Pharmacokinetic/Pharmacodynamic Modeling of Seven Antimicrobials for Empiric Treatment of Adult Bloodstream Infections with Gram-Negative Bacteria in China.

07:00 EST 2nd December 2019 | BioPortfolio

Summary of "Pharmacokinetic/Pharmacodynamic Modeling of Seven Antimicrobials for Empiric Treatment of Adult Bloodstream Infections with Gram-Negative Bacteria in China."

Optimal dosing regimens for achieving a positive clinical outcome were simulated for seven antibiotics commonly used to treat bloodstream infections (BSIs) in adults. Pharmacokinetic/pharmacodynamic (PK/PD) modeling was used to simulate 17 regimens, including meropenem, imipenem, cefepime, ceftazidime, piperacillin-tazobactam, tigecycline, and polymyxin B based on patients' characteristics and the antimicrobial resistance data for the main pathogens isolated from blood specimens in Shandong province (China). A regimen for which the cumulative fraction of response (CFR) was 90% or more was considered optimal. For and , all carbapenem regimens, ceftazidime (2gq8h, 0.5 hr, and 3hr infusion), and piperacillin/tazobactam (4.5gq8h, 3 hr infusion) achieved CFRs above 90%. The meropenem regimen (2gq8h, 3 hr) achieved CFRs above 90% for both ceftriaxone or cefotaxime-resistant (CRO/CTX-R) and . For , ceftazidime and meropenem (2gq8h, 0.5 hr, and 3 hr infusion) achieved optimal CFRs. None of the β-lactam regimens examined achieved a CFR above 80% for . For all examined bacteria, polymyxin B (50 mg q12h) led to a CFR above 90%. PK/PD modeling based on local antimicrobial resistance data provides valuable guidance for clinicians for the administration of empirical antibiotic treatments for BSIs.


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This article was published in the following journal.

Name: Microbial drug resistance (Larchmont, N.Y.)
ISSN: 1931-8448


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