA EXTRACTION All English language trials were considered, and results were limited to clinical efficacy trials. Articles were screened by title and abstract for inclusion. DATA SYNTHESIS Studies comparing noncarbapenem versus carbapenem therapy for ESBL BSIs were critically analyzed to identify heterogeneity among studies. Data abstracted included empirical or definitive therapy, patient population, dosing, source of infection and severity, infectious etiology, and outcome. CONCLUSIONS Completely sparing carbapenem therapy cannot be justified among patients with ESBL BSIs. Determining the source of infection is critical to identify patients for whom carbapenem-sparing therapy is appropriate.
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Affiliation(s)
| | - Bryan P White
- 2 Oklahoma University Medical Center, Oklahoma City, OK, USA
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18
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Andreatos N, Flokas ME, Apostolopoulou A, Alevizakos M, Mylonakis E. The Dose-Dependent Efficacy of Cefepime in the Empiric Management of Febrile Neutropenia: A Systematic Review and Meta-Analysis. Open Forum Infect Dis 2017; 4:ofx113. [PMID: 28761897 PMCID: PMC5534219 DOI: 10.1093/ofid/ofx113] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Despite reports questioning its efficacy, cefepime remains a first-line option in febrile neutropenia. We aimed to re-evaluate the role of cefepime in this setting. METHODS We searched the PubMed and EMBASE databases to identify randomized comparisons of (1) cefepime vs alternative monotherapy or (2) cefepime plus aminoglycoside vs alternative monotherapy plus aminoglycoside, published until November 28, 2016. RESULTS Thirty-two trials, reporting on 5724 patients, were included. Clinical efficacy was similar between study arms (P = .698), but overall mortality was greater among cefepime-treated patients (risk ratio [RR] = 1.321; 95% confidence interval [CI], 1.035-1.686; P = .025). Also of note, this effect seemed to stem from trials using low-dose (2 grams/12 hours, 100 mg/kg per day) cefepime monotherapy (RR = 1.682; 95% CI, 1.038-2.727; P = .035). Cefepime was also associated with increased mortality compared with carbapenems (RR = 1.668; 95% CI, 1.089-2.555; P = .019), a finding possibly influenced by cefepime dose, because carbapenems were compared with low-dose cefepime monotherapy in 5 of 9 trials. Treatment failure in clinically documented infections was also more frequent with cefepime (RR = 1.143; 95% CI, 1.004-1.300; P = .043). Toxicity-related treatment discontinuation was more common among patients that received high-dose cefepime (P = .026), whereas low-dose cefepime monotherapy resulted in fewer adverse events, compared with alternative monotherapy (P = .009). CONCLUSIONS Cefepime demonstrated increased mortality compared with carbapenems, reduced efficacy in clinically documented infections, and higher rates of toxicity-related treatment discontinuation. The impact of cefepime dosing on these outcomes is important, because low-dose regimens were associated with lower toxicity at the expense of higher mortality.
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Affiliation(s)
- Nikolaos Andreatos
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence
| | - Myrto Eleni Flokas
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence
| | - Anna Apostolopoulou
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence
| | - Michail Alevizakos
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence
| | - Eleftherios Mylonakis
- Infectious Diseases Division, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence
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Continuous and Prolonged Intravenous β-Lactam Dosing: Implications for the Clinical Laboratory. Clin Microbiol Rev 2017; 29:759-72. [PMID: 27413094 DOI: 10.1128/cmr.00022-16] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Beta-lactam antibiotics serve as a cornerstone in the management of bacterial infections because of their wide spectrum of activity and low toxicity. Since resistance rates among bacteria are continuously on the rise and the pipeline for new antibiotics does not meet this trend, an optimization of current beta-lactam treatment is needed. This review provides an overview of optimization through use of prolonged- and continuous-infusion dosing strategies compared with more traditional intermittent infusions. Included is an overview of the scientific basis for using these nontraditional prolonged- and continuous-infusion-based regimens, with a focus on major areas in which the clinical laboratory can support the clinical use of these regimens.
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20
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Antimicrobial Activity of High-Proportion Cefepime-Tazobactam (WCK 4282) against a Large Number of Gram-Negative Isolates Collected Worldwide in 2014. Antimicrob Agents Chemother 2017; 61:AAC.02409-16. [PMID: 28137811 DOI: 10.1128/aac.02409-16] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Accepted: 01/23/2017] [Indexed: 11/20/2022] Open
Abstract
Cefepime-tazobactam (WCK 4282) is currently under clinical development for use at a dosage of 2 g/2 g every 8 h. A total of 7,981 isolates were collected from 146 medical centers (39 countries) in 2014 as a part of the SENTRY Antimicrobial Surveillance Program, and their susceptibilities to cefepime-tazobactam (with tazobactam at fixed concentrations of 4 and 8 μg/ml) were tested by a reference broth microdilution method. Isolates were mainly from patients with pneumonia (29.5%) and bloodstream infections (26.9%). Cefepime-tazobactam (with tazobactam at a fixed concentration of 8 μg/ml) and cefepime inhibited 96.9 and 87.9% of Enterobacteriaceae strains at ≤8 μg/ml. The activity of cefepime-tazobactam against Enterobacteriaceae strains was comparable to that of meropenem (96.7% of isolates were susceptible) and greater than that of piperacillin-tazobactam (87.7% susceptible). All Enterobacteriaceae species from the United States except Klebsiella pneumoniae had >99.0% of isolates inhibited by cefepime-tazobactam at ≤8/8 μg/ml. The prevalence of the extended-spectrum β-lactamase (ESBL)-screening-positive phenotype was the highest among Escherichia coli isolates in China (66.3%) and among K. pneumoniae isolates (58.0%) in Latin America. Cefepime-tazobactam at ≤8/8 μg/ml inhibited 98.7 and 71.3% of ESBL-screening-positive phenotype E. coli strains and K. pneumoniae strains, respectively. Meropenem showed limited activity against ESBL-screening-positive phenotype K. pneumoniae strains (69.6% susceptible). Cefepime-tazobactam was active against Enterobacter spp. (MIC50 and MIC90, 0.06 and 0.5 μg/ml, respectively), including ceftazidime-nonsusceptible isolates (96.1% of isolates were inhibited by cefepime-tazobactam at ≤8/8 μg/ml). The activity of cefepime-tazobactam against Pseudomonas aeruginosa (82.4 and 91.6% of isolates were inhibited by cefepime-tazobactam at ≤8/8 and ≤16/8 μg/ml, respectively) was comparable to that of meropenem and piperacillin-tazobactam (79.2% susceptible). In summary, cefepime-tazobactam was highly active against P. aeruginosa and Enterobacteriaceae strains, including ESBL-screening-positive phenotype E. coli strains and ceftazidime-nonsusceptible Enterobacter spp. These results support the further clinical development of the cefepime-tazobactam combination.
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Huwyler T, Lenggenhager L, Abbas M, Ing Lorenzini K, Hughes S, Huttner B, Karmime A, Uçkay I, von Dach E, Lescuyer P, Harbarth S, Huttner A. Cefepime plasma concentrations and clinical toxicity: a retrospective cohort study. Clin Microbiol Infect 2017; 23:454-459. [PMID: 28111294 DOI: 10.1016/j.cmi.2017.01.005] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/05/2016] [Accepted: 01/06/2017] [Indexed: 10/20/2022]
Abstract
OBJECTIVES Cefepime remains an important antibiotic for severe bacterial infections, yet some meta-analyses have shown elevated mortality among patients randomized to it. Therapeutic drug monitoring (TDM) of β-lactam antibiotics is increasing, but optimal plasma concentrations remain unknown. We examined clinical outcomes of patients undergoing cefepime TDM in an initial effort to define the drug's toxicity threshold. METHODS In this single-centre retrospective cohort study, we enrolled all adult hospitalized patients receiving cefepime and undergoing TDM from January 2013 through July 2016. The primary outcome was the incidence of clinical toxicity; a secondary outcome was clinical failure. Plasma samples were analysed via high-performance liquid chromatography with ultraviolet detection. RESULTS A total of 161 cefepime concentrations were drawn from 93 patients. Roughly half (82/161, 51%) and one-third (49/161, 30%) were trough and steady-state levels from patients receiving intermittent and continuous infusions, respectively; median concentrations were 17.6 mg/L (IQR 9.7-35.2) and 29.2 mg/L (IQR 18.9-45.9). Ten patients (11%) experienced a neurologic event considered at least possibly related to cefepime; neurotoxicity was associated with poorer renal function (median creatinine clearance 54 (IQR 39-97) vs. 75 mL/min/1.732 (IQR 44-104)) and longer cefepime durations (mean 8.3 (SD±6.7) vs. 13.3 days (± 14.2), p = 0.071). Patients with trough levels >20 mg/L had a fivefold higher risk for neurologic events (OR 5.05, 95% CI 1.3-19.8). CONCLUSIONS Neurotoxicity potentially related to cefepime occurred at plasma concentrations >35 mg/L. For those receiving intermittent infusions, trough concentrations >20 mg/L should be avoided until further information is available from prospective studies.
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Affiliation(s)
- T Huwyler
- University of Geneva School of Medicine, Geneva, Switzerland
| | - L Lenggenhager
- University of Geneva School of Medicine, Geneva, Switzerland
| | - M Abbas
- Infection Control Programme, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - K Ing Lorenzini
- Division of Clinical Pharmacology and Toxicology, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - S Hughes
- Toxicology Laboratory, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - B Huttner
- Infection Control Programme, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland; Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - A Karmime
- Toxicology Laboratory, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - I Uçkay
- Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - E von Dach
- Infection Control Programme, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - P Lescuyer
- Toxicology Laboratory, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - S Harbarth
- Infection Control Programme, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland; Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
| | - A Huttner
- Infection Control Programme, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland; Division of Infectious Diseases, Geneva University Hospitals and Faculty of Medicine, Geneva, Switzerland
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22
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Meillier A, Rahimian D. Cefepime-induced encephalopathy with normal renal function. Oxf Med Case Reports 2016; 2016:118-20. [PMID: 27274853 PMCID: PMC4887827 DOI: 10.1093/omcr/omw042] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 04/26/2016] [Accepted: 05/03/2016] [Indexed: 11/22/2022] Open
Abstract
Cefepime is a fourth-generation cephalosporin that is frequently used in a wide array of infections. Since approval for use, concerns have been raised due to adverse effects including seizures, encephalopathy and myoclonus especially if renal dysfunction is present. Despite having appropriate renal dose adjustments, cases have been found with adverse neurological effects. On this occasion, we present a case of a patient with normal renal function that had demonstrated cefepime-induced encephalopathy with full resolution of symptoms following discontinuation of the medication.
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Affiliation(s)
- Andrew Meillier
- Department of Medicine , Temple University Hospital , Philadelphia, PA , USA
| | - David Rahimian
- Department of Medicine , Temple University Hospital , Philadelphia, PA , USA
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23
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Mohammed MA, Moles RJ, Chen TF. Meta-synthesis of qualitative research: the challenges and opportunities. Int J Clin Pharm 2016; 38:695-704. [PMID: 27052213 DOI: 10.1007/s11096-016-0289-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 03/14/2016] [Indexed: 01/08/2023]
Abstract
Synthesis of qualitative studies is an emerging area that has been gaining more interest as an important source of evidence for improving health care policy and practice. In the last decade there have been numerous attempts to develop methods of aggregating and synthesizing qualitative data. Although numerous empirical qualitative studies have been published about different aspects of health care research, to date, the aggregation and syntheses of these data has not been commonly reported, particularly in pharmacy practice related research. This paper describes different methods of conducting meta-synthesis and provides an overview of selected common methods. The paper also emphasizes the challenges and opportunities associated with conducting meta-synthesis and highlights the importance of meta-synthesis in informing practice, policy and research.
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Affiliation(s)
| | - Rebekah J Moles
- Faculty of Pharmacy, The University of Sydney, Sydney, Australia
| | - Timothy F Chen
- Faculty of Pharmacy, The University of Sydney, Sydney, Australia
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Adequacy of high-dose cefepime regimen in febrile neutropenic patients with hematological malignancies. Antimicrob Agents Chemother 2015; 59:5463-9. [PMID: 26124158 DOI: 10.1128/aac.00389-15] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2015] [Accepted: 06/11/2015] [Indexed: 01/21/2023] Open
Abstract
While guidelines recommend empirical cefepime therapy in febrile neutropenia, the mortality benefit of cefepime has been controversial. In light of this, recent reports on pharmacokinetic changes for several antibiotics in febrile neutropenia and the consequent suboptimal exposure call for a pharmacokinetic/pharmacodynamic evaluation of current dosing. This study aimed to assess pharmacokinetic/pharmacodynamic target attainment from a 2-g intravenous (i.v.) every 8 h (q8h) cefepime regimen in febrile neutropenic patients with hematological malignancies. Cefepime plasma concentrations were measured in the 3rd, 6th, and 9th dosing intervals at 60% of the interval and/or trough point. The selected pharmacokinetic/pharmacodynamic targets were the proportion of the dosing interval (60% and 100%) for which the free drug concentration remains above the MIC (fT>MIC). Target attainment was assessed in reference to the MIC of isolated organisms if available or empirical breakpoints if not. The percentage of fT>MIC was also estimated by log-linear regression analysis. All patients achieved >60% fT>MIC in the 3rd and 6th dosing intervals. A 100% fT>MIC was not attained in 6/12, 4/10, and 4/9 patients in the 3rd, 6th, and 9th dose intervals, respectively, or in 14/31 (45%) of the dosing intervals investigated. On the other hand, 29/31 (94%) of trough concentrations were at or above 4 mg/liter. In conclusion, for patients with normal renal function, a high-dose 2-g i.v. q8h cefepime regimen appears to provide appropriate exposure if the MIC of the organism is ≤4 mg/liter but may fail to cover less susceptible organisms.
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