Trial reportDrugs in R&D2018
Population Pharmacokinetic Modelling of Ceftazidime and Avibactam in the Plasma and Epithelial Lining Fluid of Healthy Volunteers.
Trial report in Drugs in R&D, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01395420 (A Phase I Open-Label, 2-Part, 3-Cohort, Single-Centre Study to Assess the Concentration of Avibactam and Ceftazidime in Epithelial Lining Fluid), which is not on this map. Cited by 36 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase I Open-Label, 2-Part, 3-Cohort, Single-Centre Study to Assess the Concentration of Avibactam and Ceftazidime in Epithelial Lining Fluid (ELF) and Plasma Using at Least Two Different Dosing Regimens in Healthy Volunteers
Who cites it
36 citing papers in PubMed, 2 syntheses or guidelines pooled it, 48 citations in OpenAlex.
- Comparison of Ceftolozane-Tazobactam and Ceftazidime-Avibactam in the Treatment of Multidrug-Resistant/Difficult-to-Treat Resistant Pseudomonas aeruginosa Infections: A Systematic Review and Meta-analysis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2026Pooled it
- Antibiotics in Adult Cystic Fibrosis Patients: A Review of Population Pharmacokinetic Analyses.Clinical pharmacokinetics · 2021Pooled it
- Comparative effectiveness and safety of aztreonam-avibactam or ceftazidime-avibactam plus aztreonam versus best available therapy for severe gram-negative infections: a systematic review, meta-analysis, and trial sequential analysis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2026Article
- Comparison of the Efficacy and Safety of Intravenous Ceftazidime-Avibactam and Intrathecal/Intraventricular Polymyxin B Sulfate in the Treatment of CNS Infections Caused by KPC-Antibiotics (Basel, Switzerland) · 2026Article
- Methodologies for Population Pharmacokinetic Modeling of Target-Site Drug Exposure: A Narrative Review of Current Strategies.Clinical pharmacokinetics · 2026Review
- Population Pharmacokinetics of a Novel Oral Fosfomycin Prophylactic Scheme in the Plasma and Prostate of Patients Undergoing Endoscopic Surgery for Benign Prostatic Hyperplasia.Clinical pharmacokinetics · 2026Article
- Unlocking potentials: the impact of meropenem, meropenem-vaborbactam, and ceftazidime-avibactam in combating carbapenem-resistantAntimicrobial agents and chemotherapy · 2025Article
- Impact of ceftazidime avibactam on colonization by carbapenem resistant Enterobacterales during treatment of related infections.Scientific reports · 2025Article
- Determining an appropriate fosfomycin (ZTI-01) dosing regimen in pneumonia patients by utilizing minimal PBPK modeling and target attainment analysis.Antimicrobial agents and chemotherapy · 2025Article
- Clinical efficacy, safety and pharmacokinetics of novel β-lactam/β-lactamase inhibitor combinations: a systematic review.JAC-antimicrobial resistance · 2025Review
- PKPD modeling of the inoculum effect of combined ceftazidime/avibactam and colistin against KPC-3Antimicrobial agents and chemotherapy · 2025Article
- Towards a holistic approach to pulmonary infections. Insights from the Sixth Annual Meeting of Spanish Experts 2024.Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2025Review
- Population Pharmacokinetics-Based Evaluation of Ceftazidime-Avibactam Dosing Regimens in Critically and Non-Critically Ill Patients With Carbapenem-ResistantInfection and drug resistance · 2025Article
- Ceftriaxone Efficacy for Mycobacterium avium Complex Lung Disease in the Hollow Fiber and Translation to Sustained Sputum Culture Conversion in Patients.The Journal of infectious diseases · 2024Article
- Ceftazidime-Avibactam for the Treatment of Carbapenem-Resistant Klebsiella Pneumoniae Infection: A Retrospective, Single Center Study.Infection and drug resistance · 2024Article
- Adequacy of the Dosing and Infusion Time of Ceftazidime/Avibactam for the Treatment of Gram-Negative Bacterial Infections: A PK/PD Simulation Study.Infection and drug resistance · 2024Article
- Retrospective Tertiary Care-Based Cohort Study on Clinical Characteristics and Outcomes of Ceftazidime-Avibactam-Resistant Carbapenem-ResistantCritical care research and practice · 2024Article
- Ceftazidime/Avibactam and Meropenem/Vaborbactam for the Management of Enterobacterales Infections: A Narrative Review, Clinical Considerations, and Expert Opinion.Antibiotics (Basel, Switzerland) · 2023Review
- Combination Therapy of Ceftazidime/Avibactam for the Treatment of Patients Infected with Carbapenem-Resistant Klebsiella pneumoniae: A Multicenter Retrospective Study.Infectious diseases and therapy · 2023Article
- Rationale and evidence for the use of new beta-lactam/beta-lactamase inhibitor combinations and cefiderocol in critically ill patients.Annals of intensive care · 2023Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesOur objective was to develop population pharmacokinetic (PK) models for ceftazidime and avibactam in the plasma and epithelial lining fluid (ELF) of healthy volunteers and to compare ELF concentrations to plasma PK/pharmacodynamic (PD) targets.
methodsPlasma and ELF population PK models were developed for ceftazidime and avibactam concentration data from 42 subjects (NCT01395420). Two- and three-compartment plasma PK models were fitted to ceftazidime and avibactam plasma PK data, and different plasma-ELF linked models were evaluated. Using best-fitting models, plasma and ELF concentration-time profiles were simulated for 1000 subjects. ELF concentration-time profiles for ceftazidime/avibactam 2000-500 mg every 8 h were compared with plasma PK/PD targets for ceftazidime (50% of time above [fT >] 8 mg/l) and avibactam (50% fT > 1 mg/l).
resultsThree-compartment PK models best fitted the plasma concentration data for ceftazidime and avibactam. ELF data for both drugs were best described by a direct response (instantaneous equilibrium) model. Ceftazidime plasma-ELF relationships were best described by a saturable Michaelis-Menten model. For avibactam, departure from plasma-ELF relationship linearity was more modest than for ceftazidime. ELF:plasma penetration ratios of both ceftazidime (52%) and avibactam (42%) at plasma concentrations relevant for efficacy (~ 8 mg/l for ceftazidime and ~ 1 mg/l for avibactam) were greater than previously calculated using non-compartmental area under the curve (AUC) methods, which average across the entire concentration range. Ceftazidime and avibactam ELF exposures exceeded their respective plasma PK/PD time-above-threshold targets by the dosing interval mid-point in most subjects.
conclusionsThis compartmental modelling analysis suggests ELF exposures of both ceftazidime and avibactam exceed levels required for efficacy in plasma.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.