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Blouin M, Métras MÉ, El Hassani M, Yaliniz A, Marsot A. Optimization of Vancomycin Initial Dosing Regimen in Neonates Using an Externally Evaluated Population Pharmacokinetic Model. Ther Drug Monit 2024:00007691-990000000-00235. [PMID: 38857472 DOI: 10.1097/ftd.0000000000001226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 03/27/2024] [Indexed: 06/12/2024]
Abstract
BACKGROUND Vancomycin therapeutic monitoring guidelines were revised in March 2020, and a population pharmacokinetics-guided Bayesian approach to estimate the 24-hour area under the concentration-time curve to the minimum inhibitory concentration ratio has since been recommended instead of trough concentrations. To comply with these latest guidelines, we evaluated published population pharmacokinetic models of vancomycin using an external dataset of neonatal patients and selected the most predictive model to develop a new initial dosing regimen. METHODS The models were identified from the literature and tested using a retrospective dataset of Canadian neonates. Their predictive performance was assessed using prediction- and simulation-based diagnostics. Monte Carlo simulations were performed to develop the initial dosing regimen with the highest probability of therapeutic target attainment. RESULTS A total of 144 vancomycin concentrations were derived from 63 neonates in the external population. Five of the 28 models retained for evaluation were found predictive with a bias of 15% and an imprecision of 30%. Overall, the Grimsley and Thomson model performed best, with a bias of -0.8% and an imprecision of 20.9%; therefore, it was applied in the simulations. A novel initial dosing regimen of 15 mg/kg, followed by 11 mg/kg every 8 hours should favor therapeutic target attainment. CONCLUSIONS A predictive population pharmacokinetic model of vancomycin was identified after an external evaluation and used to recommend a novel initial dosing regimen. The implementation of these model-based tools may guide physicians in selecting the most appropriate initial vancomycin dose, leading to improved clinical outcomes.
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Affiliation(s)
- Mathieu Blouin
- STP Laboratory, Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
- Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
| | - Marie-Élaine Métras
- Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
- Department of Pharmacy, Centre Hospitalier Universitaire Sainte-Justine, Montréal (QC), Canada; and
| | - Mehdi El Hassani
- STP Laboratory, Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
- Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
| | - Aysenur Yaliniz
- STP Laboratory, Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
- Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
| | - Amélie Marsot
- STP Laboratory, Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
- Faculty of Pharmacy, Université de Montréal, Montréal (QC), Canada
- Research Center, Centre Hospitalier Universitaire Sainte-Justine, Montréal (QC), Canada
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2
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Duceppe MA, Kanji S, Do AT, Ruo N, Cavayas YA, Albert M, Robert-Halabi M, Zavalkoff S, Benichou L, Samoukovic G, Williamson DR. Pharmacokinetics of Commonly Used Antimicrobials in Critically Ill Pediatric Patients During Extracorporeal Membrane Oxygenation: A Systematic Review. Paediatr Drugs 2023; 25:515-535. [PMID: 37450191 DOI: 10.1007/s40272-023-00582-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/27/2023] [Indexed: 07/18/2023]
Abstract
PURPOSE Adequate dosing of antimicrobials is critical to properly treat infections and limit development of resistance and adverse effects. Limited guidance exist for antimicrobial dosing adjustments in patients requiring extracorporeal membrane oxygenation (ECMO) therapy, particularly in the pediatric population. A systematic review was conducted to delineate the pharmacokinetics (PK) and pharmacodynamics (PD) of antimicrobials in critically ill neonates and children requiring ECMO therapy. METHODS Medline, EMBASE, Global Health and All EBM Reviews databases were queried. Grey literature was examined. All clinical studies reporting PK/PD parameters of antimicrobials in critically ill pediatric patients treated with ECMO were included, except for case reports and congress abstracts. Two independent reviewers applied the inclusion and exclusion criteria. Reviewers were then paired to independently extract data and evaluate the methodological quality of studies using the ROBINS-I tool and the compliance with ClinPK reporting guidelines. Patient and study characteristics, key PK/PD findings, details of ECMO circuits and co-treatments were summarized qualitatively. Broad dosing recommendations were formulated based on the available data for specific antimicrobials. RESULTS Twenty-nine clinical studies were included; most were observational and uncontrolled. Patient characteristics and co-treatments were often missing. The effect of ECMO on PK/PD parameters of antimicrobials varied depending on the drugs and population studied. It was only possible to formulate dosing recommendations for a few antimicrobials given the paucity of data, its overall low quality and heterogeneity in reporting. CONCLUSION Limited data exists on the PK/PD of antimicrobials during ECMO therapy in the pediatric population. Rigorously designed population PK studies are required to establish empiric dosing guidelines for antimicrobials in patients requiring this therapeutic modality. The use of therapeutic drug monitoring for antimicrobials in pediatric patients on ECMO should be encouraged to optimize dosing. TRIAL REGISTRY PROSPERO registration number: CRD42018099992 (Registered: July 24th 2018).
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Affiliation(s)
- Marc-Alexandre Duceppe
- Department of Pharmacy, McGill University Health Centre, 1001 Décarie, Local C-RC 6004, Montreal, QC, Canada, H4A 3J1.
| | - Salmaan Kanji
- Department of Pharmacy, The Ottawa Hospital, Ottawa, ON, Canada
- Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Faculté de Pharmacie, Université de Montréal, Montreal, QC, Canada
| | - Anh Thu Do
- Department of Pharmacy, McGill University Health Centre, 1001 Décarie, Local C-RC 6004, Montreal, QC, Canada, H4A 3J1
| | - Ni Ruo
- Department of Pharmacy, McGill University Health Centre, 1001 Décarie, Local C-RC 6004, Montreal, QC, Canada, H4A 3J1
| | - Yiorgos Alexandros Cavayas
- Department of Medicine, Division of Critical Care, Hôpital du Sacré-Coeur de Montréal Research Centre, Montreal, QC, Canada
- Department of Surgery, Division of Critical Care, Montreal Heart Institute, Montreal, QC, Canada
- Département de Médecine, Faculté de Médecine, Université de Montréal, Montreal, QC, Canada
| | - Martin Albert
- Department of Medicine, Division of Critical Care, Hôpital du Sacré-Coeur de Montréal Research Centre, Montreal, QC, Canada
- Department of Surgery, Division of Critical Care, Montreal Heart Institute, Montreal, QC, Canada
- Département de Médecine, Faculté de Médecine, Université de Montréal, Montreal, QC, Canada
| | - Maxime Robert-Halabi
- Department of Medicine, Division of Cardiology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
| | - Samara Zavalkoff
- Department of Pediatrics, Division of Pediatric Critical Care, McGill University Health Centre, Montreal, QC, Canada
- Faculty of Medicine, McGill University, Montreal, QC, Canada
| | - Laura Benichou
- Faculté de Pharmacie, Université Paris Descartes, Paris, France
| | - Gordan Samoukovic
- Faculty of Medicine, McGill University, Montreal, QC, Canada
- Department of Surgery, Division of Critical Care, McGill University Health Centre, Montreal, QC, Canada
| | - David R Williamson
- Faculté de Pharmacie, Université de Montréal, Montreal, QC, Canada
- Department of Pharmacy, Hôpital du Sacré-Coeur de Montréal, Montreal, QC, Canada
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Yalcin N, Sürmelioğlu N, Allegaert K. Population pharmacokinetics in critically ill neonates and infants undergoing extracorporeal membrane oxygenation: a literature review. BMJ Paediatr Open 2022; 6:10.1136/bmjpo-2022-001512. [PMID: 36437518 PMCID: PMC9639121 DOI: 10.1136/bmjpo-2022-001512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
Extracorporeal membrane oxygenation (ECMO) increases circulating blood volume, causes capillary leak and temporarily alters kidney function. Consequently, pharmacokinetics (PK) can be affected. When applied to neonates and infants, additional dose adjustments are a major concern, as the volume of distribution (Vd) is already generally greater for water-soluble drugs and the clearance (Cl) of drugs eliminated by glomerular filtration is reduced. A systematic search was performed on MEDLINE (1994-2022) using a combination of the following search terms: "pharmacokinetics", "extracorporeal membrane oxygenation" and "infant, newborn" using Medical Subject Headings search strategy. Nine out of 18 studies on 11 different drugs (vancomycin, meropenem, fluconazole, gentamicin, midazolam, phenobarbital, theophylline, clonidine, morphine, cefotaxime and cefepime) recommended dose increase/decrease by determining PK parameters. In other studies, it has been suggested to adjust the dose intervals. While the elimination half-life (t1/2) and Vd mostly increased for all drugs, the Cl of the drugs has been shown to have variability except for midazolam and morphine. There are a limited number of population PK studies in neonates and infants undergoing ECMO circuits. Despite some divergences, the general pattern suggests an increase in Vd and t1/2, an increased, stable or decreased Cl, and an increase in variability. Consequently, and if possible, therapeutic drug monitoring and target concentration intervention are strongly recommended to determine appropriate exposure and doses for neonates and infants undergoing ECMO support.
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Affiliation(s)
- Nadir Yalcin
- Department of Clinical Pharmacy, Faculty of Pharmacy, Hacettepe University, Ankara, Turkey
| | - Nursel Sürmelioğlu
- Department of Clinical Pharmacy, Faculty of Pharmacy, Çukurova University, Adana, Turkey
| | - Karel Allegaert
- Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium.,Department of Development and Regeneration, KU Leuven, Leuven, Belgium.,Child and Youth Institute, KU Leuven, Leuven, Belgium.,Deparment of Clinical Pharmacy, Erasmus MC, Rotterdam, the Netherlands
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4
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Yao BF, Wu YE, Tang BH, Hao GX, Jacqz-Aigrain E, van den Anker J, Zhao W. Predictive Performance of Pharmacokinetic Model-Based Virtual Trials of Vancomycin in Neonates: Mathematics Matches Clinical Observation. Clin Pharmacokinet 2022; 61:1027-1038. [PMID: 35513741 DOI: 10.1007/s40262-022-01128-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Vancomycin is frequently used to treat Gram-positive bacterial infections in neonates. However, there is still no consensus on the optimal initial dosing regimen. This study aimed to assess the performance of pharmacokinetic model-based virtual trials to predict the dose-exposure relationship of vancomycin in neonates. METHODS The PubMed database was searched for clinical trials of vancomycin in neonates that reported the percentage of target attainment. Monte Carlo simulations were performed using nonlinear mixed-effect modeling to predict the dose-exposure relationship, and the differences in outcomes between virtual trials and real-world data in clinical studies were calculated. RESULTS A total of 11 studies with 14 dosing groups were identified from the literature to evaluate dose-exposure relationships. For the ten dosing groups where the surrogate marker for exposure was the trough concentration, the mean ± standard deviation (SD) for the target attainment between original studies and virtual trials was 3.0 ± 7.3%. Deviations between - 10 and 10% accounted for 80% of the included dosing groups. For the other four dosing groups where the surrogate marker for exposure was concentration during continuous infusion, all deviations were between - 10 and 10%, and the mean ± SD value was 2.9 ± 4.5%. CONCLUSION The pharmacokinetic model-based virtual trials of vancomycin exhibited good predictive performance for dose-exposure relationships in neonates. These results might be used to assist the optimization of dosing regimens in neonatal practice, avoiding the need for trial and error.
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Affiliation(s)
- Bu-Fan Yao
- Department of Clinical Pharmacy, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, No.44, Wenhua West Road, Jinan, 250012, Shandong Province, China
| | - Yue-E Wu
- Department of Clinical Pharmacy, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, No.44, Wenhua West Road, Jinan, 250012, Shandong Province, China
| | - Bo-Hao Tang
- Department of Clinical Pharmacy, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, No.44, Wenhua West Road, Jinan, 250012, Shandong Province, China
| | - Guo-Xiang Hao
- Department of Clinical Pharmacy, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, No.44, Wenhua West Road, Jinan, 250012, Shandong Province, China
| | - Evelyne Jacqz-Aigrain
- Department of Pediatric Pharmacology and Pharmacogenetics, Hôpital Robert Debré, APHP, Paris, France
- Clinical Investigation Center CIC1426, INSERM, Paris, France
| | - John van den Anker
- Division of Clinical Pharmacology, Children's National Medical Center, Washington, DC, USA
- Departments of Pediatrics, Pharmacology and Physiology, Genomics and Precision Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC, USA
- Department of Paediatric Pharmacology and Pharmacometrics, University Children's Hospital Basel, University of Basel, Basel, Switzerland
| | - Wei Zhao
- Department of Clinical Pharmacy, Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, No.44, Wenhua West Road, Jinan, 250012, Shandong Province, China.
- NMPA Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Shandong University, Jinan, China.
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Xu J, Zhu Y, Niu P, Liu Y, Li D, Jiang L, Shi D. Establishment and application of population pharmacokinetics model of vancomycin in infants with meningitis. Pediatr Neonatol 2022; 63:57-65. [PMID: 34544677 DOI: 10.1016/j.pedneo.2021.06.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 06/09/2021] [Accepted: 06/11/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND To establish a population pharmacokinetics (PPK) model of vancomycin (VCM) for dose individualization in Chinese infants with meningitis. METHODS We collected the data of 82 children with meningitis in hospital from July 2014 to June 2016. The initial vancomycin dosage regimen for children was 10 or 15 mg/kg for q12 h, q8 h or q6 h. Serum concentrations were determined by Viva-E Analyzer before and after the fifth administration. The PPK model was developed by nonlinear mixed-effect model software, assessed by the bootstrap method and then tested in 20 infant patients. RESULTS The VCM clearance (CL) was increased by body weight (WT) and decreased by blood urea nitrogen (BUN). Pharmacokinetic parameters of VCM were not influenced by co-administered drugs. The trough concentrations of VCM were accurately predicted by the PPK model, with the prediction errors less than 32%. CONCLUSION A new individual strategy for VCM regimens was proposed and validated by the PPK model.
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Affiliation(s)
- Jianwen Xu
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China; Department of Pharmacy, Affiliated First Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Yanting Zhu
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Peiguang Niu
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Ying Liu
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Danyun Li
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Li Jiang
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China
| | - Daohua Shi
- Department of Pharmacy, Fujian Maternity and Child Health Hospital, Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, 350001, China.
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6
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Aljutayli A, El-Haffaf I, Marsot A, Nekka F. An Update on Population Pharmacokinetic Analyses of Vancomycin, Part II: In Pediatric Patients. Clin Pharmacokinet 2021; 61:47-70. [PMID: 34671937 DOI: 10.1007/s40262-021-01050-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/09/2021] [Indexed: 10/20/2022]
Abstract
Vancomycin is widely used in pediatric patients, however, large inter- and intraindividual variability are observed in vancomycin pharmacokinetics, affecting proper therapeutic monitoring. This review aimed at providing a comprehensive synthesis of the population pharmacokinetic models of vancomycin in pediatric patients and identifying potential factors responsible for the variability observed in various subpopulations. We conducted a literature search of the PubMed and EMBASE databases to obtain population pharmacokinetic studies for vancomycin published between January 2011 and January 2020, which resulted in a total of 33 studies. Vancomycin pharmacokinetics were generally characterized using a one-compartment model (n = 27), while a two-compartment model was used in six studies. The median (interquartile range) of the typical vancomycin clearance (CL) and the total volume of distribution adjusted to the median or mean body weight of the respective study was 0.103 L/h/kg (0.071-0.125) and 0.64 L/kg (0.59-1.03), respectively. Median weight-adjusted CL between different child age groups, such as infants and adolescents, did not appear to vary significantly, although the sample size for many age groups was very small. Examples of the conditions with relatively abnormal vancomycin pharmacokinetic values include renal insufficiency, sepsis, hematological and solid malignancy, and hypothermia treatment. Factors influencing pediatric vancomycin pharmacokinetics after adjusting for size and maturation include various renal function descriptors and some case-specific variables such as dialysate flow rate, ultrafiltrate output, and hypothermia. This review was able to document possible variables explaining the high variability observed in certain subpopulations and contrast vancomycin pharmacokinetics in different pediatric subpopulations.
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Affiliation(s)
- Abdullah Aljutayli
- Faculty of Pharmacy, Université de Montréal, 2940 chemin de polytechnique, Montreal, H3T 1J4, Canada.,Laboratoire de Pharmacométrie, Faculté de Pharmacie, Université de Montréal, 2940 chemin de polytechnique, Montreal, QC, H3T 1J4, Canada
| | - Ibrahim El-Haffaf
- Faculty of Pharmacy, Université de Montréal, 2940 chemin de polytechnique, Montreal, H3T 1J4, Canada.,Laboratoire de suivi thérapeutique pharmacologique et pharmacocinétique, Faculté de Pharmacie, Université de Montréal, 2940 chemin de polytechnique, Montreal, QC, H3T 1J4, Canada
| | - Amélie Marsot
- Faculty of Pharmacy, Université de Montréal, 2940 chemin de polytechnique, Montreal, H3T 1J4, Canada. .,Laboratoire de suivi thérapeutique pharmacologique et pharmacocinétique, Faculté de Pharmacie, Université de Montréal, 2940 chemin de polytechnique, Montreal, QC, H3T 1J4, Canada. .,Centre de recherche, CHU Sainte-Justine, 175 Chemin de la Côte-Sainte-Catherine, Montreal, QC, H3T 1C5, Canada.
| | - Fahima Nekka
- Faculty of Pharmacy, Université de Montréal, 2940 chemin de polytechnique, Montreal, H3T 1J4, Canada.,Laboratoire de Pharmacométrie, Faculté de Pharmacie, Université de Montréal, 2940 chemin de polytechnique, Montreal, QC, H3T 1J4, Canada.,Centre de recherches mathématiques, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montreal, QC, Canada, H3T 1J4
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7
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Pharmacokinetics of Antibiotics in Pediatric Intensive Care: Fostering Variability to Attain Precision Medicine. Antibiotics (Basel) 2021; 10:antibiotics10101182. [PMID: 34680763 PMCID: PMC8532953 DOI: 10.3390/antibiotics10101182] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/22/2021] [Accepted: 09/24/2021] [Indexed: 12/16/2022] Open
Abstract
Children show important developmental and maturational changes, which may contribute greatly to pharmacokinetic (PK) variability observed in pediatric patients. These PK alterations are further enhanced by disease-related, non-maturational factors. Specific to the intensive care setting, such factors include critical illness, inflammatory status, augmented renal clearance (ARC), as well as therapeutic interventions (e.g., extracorporeal organ support systems or whole-body hypothermia [WBH]). This narrative review illustrates the relevance of both maturational and non-maturational changes in absorption, distribution, metabolism, and excretion (ADME) applied to antibiotics. It hereby provides a focused assessment of the available literature on the impact of critical illness—in general, and in specific subpopulations (ARC, extracorporeal organ support systems, WBH)—on PK and potential underexposure in children and neonates. Overall, literature discussing antibiotic PK alterations in pediatric intensive care is scarce. Most studies describe antibiotics commonly monitored in clinical practice such as vancomycin and aminoglycosides. Because of the large PK variability, therapeutic drug monitoring, further extended to other antibiotics, and integration of model-informed precision dosing in clinical practice are suggested to optimise antibiotic dose and exposure in each newborn, infant, or child during intensive care.
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8
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Population Pharmacokinetic Models of Vancomycin in Paediatric Patients: A Systematic Review. Clin Pharmacokinet 2021; 60:985-1001. [PMID: 34002357 DOI: 10.1007/s40262-021-01027-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Vancomycin is commonly used to treat gram-positive bacterial infections in the paediatric population, but dosing can be challenging. Population pharmacokinetic (popPK) modelling can improve individualization of dosing regimens. The primary objective of this study was to describe popPK models of vancomycin and factors that influence pharmacokinetic (PK) variability in paediatric patients. METHODS Systematic searches were conducted in the Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, International Pharmaceutical Abstracts and the grey literature without language or publication status restrictions from inception to 17 August 2020. Observational studies that described the development of popPK models of vancomycin in paediatric patients (< 18 years of age) were included. Risk of bias was assessed using the National Heart, Lung and Blood Institute Study Quality Assessment Tool for Case Series Studies. RESULTS Sixty-four observational studies (1 randomized controlled trial, 13 prospective studies and 50 retrospective studies of 9019 patients with at least 25,769 serum vancomycin concentrations) were included. The mean age was 2.5 years (range 1 day-18 years), serum creatinine was 47.1 ± 33.6 µmol/L, and estimated creatinine clearance was 97.4 ± 76 mL/min/1.73m2. Most studies found that vancomycin PK was best described by a one-compartment model (71.9%). There was a wide range of clearance and volume of distribution (Vd) values (range 0.014-0.27 L/kg/h and 0.43-1.46 L/kg, respectively) with interindividual variability as high as 49.7% for clearance and 136% for Vd, proportional residual variability up to 37.5% and additive residual variability up to 17.5 mg/L. The most significant covariates for clearance were weight, age, and serum creatinine or creatinine clearance, and weight for Vd. Variable dosing recommendations were suggested. CONCLUSION Numerous popPK models of vancomycin were derived, however external validation of suggested dosing regimens and analyses in subgroup paediatric populations such as dialysis patients are still needed before a popPK model with best predictive performance can be applied for dosing recommendations. Significant intraindividual and interindividual PK variability was present, which demonstrated the need for ongoing therapeutic drug monitoring and derivation of PK models for vancomycin for certain subgroup populations, such as dialysis patients.
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Rybak MJ, Le J, Lodise TP, Levine DP, Bradley JS, Liu C, Mueller BA, Pai MP, Wong-Beringer A, Rotschafer JC, Rodvold KA, Maples HD, Lomaestro BM. Therapeutic monitoring of vancomycin for serious methicillin-resistant Staphylococcus aureus infections: A revised consensus guideline and review by the American Society of Health-System Pharmacists, the Infectious Diseases Society of America, the Pediatric Infectious Diseases Society, and the Society of Infectious Diseases Pharmacists. Am J Health Syst Pharm 2021; 77:835-864. [PMID: 32191793 DOI: 10.1093/ajhp/zxaa036] [Citation(s) in RCA: 594] [Impact Index Per Article: 198.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Affiliation(s)
- Michael J Rybak
- Anti-Infective Research Laboratory, Department of Pharmacy Practice, Eugene Applebaum College of Pharmacy & Health Sciences, Wayne State University, Detroit, MI, School of Medicine, Wayne State University, Detroit, MI, and Detroit Receiving Hospital, Detroit, MI
| | - Jennifer Le
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA
| | - Thomas P Lodise
- Albany College of Pharmacy and Health Sciences, Albany, NY, and Stratton VA Medical Center, Albany, NY
| | - Donald P Levine
- School of Medicine, Wayne State University, Detroit, MI, and Detroit Receiving Hospital, Detroit, MI
| | - John S Bradley
- Department of Pediatrics, Division of Infectious Diseases, University of California at San Diego, La Jolla, CA, and Rady Children's Hospital San Diego, San Diego, CA
| | - Catherine Liu
- Division of Allergy and Infectious Diseases, University of Washington, Seattle, WA, and Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA
| | | | | | | | | | | | - Holly D Maples
- University of Arkansas for Medical Sciences College of Pharmacy & Arkansas Children's Hospital, Little Rock, AR
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10
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Ferrari F, Benegni S, Marinari E, Haiberger R, Garisto C, Rizza A, Giorni C, Quattrone MG, Arpicco S, Muntoni E, Milla P, Ricci Z. Vancomycin concentrations during cardiopulmonary bypass in pediatric cardiac surgery: a prospective study. Perfusion 2021; 37:553-561. [PMID: 33789546 DOI: 10.1177/02676591211006828] [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: 11/15/2022]
Abstract
INTRODUCTION Few data are available regarding intraoperative plasma concentrations of vancomycin administered as prophylaxis in pediatric cardiac surgery. The aims of this study were to investigate during pediatric cardiac surgery with cardiopulmonary bypass(CPB) the attainment of the area-under-the-curve of the vancomycin serum concentrations versus time over surgery to minimum inhibitory concentration ratio(AUCintra/MIC) of 400 (mg × h)/l and/or a target concentration of 15-20 mg/l. METHODS In a prospective study, 40 patients divided into four subgroups (neonates, infants, children <10 years-old, ⩾10 years-old) undergoing cardiac surgery with cardiopulmonary bypass (CPB) were enrolled. A slow vancomycin bolus of 20 mg/kg, up to a maximum dose of 1000 mg was administered before skin incision and a further dose of 10 mg/kg (up to 500 mg) at CPB start. Vancomycin samples were collected intraoperatively at four time points. RESULTS The median (interquartile range) age was 241.5 days (47-3898) and the median weight was 7.1 kg (3.1-37). The median AUCintra/MIC was 254.73 (165.89-508.06). In 11 patients the AUCintra/MIC target was not reached. Neonates displayed the lowest AUCintra/MIC values, and these were significantly lower than those of children ⩾10 years old (p = 0.02). Vancomycin concentrations were above the maximal target of 20 mg/l in 82.5% and 80% of patients at surgery and CPB start, respectively. At CPB and surgery end, 42.5% of patients showed vancomycin concentrations above 20 mg/l and 42.5% below 15 mg/l. Patients⩾10 years old showed the highest peak values whereas neonates were those with the lowest troughs. AUCintra/MIC correlated with age(r:0.36, p = 0.02), weight(r:0.35, p = 0.03), intraoperative protein value(r:0.40, p = 0.01), CPB priming volume/kg(r:-0.33, p = 0.04), CPB duration(r:0.36, p = 0.02) and vancomycin troughs(r:0.35, p = 0.04). CONCLUSIONS An AUCintra/MIC ⩾400 target was not reached in one-quarter of children undergoing heart surgery. Vancomycin peaked before the start of surgery and neonates were those with the lowest troughs. Vancomycin concentrations are affected by CPB hemodilution and by patients' age and weight.
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Affiliation(s)
- Fiorenza Ferrari
- Intensive Care Unit, I.R.C.C.S. Fondazione Policlinico San Matteo, Pavia, Italy
| | - Simona Benegni
- Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Eleonora Marinari
- Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Roberta Haiberger
- Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Cristiana Garisto
- Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alessandra Rizza
- Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Chiara Giorni
- Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Silvia Arpicco
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Elisabetta Muntoni
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Paola Milla
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Zaccaria Ricci
- Azienda Ospedaliero Universitaria Meyer, Firenze, Italy.,Università di Firenze, Firenze, Italy
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11
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Mulubwa M, Griesel HA, Mugabo P, Dippenaar R, van Wyk L. Assessment of Vancomycin Pharmacokinetics and Dose Regimen Optimisation in Preterm Neonates. Drugs R D 2020; 20:105-113. [PMID: 32266599 PMCID: PMC7221111 DOI: 10.1007/s40268-020-00302-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND The pharmacokinetics of vancomycin, a drug used for the treatment of methicillin-resistant Staphylococcus aureus (MRSA), varies between paediatric and adult patients. OBJECTIVE The objective of this study was to assess the pharmacokinetics of vancomycin in preterm neonates and determine the optimum dose regimen. METHODS This was a randomised double-blind study of preterm neonates admitted to neonatal intensive care units. They all received vancomycin 15 mg/kg every 12 h. Blood was sampled just before administration of the third, sixth and ninth vancomycin dose. Pharmacokinetic parameters were estimated using a Bayesian approach implemented in Monolix 2018R2 software. Covariates assessed included postmenstrual age, current weight, creatinine clearance, albumin, gestational age, body surface area and current age. We used Monte Carlo simulations for dose regimen optimisation targeting area under the concentration-time curve up to 24 h (AUC0-24h) of ≥ 400 mg × h/L. RESULTS In total, 19 preterm neonates were enrolled in the study with a median age of 14 (3-58) days. A one-compartment model with linear elimination best described the pharmacokinetics of vancomycin. Volume of distribution and clearance was 0.88 L and 0.1 L/h, respectively, for a typical neonate weighing 1.48 kg. Simulation of the current dose regimen showed that 27.5% of the neonates would achieve the target AUC0-24h of ≥ 400 mg × h/L, and 70.7% of the neonates would achieve it with 12 mg/kg every 8 h. CONCLUSION The majority of the neonates were under dosed. Vancomycin 12 mg/kg should be administered every 8 h over 1 h infusion to improve the likelihood of achieving the AUC0-24h target of ≥ 400 mg × h/L. This target is considered optimal for MRSA infections, where the vancomycin minimum inhibitory concentration is ≤ 1 µg/mL.
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Affiliation(s)
- Mwila Mulubwa
- School of Pharmacy, University of the Western Cape, Private Bag X17, Bellville, Cape Town, 7535, South Africa.
| | - Heletje Aletta Griesel
- School of Pharmacy, University of the Western Cape, Private Bag X17, Bellville, Cape Town, 7535, South Africa
| | - Pierre Mugabo
- School of Pharmacy, University of the Western Cape, Private Bag X17, Bellville, Cape Town, 7535, South Africa
| | - Ricky Dippenaar
- Neonatology Department, Netcare Blaauwberg Hospital, Sunningdale, Cape Town, 7441, South Africa
| | - Lizelle van Wyk
- Division of Neonatology, Department of Paediatrics and Child Health, Tygerberg Hospital, Stellenbosch University, Cape Town, 7505, South Africa
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12
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Pokorná P, Šíma M, Tibboel D, Slanař O. Impact of haemolysis on vancomycin disposition in a full-term neonate treated with extracorporeal membrane oxygenation. Perfusion 2020; 36:864-867. [PMID: 33200670 DOI: 10.1177/0267659120973595] [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: 11/17/2022]
Abstract
INTRODUCTION Extracorporeal membrane oxygenation (ECMO) is a lifesaving support technology for potentially reversible neonatal cardiac and/or respiratory failure. Pharmacological consequences of ECMO-induced haemolysis in neonates are not well understood. CASE REPORT We report a case report of a full-term neonate treated for congenital diaphragmatic hernia and sepsis with ECMO and with vancomycin. While the population elimination half-life of 7 h was estimated, fitting of the simulated population pharmacokinetic profile to truly observed drug concentration points resulted in the personalized value of 41 h. DISCUSSION The neonate developed ECMO-induced haemolysis with subsequent acute kidney injury resulting in prolonged drug elimination. Whole blood/serum ratio of 0.79 excluded possibility of direct increase of vancomycin serum concentration during haemolysis. CONCLUSION Vancomycin elimination may be severely prolonged due to ECMO-induced haemolysis and acute kidney injury, while hypothesis of direct increase of vancomycin levels by releasing the drug from blood cells during haemolysis has been disproved.
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Affiliation(s)
- Pavla Pokorná
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.,Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.,Intensive Care and Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Martin Šíma
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Dick Tibboel
- Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.,Intensive Care and Department of Paediatric Surgery, Erasmus MC - Sophia Children's Hospital, Rotterdam, The Netherlands
| | - Ondřej Slanař
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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13
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Cies JJ, Moore WS, Giliam N, Low T, Marino D, Deacon J, Enache A, Chopra A. Oxygenator impact on voriconazole in extracorporeal membrane oxygenation circuits. Perfusion 2020; 35:529-533. [PMID: 32627659 DOI: 10.1177/0267659120937906] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
INTRODUCTION To determine the oxygenator impact on alterations of voriconazole in a contemporary neonatal/pediatric (1/4 inch) and adolescent/adult (3/8 inch) extracorporeal membrane oxygenation circuit including the Quadrox-i® oxygenator. METHODS Simulated closed-loop extracorporeal membrane oxygenation circuits (1/4 and 3/8 inch) were prepared with a Quadrox-i pediatric and Quadrox-i adult oxygenator and blood primed. In addition, 1/4- and 3/8-inch circuits were also prepared without an oxygenator in series. A one-time dose of voriconazole was administered into the circuits, and serial pre- and post-oxygenator concentrations were obtained at 5 minutes, 1, 2, 3, 4, 5, 6, and 24 hour time points. Voriconazole was also maintained in a glass vial and samples were taken from the vial at the same time periods for control purposes to assess for spontaneous drug degradation. RESULTS For the 1/4-inch circuit, there was an approximate mean of 64-67% voriconazole loss with the oxygenator in series and mean of 15-20% voriconazole loss without an oxygenator in series at 24 hours. For the 3/8-inch circuit, there was an approximate mean of 44-51% voriconazole loss with the oxygenator in series and a mean of 8-12% voriconazole loss without an oxygenator in series at 24 hours. The reference voriconazole concentrations remained relatively constant during the entire study period demonstrating that the drug loss in each size of the extracorporeal membrane oxygenation circuit with or without an oxygenator was not a result of spontaneous drug degradation. CONCLUSION This ex vivo investigation demonstrated substantial voriconazole loss within an extracorporeal membrane oxygenation circuit with an oxygenator in series with both sizes of the Quadrox-i oxygenator at 24 hours and no significant voriconazole loss in the absence of an oxygenator. Further evaluations with multiple dose in vitro and in vivo investigations are needed before specific voriconazole dosing recommendations can be made for clinical application with extracorporeal membrane oxygenation.
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Affiliation(s)
- Jeffrey J Cies
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, PA, USA.,Drexel University College of Medicine, Philadelphia, PA, USA
| | - Wayne S Moore
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, PA, USA
| | - Nadji Giliam
- St. Christopher's Hospital for Children, Philadelphia, PA, USA
| | - Tracy Low
- St. Christopher's Hospital for Children, Philadelphia, PA, USA
| | - Daniel Marino
- St. Christopher's Hospital for Children, Philadelphia, PA, USA
| | - Jillian Deacon
- St. Christopher's Hospital for Children, Philadelphia, PA, USA
| | - Adela Enache
- Atlantic Diagnostic Laboratories, Bensalem, PA, USA
| | - Arun Chopra
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, PA, USA.,NYU Langone Medical Center, New York, NY, USA.,NYU School of Medicine, New York, NY, USA
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14
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Ricci Z, Benegni S, Cies JJ, Marinari E, Haiberger R, Garisto C, Rizza A, Giorni C, Di Chiara L, Arpicco S, Muntoni E, Ferrari F, Milla P. Population Pharmacokinetics of Cefoxitin Administered for Pediatric Cardiac Surgery Prophylaxis. Pediatr Infect Dis J 2020; 39:609-614. [PMID: 32221166 DOI: 10.1097/inf.0000000000002635] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND Available data about pharmacokinetics (PK) of antimicrobials administered as surgical prophylaxis to children undergoing cardiac surgery with cardiopulmonary bypass (CPB) showed that drug concentrations during CPB may be supra or subtherapeutic. The aim of this study was to determine the population PK and pharmacodynamic target attainment (PTA) of cefoxitin during pediatric CPB surgery. METHODS A prospective interventional study was conducted. Cefoxitin (40 mg/kg, up to max 1000 mg) was administered before skin incision. Blood samples were obtained in the operatory room throughout surgery. Population PK, PTA, and safety of cefoxitin were evaluated in neonates, infants, children <10 and >10 years old. RESULTS Forty patients were enrolled. Cefoxitin levels correlated with time from bolus administration (r = -0.6, P = 0.0001) and, after 240 minutes from bolus, drug values below the target (8 mg/L) were shown. Cefoxitin concentrations were best described by a one-compartment model with first order elimination. A significant relationship was identified between body weight, age, body mass index, and serum creatinine on drug clearance and age, body weight, and body mass index on cefoxitin volume of distribution. The PTA for free drug concentration being above the minimum inhibitory concentration of 8 mg/L for at least 240 minutes was >90% in all age groups except in patients >10 years of age (PTA = 62%). CONCLUSIONS Cefoxitin PK appears to be significantly influenced by CPB with generally reduced drug clearance. The PTA was adequately achieved in the majority of patients except in patients >10 years old or longer surgeries.
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Affiliation(s)
- Zaccaria Ricci
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Simona Benegni
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Eleonora Marinari
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Roberta Haiberger
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Cristiana Garisto
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Alessandra Rizza
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Chiara Giorni
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Luca Di Chiara
- From the Department of Cardiology and Cardiac Surgery, Pediatric Cardiac Intensive Care Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Silvia Arpicco
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Elisabetta Muntoni
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Fiorenza Ferrari
- Department of Anesthesiology and Intensive Care, Intensive Care Unit, I.R.C.C.S. Policlinico San Matteo, Viale Golgi, Pavia, Italy
| | - Paola Milla
- Department of Drug Science and Technology, University of Turin, Turin, Italy
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15
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Sutiman N, Koh JC, Watt K, Hornik C, Murphy B, Chan YH, Lee JH. Pharmacokinetics Alterations in Critically Ill Pediatric Patients on Extracorporeal Membrane Oxygenation: A Systematic Review. Front Pediatr 2020; 8:260. [PMID: 32670992 PMCID: PMC7332755 DOI: 10.3389/fped.2020.00260] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Accepted: 04/27/2020] [Indexed: 12/13/2022] Open
Abstract
Objectives: This study aimed to identify alterations in pharmacokinetics in children on extracorporeal membrane oxygenation (ECMO), identify knowledge gaps, and inform future pharmacology studies. Data Sources: We systematically searched the databases MEDLINE, CINAHL, and Embase from earliest publication until November 2018 using a controlled vocabulary and keywords related to "ECMO" and "pharmacokinetics," "pharmacology," "drug disposition," "dosing," and "pediatrics." Study Selection: Inclusion criteria were as follows: study population aged <18 years, supported on ECMO for any indications, received any medications while on ECMO, and reported pharmacokinetic data. Data Extraction: Clearance and/or volume of distribution values were extracted from included studies. Data Synthesis: Forty-one studies (total patients = 574) evaluating 23 drugs met the inclusion criteria. The most common drugs studied were antimicrobials (n = 13) and anticonvulsants (n = 3). Twenty-eight studies (68%) were conducted in children <1 year of age. Thirty-three studies (80%) were conducted without intra-study comparisons to non-ECMO controls. Increase in volume of distribution attributable to ECMO was demonstrated for nine (56%) drugs: cefotaxime, gentamicin, piperacillin/tazobactam, fluconazole, micafungin, levetiracetam, clonidine, midazolam, and sildenafil (range: 23-345% increase relative to non-ECMO controls), which may suggest the need for higher initial dosing. Decreased volume of distribution was reported for two drugs: acyclovir and ribavirin (50 and 69%, respectively). Decreased clearance was reported for gentamicin, ticarcillin/clavulanate, bumetanide, and ranitidine (range: 26-95% decrease relative to non-ECMO controls). Increased clearance was reported for caspofungin, micafungin, clonidine, midazolam, morphine, and sildenafil (range: 25-455% increase relative to non-ECMO controls). Conclusions: There were substantial pharmacokinetic alterations in 70% of drugs studied in children on ECMO. However, studies evaluating pharmacokinetic changes of many drug classes and those that allow direct comparisons between ECMO and non-ECMO patients are still lacking. Systematic evaluations of pharmacokinetic alterations of drugs on ECMO that incorporate multidrug opportunistic trials, physiologically based pharmacokinetic modeling, and other methods are necessary for definitive dose recommendations. Trial Registration Prospero Identifier: CRD42019114881.
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Affiliation(s)
| | - Janine Cynthia Koh
- Children's Intensive Care Unit, Department of Pediatrics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Kevin Watt
- Department of Pediatrics, Duke University Medical Center, Durham, NC, United States
- Duke Clinical Research Institute, Durham, NC, United States
| | - Christoph Hornik
- Department of Pediatrics, Duke University Medical Center, Durham, NC, United States
- Duke Clinical Research Institute, Durham, NC, United States
| | - Beverly Murphy
- Duke University Medical Center Library and Archives, Durham, NC, United States
| | - Yoke Hwee Chan
- Duke-NUS Medical School, Singapore, Singapore
- Children's Intensive Care Unit, Department of Pediatrics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Jan Hau Lee
- Duke-NUS Medical School, Singapore, Singapore
- Children's Intensive Care Unit, Department of Pediatrics, KK Women's and Children's Hospital, Singapore, Singapore
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16
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Raffaeli G, Cavallaro G, Allegaert K, Koch BCP, Mosca F, Tibboel D, Wildschut ED. Sequestration of Voriconazole and Vancomycin Into Contemporary Extracorporeal Membrane Oxygenation Circuits: An in vitro Study. Front Pediatr 2020; 8:468. [PMID: 32974242 PMCID: PMC7481439 DOI: 10.3389/fped.2020.00468] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/03/2020] [Indexed: 12/29/2022] Open
Abstract
Background: Bacterial and fungal infections are common and often contribute to death in patients undergoing extracorporeal membrane oxygenation (ECMO). Drug disposition is altered during ECMO, and adsorption in the circuit is an established causative factor. Vancomycin and voriconazole are widely used, despite the lack of evidence-based prescription guidelines. Objective: The objective of this study was to determine the extraction of voriconazole and vancomycin by the Xenios/Novalung ECMO circuits. Methods: We have set up nine closed-loop ECMO circuits, consisting of four different iLAActivve ® kits for neonatal, pediatric, and adult support: three iLA-ActivveMiniLung ® petite kits, two iLA-ActivveMiniLung ® kits, two iLA-ActivveiLA ® kits, and two iLA-Activve X-lung ® kits. The circuits were primed with whole blood and maintained at physiologic conditions for 24 h. Voriconazole and vancomycin were injected as a single-bolus age-related dose into the circuits. Pre-membrane (P2) blood samples were obtained at baseline and after drug injection at 2, 10, 30, 180, 360 min, and 24 h. A control sample at 2 min was collected for spontaneous drug degradation testing at 24 h. Results: Seventy-two samples were analyzed in triplicate. The mean percentage of drug recovery at 24 h was 20% for voriconazole and 62% for vancomycin. Conclusions: The extraction of voriconazole and vancomycin by contemporary ECMO circuits is clinically relevant across all age-related circuit sizes and may result in reduced drug exposure in vivo.
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Affiliation(s)
- Genny Raffaeli
- Intensive Care and Department of Pediatric Surgery Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Giacomo Cavallaro
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Karel Allegaert
- Department of Development and Regeneration and Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, Leuven, Belgium.,Hospital Pharmacy, Erasmus MC, Rotterdam, Netherlands
| | | | - Fabio Mosca
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Dick Tibboel
- Intensive Care and Department of Pediatric Surgery Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Enno D Wildschut
- Intensive Care and Department of Pediatric Surgery Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
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17
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Cies JJ, Moore WS, Enache A, Chopra A. Peramivir for Influenza A and B Viral Infections: A Pharmacokinetic Case Series. Pharmacotherapy 2019; 39:1060-1065. [PMID: 31514223 PMCID: PMC7167779 DOI: 10.1002/phar.2330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Objective To describe the peramivir (PRV) pharmacokinetics in critically ill children treated for influenza A or B viral infections. Design Retrospective electronic medical record review of prospectively collected data from critically ill children receiving peramivir for influenza A or B viral infections in the pediatric intensive care unit (PICU). Setting A 189‐bed, freestanding children's tertiary care teaching hospital in Philadelphia, PA. Patients Critically ill children admitted to the PICU who were infected with influenza between January 1, 2016 and March 31, 2018. Interventions None. Results Eleven patients, two females (18%) and nine males (82%), accounted for 24 peramivir samples for therapeutic drug management. The median age was 5 years (interquartile range 1.5–6.5 yrs) with a median weight of 16.4 kg (interquartile range 14–24 kg). Ten (91%) patients demonstrated a larger volume of distribution, 11 (100%) patients demonstrated an increase in clearance, and 11 (100%) patients demonstrated a shorter half‐life estimate as compared with the package insert and previous pediatric trial data for peramivir. Eight (73%) patients tested positive for a strain of influenza A and 3 (27%) patients tested positive for influenza B; 4 of 11 (36%) patients tested positive for multiple viruses. All patients had adjustments made to their dosing interval to a more frequent interval. Ten (91%) patients were adjusted to an every‐12‐hour regimen and 1 (9%) patient was adjusted to an every‐8‐hour regimen. No adverse events were associated with peramivir treatment. Conclusion The pharmacokinetics of PRV demonstrated in this PICU cohort differs in comparison to healthy pediatric and adult patients, and alterations to dosing regimens may be needed in PICU patients to achieve pharmacodynamic exposures. Additional investigations in the PICU population are needed to confirm these findings.
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Affiliation(s)
- Jeffrey J Cies
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, Philadelphia, Pennsylvania.,St. Christopher's Hospital for Children, Philadelphia, Pennsylvania.,Drexel University College of Medicine, Philadelphia, Pennsylvania
| | - Wayne S Moore
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, Philadelphia, Pennsylvania
| | - Adela Enache
- Atlantic Diagnostic Laboratories, Bensalem, Pennsylvania
| | - Arun Chopra
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, Philadelphia, Pennsylvania.,NYU Langone Medical Center, New York, New York.,NYU School of Medicine, New York, New York
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18
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Raffaeli G, Pokorna P, Allegaert K, Mosca F, Cavallaro G, Wildschut ED, Tibboel D. Drug Disposition and Pharmacotherapy in Neonatal ECMO: From Fragmented Data to Integrated Knowledge. Front Pediatr 2019; 7:360. [PMID: 31552205 PMCID: PMC6733981 DOI: 10.3389/fped.2019.00360] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 08/16/2019] [Indexed: 12/27/2022] Open
Abstract
Extracorporeal membrane oxygenation (ECMO) is a lifesaving support technology for potentially reversible neonatal cardiac and/or respiratory failure. As the survival and the overall outcome of patients rely on the treatment and reversal of the underlying disease, effective and preferentially evidence-based pharmacotherapy is crucial to target recovery. Currently limited data exist to support the clinicians in their every-day intensive care prescribing practice with the contemporary ECMO technology. Indeed, drug dosing to optimize pharmacotherapy during neonatal ECMO is a major challenge. The impact of the maturational changes of the organ function on both pharmacokinetics (PK) and pharmacodynamics (PD) has been widely established over the last decades. Next to the developmental pharmacology, additional non-maturational factors have been recognized as key-determinants of PK/PD variability. The dynamically changing state of critical illness during the ECMO course impairs the achievement of optimal drug exposure, as a result of single or multi-organ failure, capillary leak, altered protein binding, and sometimes a hyperdynamic state, with a variable effect on both the volume of distribution (Vd) and the clearance (Cl) of drugs. Extracorporeal membrane oxygenation introduces further PK/PD perturbation due to drug sequestration and hemodilution, thus increasing the Vd and clearance (sequestration). Drug disposition depends on the characteristics of the compounds (hydrophilic vs. lipophilic, protein binding), patients (age, comorbidities, surgery, co-medications, genetic variations), and circuits (roller vs. centrifugal-based systems; silicone vs. hollow-fiber oxygenators; renal replacement therapy). Based on the potential combination of the above-mentioned drug PK/PD determinants, an integrated approach in clinical drug prescription is pivotal to limit the risks of over- and under-dosing. The understanding of the dose-exposure-response relationship in critically-ill neonates on ECMO will enable the optimization of dosing strategies to ensure safety and efficacy for the individual patient. Next to in vitro and clinical PK data collection, physiologically-based pharmacokinetic modeling (PBPK) are emerging as alternative approaches to provide bedside dosing guidance. This article provides an overview of the available evidence in the field of neonatal pharmacology during ECMO. We will identify the main determinants of altered PK and PD, elaborate on evidence-based recommendations on pharmacotherapy and highlight areas for further research.
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Affiliation(s)
- Genny Raffaeli
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Pavla Pokorna
- Department of Pediatrics—ICU, General University Hospital, 1st Faculty of Medicine Charles University, Prague, Czechia
- Department of Pharmacology, General University Hospital, 1st Faculty of Medicine Charles University, Prague, Czechia
- Intensive Care and Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
| | - Karel Allegaert
- Division of Neonatology, Department of Pediatrics, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
- Department of Development and Regeneration, KU Leuven, Leuven, Belgium
| | - Fabio Mosca
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
- Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milan, Italy
| | - Giacomo Cavallaro
- Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, NICU, Milan, Italy
| | - Enno D. Wildschut
- Intensive Care and Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
| | - Dick Tibboel
- Intensive Care and Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, Rotterdam, Netherlands
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19
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Thibault C, Collier H, Naim MY, Heichel J, Schwartz E, Zuppa AF. Patterns of Medication Exposure in Children on Extracorporeal Membrane Oxygenation: A Step in Prioritizing Future Pharmacologic Studies. Crit Care Explor 2019; 1:e0045. [PMID: 32166287 PMCID: PMC7063935 DOI: 10.1097/cce.0000000000000045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
To identify medications administered to pediatric patients on extracorporeal membrane oxygenation and to review the available pharmacokinetics and pharmacodynamics literature for the most commonly administered medications. DESIGN Retrospective single-center study. SETTING ICUs at Children's Hospital of Philadelphia. PATIENTS Pediatric patients supported by extracorporeal membrane oxygenation between October 1, 2014, and September 30, 2018. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Drug exposure was described according to age group (< 1 mo, 1 mo to < 2 yr, 2 to < 12 yr, and > 12 yr) and ICU (cardiac, neonatal, pediatric). The association of drug exposure with patient's characteristics was examined using one-way analysis of variance for categorical variables and linear regression for continuous variables. All pharmacokinetics and pharmacodynamics literature for the 50 most commonly administered medications on extracorporeal membrane oxygenation was reviewed, with inclusion of studies that reported dosing regimens in conjunction with pharmacokinetics or pharmacodynamics data. A total of 179 different medications were administered to 254 children. Cumulative drug exposure increased with the duration of extracorporeal membrane oxygenation from a median (interquartile) of 10 drugs (6-14) at 1 week to 31 drugs (21-45) at 5 weeks following cannulation. There were significant differences in total drug exposure between age groups and ICUs. With exclusion of in vitro studies, published literature was available to support the use of 40% (20/50) of the most commonly administered medications. Dosing guidance was available for 20% (10/50) of medications and was primarily based on simulations and retrospective studies focusing on neonates and infants. CONCLUSIONS This study highlights specific needs for future pharmacokinetics and pharmacodynamics studies. Dosing guidelines are essential to optimize the care of critically ill children supported by extracorporeal membrane oxygenation.
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Affiliation(s)
- Céline Thibault
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Clinical Pharmacology, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Hailey Collier
- Department of Pharmacy Services, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Maryam Y Naim
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Jenna Heichel
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Emily Schwartz
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Athena F Zuppa
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
- Center for Clinical Pharmacology, Children's Hospital of Philadelphia, Philadelphia, PA
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20
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Allegaert K, Flint R, Smits A. Pharmacokinetic modelling and Bayesian estimation-assisted decision tools to optimize vancomycin dosage in neonates: only one piece of the puzzle. Expert Opin Drug Metab Toxicol 2019; 15:735-749. [PMID: 31402708 DOI: 10.1080/17425255.2019.1655540] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Introduction: Vancomycin is commonly administered to neonates, while observational data on therapeutic drug monitoring (TDM, trough levels) suggest that vancomycin exposure and dosage remain substandard. Area covered: Data on vancomycin pharmacokinetics (PK) and its covariates are abundant. Consequently, modeling is an obvious tool to improve targeted exposure, with a shift from TDM trough levels to area under the curve (AUC24h) targets, as in adults. Continuous administration appeared as a practice to facilitate AUC24h target attainment, while Bayesian model-supported targeting emerged as a novel tool. However, the AUC24h/MIC (minimal inhibitory concentration) target itself should consider neonate-specific aspects (bloodstream infections, coagulase-negative staphylococci, protein binding, underexplored causes of variability, like assays, preparation and administration inaccuracies, or missing covariates). Expert opinion: To improve targeted exposure in neonates, initial vancomycin prescription should be based on 'a priori model-based individual dosing' using validated dosing regimens, followed by further tailoring by dosing optimization applying Bayesian estimation-assisted TDM. Future research should focus on the feasibility to integrate these tools (individualized dosing, Bayesian models) in clinical practice, and to perform PK/PD studies in the relevant animal models and human neonatal setting (coagulase-negative staphylococci, bloodstream infections).
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Affiliation(s)
- Karel Allegaert
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam , Rotterdam , the Netherlands.,Department of Development and Regeneration, KU Leuven , Leuven , Belgium
| | - Robert Flint
- Department of Pediatrics, Division of Neonatology, Erasmus MC Sophia Children's Hospital, University Medical Center Rotterdam , Rotterdam , the Netherlands.,Department of Pharmacy, Erasmus University Medical Center , Rotterdam , The Netherlands
| | - Anne Smits
- Department of Development and Regeneration, KU Leuven , Leuven , Belgium.,Neonatal Intensive Care Unit, University Hospitals Leuven , Leuven , Belgium
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21
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Cies JJ, Moore WS, Giliam N, Low T, Enache A, Chopra A. Impact of ex-vivo extracorporeal membrane oxygenation circuitry on daptomycin. Perfusion 2018; 33:624-629. [DOI: 10.1177/0267659118781761] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background: The objective was to determine the alterations of daptomycin (DAP) in a contemporary neonatal/pediatric (1/4-inch) and adolescent/adult (3/8-inch) extracorporeal membrane oxygenation (ECMO) circuit including the Quadrox-i® oxygenator. Methods: Quarter-inch and 3/8-inch, simulated, closed-loop, ECMO circuits were prepared with a Quadrox-i pediatric and Quadrox-i adult oxygenator and blood primed. A one-time dose of DAP was administered into the circuit and serial pre- and post-oxygenator concentrations were obtained at 0-5 minutes and 1, 2, 3, 4, 5, 6 and 24-hour time points. DAP was also maintained in a glass vial and samples were taken from the vial at the same time periods for control purposes to assess for spontaneous drug degradation Results: For both the 1/4-inch and 3/8-inch circuits, there was no significant DAP loss at 24 hours. Additionally, the reference DAP concentrations remained relatively constant during the entire 24-hour study period. Conclusion: This ex-vivo investigation demonstrated no significant DAP loss within an ECMO circuit with both sizes of the Quadrox-i oxygenator at 24 hours. Therapeutic concentrations of DAP in the setting of ECMO may be anticipated with current recommended doses, depending on the amount of extracorporeal volume needed for circuit maintenance in comparison to the patient’s apparent volume of distribution. Additional studies with a larger sample size are needed to confirm these findings.
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Affiliation(s)
- Jeffrey J. Cies
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, PA, USA
- St. Christopher’s Hospital for Children, Philadelphia, PA, USA
- Drexel University College of Medicine, Philadelphia, PA, USA
| | - Wayne S. Moore
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, PA, USA
| | - Nadji Giliam
- St. Christopher’s Hospital for Children, Philadelphia, PA, USA
| | - Tracy Low
- St. Christopher’s Hospital for Children, Philadelphia, PA, USA
| | - Adela Enache
- Atlantic Diagnostic Laboratories, Bensalem, PA, USA
| | - Arun Chopra
- The Center for Pediatric Pharmacotherapy LLC, Pottstown, PA, USA
- NYU Langone Medical Center, New York, NY, USA
- NYU School of Medicine, New York, NY, USA
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22
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Pharmacokinetic/Pharmacodynamic Target Attainment During Extracorporeal Membrane Oxygenation: Does the Circuit Matter? Pediatr Crit Care Med 2017; 18:1090-1091. [PMID: 29099462 DOI: 10.1097/pcc.0000000000001307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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