What are the limitations of antimicrobial susceptibility testing in Enterobacter infections?

Updated: Jun 18, 2019
  • Author: Susan L Fraser, MD; Chief Editor: Michael Stuart Bronze, MD  more...
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Unfortunately, these elegant methods are not flawless, and reports of falsely susceptible (less frequently, falsely resistant) bacteria are by no means rare in daily clinical practice.

Many resistance mechanisms are not detectable with these routine tests, and this is particularly true for the production of some beta-lactamases (see Medical Care).

A good knowledge of the major resistance mechanisms is important for the interpretation of the crude sensitivity results. Consultation with a senior microbiologist and/or an infectious disease specialist should be considered when the organism is resistant to several antibiotics or when additional testing to newer antibiotics is being considered.

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