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    Rapid susceptibility profiling of carbapenem-resistant Klebsiella pneumonia

    Access Status
    Open access via publisher
    Authors
    Mulroney, K.
    Hall, J.
    Huang, X.
    Turnbull, E.
    Bzdyl, N.
    Chakera, Aron
    Naseer, U.
    Corea, E.
    Ellington, M.
    Hopkins, K.
    Wester, A.
    Ekelund, O.
    Woodford, N.
    Inglis, T.
    Date
    2017
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Mulroney, K. and Hall, J. and Huang, X. and Turnbull, E. and Bzdyl, N. and Chakera, A. and Naseer, U. et al. 2017. Rapid susceptibility profiling of carbapenem-resistant Klebsiella pneumonia. Scientific Reports. 7 (1).
    Source Title
    Scientific Reports
    DOI
    10.1038/s41598-017-02009-3
    ISSN
    2045-2322
    School
    Curtin Medical School
    URI
    http://hdl.handle.net/20.500.11937/63339
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 The Author(s). The expanding global distribution of multi-resistant Klebsiella pneumoniae demands faster antimicrobial susceptibility testing (AST) to guide antibiotic treatment. Current ASTs rely on time-consuming differentiation of resistance and susceptibility after initial isolation of bacteria from a clinical specimen. Here we describe a flow cytometry workflow to determine carbapenem susceptibility from bacterial cell characteristics in an international K. pneumoniae isolate collection (n = 48), with a range of carbapenemases. Our flow cytometry-assisted susceptibility test (FAST) method combines rapid qualitative susceptible/non-susceptible classification and quantitative MIC measurement in a single process completed shortly after receipt of a primary isolate (54 and 158 minutes respectively). The qualitative FAST results and FAST-derived MIC (MIC FAST ) correspond closely with broth microdilution MIC (MIC BMD , Matthew's correlation coefficient 0.887), align with the international AST standard (ISO 200776-1; 2006) and could be used for rapid determination of antimicrobial susceptibility in a wider range of Gram negative and Gram positive bacteria.

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