Category Archives: Antimicrobial susceptibility testing

How to read the cumulative antibiogram and its usefulness

Here are example antibiograms for Hunter New England (NSW). These are constructed by assessing the % susceptible for specific bugs and drugs, taking only the first isolate of a species per person per annum.  Where is it possible extrapolate susceptibility … Continue reading

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Extrapolating key antibiotic susceptibilities for Staphylococcus aureus

Originally posted on AIMED – Let's talk about antibiotics:
Indicator antibiotic tested Result Extrapolates to Also susceptible (but not first line) Betalactamase production and/or penicillin susceptibility ? Susceptible ? ? benzylpenicillin ampicillin/ amox dicloxacillin flucloxacillin cephalexin cefazolin Later generation…

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How well is your lab performing antimicrobial susceptibility testing?

Production of reliable AST results is critical for clinicians and their patients. AST results enable correct antibiotic therapy to be directed against the specific pathogen(s). Please review this brief presentations from our bacteriology scientist Fiona Oehme.  EUCAST AST Quality Control F Courtney 2016 … Continue reading

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Antimicrobial susceptibility testing (AST) – EUCAST, CLSI, ECOFFs and Clinical Breakpoint determination

EUCAST is increasingly becoming the dominant international standard for various reasons and its procedures and documentation, including breakpoint tables are available online for free.  For a recent overview of EUCAST, see this Journal of Antimicrobial Chemotherapy 2014 lecture (free access). … Continue reading

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