Antimicrobial susceptibility | BSAVA Library
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Antimicrobial susceptibility

Antimicrobial susceptibility

Gram positive Gram negative
Cocci Bacilli
Anaerobes Enterobacteriacae
Listeria
Aminoglycosides Amikacin Green.png Green.png Yellow.png Yellow.png Green.png Blue.png Blue.png Green.png Yellow.png Green.png Green.png Green.png Green.png Green.png Yellow.png Green.png Red.png
Gentamicin Green.png Green.png Yellow.png Yellow.png Green.png Blue.png Blue.png Green.png Yellow.png Green.png Green.png Green.png Green.png Green.png Yellow.png Green.png Red.png
Beta-lactams Amoxicillin Red.png Red.png Green.png Green.png Green.png Green.png Green.png Red.png Red.png Yellow.png Blue.png Yellow.png Yellow.png Green.png Blue.png Green.png Blue.png
Ampicillin Red.png Red.png Green.png Green.png Green.png Green.png Green.png Red.png Red.png Yellow.png Blue.png Yellow.png Yellow.png Green.png Blue.png Green.png Blue.png
Amoxicillin-clavulanate Red.png Green.png Green.png Green.png Green.png Green.png Green.png Yellow.png Green.png * Green.png Green.png Green.png Yellow.png Green.png Blue.png Green.png Red.png
Cephalosporins Cefalexin Red.png Green.png Blue.png Green.png Blue.png Blue.png Blue.png Red.png Red.png Green.png Yellow.png Green.png Yellow.png Yellow.png Blue.png Green.png Red.png
Cefotaxime (3rd gen) Red.png Green.png Blue.png Green.png Blue.png Blue.png Blue.png Green.png Red.png Green.png Green.png Green.png Green.png Green.png Blue.png Green.png Red.png
Cefovecin (3rd gen) Red.png Green.png Blue.png Green.png Blue.png Blue.png Blue.png Red.png Red.png Green.png Green.png Green.png Green.png Green.png Blue.png Green.png Red.png
Ceftazidime (3rd gen) Red.png Green.png Blue.png Green.png Blue.png Blue.png Blue.png Green.png Red.png Green.png Green.png Green.png Green.png Green.png Green.png Green.png Red.png
Ceftiofur (3rd gen) Red.png Green.png Blue.png Green.png Blue.png Blue.png Blue.png Red.png Red.png Green.png Green.png Green.png Green.png Green.png Blue.png Green.png Red.png
Cefuroxime (2nd gen) Red.png Green.png Blue.png Green.png Blue.png Blue.png Blue.png Red.png Red.png Green.png Yellow.png Green.png Green.png Yellow.png Blue.png Green.png Red.png
Fluoroquinolones Enrofloxacin Yellow.png Green.png Yellow.png Yellow.png Yellow.png Blue.png Blue.png Yellow.png Yellow.png Green.png Green.png Green.png Green.png Green.png Yellow.png Green.png Yellow.png
Marbofloxacin Yellow.png Green.png Yellow.png Yellow.png Yellow.png Blue.png Blue.png Yellow.png Yellow.png Green.png Green.png Green.png Green.png Green.png Yellow.png Green.png Yellow.png
Pradofloxacin Yellow.png Green.png Yellow.png Yellow.png Yellow.png Yellow.png Yellow.png Yellow.png Yellow.png Green.png Green.png Green.png Green.png Green.png Yellow.png Green.png Yellow.png
Lincosamides Clindamycin Green.png Green.png Blue.png Green.png Blue.png Green.png Green.png Yellow.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png
Lincomycin Yellow.png Green.png Blue.png Green.png Blue.png Green.png Green.png Yellow.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png
Macrolides Azithromycin Red.png Green.png Blue.png Green.png Yellow.png Green.png Green.png Green.png Blue.png Blue.png Blue.png Blue.png Blue.png Yellow.png Blue.png Yellow.png Blue.png
Erythromycin Red.png Green.png Blue.png Green.png Yellow.png Green.png Green.png Green.png Blue.png Blue.png Blue.png Blue.png Blue.png Yellow.png Blue.png Yellow.png Blue.png
Nitroimidazoles Metronidazole Blue.png Blue.png Blue.png Blue.png Blue.png Green.png Green.png Yellow.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png Blue.png
Sulphonamides Trimethoprim sulfamethoxazole Green.png Green.png Yellow.png Green.png Green.png Blue.png Yellow.png Red.png Red.png Yellow.png Yellow.png Yellow.png Yellow.png Green.png Blue.png Green.png Blue.png
Tetracyclines Doxycycline Green.png Green.png Green.png Green.png Green.png Yellow.png Yellow.png Yellow.png Red.png Yellow.png Yellow.png Yellow.png Blue.png Red.png Blue.png Green.png Red.png
Oxytetracycline Red.png Green.png Green.png Green.png Green.png Yellow.png Yellow.png Yellow.png Red.png Yellow.png Yellow.png Yellow.png Blue.png Red.png Blue.png Green.png Red.png

FN1Antimicrobial susceptibility chart listing the most likely susceptibility and resistance patterns to commonly available antibiotics. This chart is a summary and does not predict the susceptibility or resistance of an individual isolate; each case must be verified using up-to-date literature published by drug manufacturers. * = Extended-spectrum beta-lactamases (ESBLs) are normally inhibited by clavulanic acid; however, AmpC is resistant to clavulanic acid.

Reproduced from Allerton and Nuttall (2021), with permission from the publisher. Data from this Formulary, Sykes and Greene (2011), and published Veterinary Committee on Antimicrobial Susceptibility Testing and Clinical and Laboratory Standards Institute breakpoints.

Green.png Susceptible

Yellow.png Caution with interpretation and dosing

Blue.png Intrinsic resistance

Red.png Acquired resistance

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