Journal Article

BSAC standardized disc susceptibility testing method (version 7)

J. M. Andrews

in Journal of Antimicrobial Chemotherapy

Published on behalf of British Society for Antimicrobial Chemotherapy

Volume 62, issue 2, pages 256-278
Published in print August 2008 | ISSN: 0305-7453
Published online May 2008 | e-ISSN: 1460-2091 | DOI: https://dx.doi.org/10.1093/jac/dkn194
BSAC standardized disc susceptibility testing method (version 7)

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The changes that have been made to the previous version of the recommendations (version 6) are as follows: medium and incubation condition for testing Acinetobacter spp. (Tables 1 and 6); use of cefoxitin as an indicator antibiotic for detecting methicillin/oxacillin/cefoxitin resistance in coagulase-negative staphylococci (Tables 1, 6 and 11); MIC breakpoint for co-trimoxazole based on the trimethoprim concentration in a 1:19 combination with sulfamethoxazole (Tables 7, 10, 11, 12, 15, 16 and 19); advice on the use of azithromycin for the treatment of infections with Salmonella typhi (footnote to Table 7); amendment to the recommendation for cefuroxime for the treatment of infections with Proteus mirabilis (footnote Table 7); MIC and zone diameter breakpoints for Stenotrophomonas maltophilia only (Table 10); MIC breakpoints for daptomycin (Tables 11 and 15); clarification for staphylococci that the neomycin zone diameter breakpoints are for topical use only and differentiate the isolates outside the ‘wild-type’ population in Table 11; clarification for β-haemolytic streptococci that the linezolid zone diameter breakpoints relate to an MIC breakpoint of 2 mg/L as no data for the intermediate category are currently available (Table 15); clarification that strains with reduced susceptibility to fluoroquinolones give no zone of inhibition with a 30 µg nalidixic acid disc (Tables 16 and 21); erythromycin is no longer used for therapy of Neisseria gonorrhoeae, but may be tested for epidemiological purposes (Table 17); clarification that the ciprofloxacin zone diameter breakpoint for Neisseria meningitidis relates to the MIC breakpoint of 0.03 mg/L as no data for the intermediate category are currently available; clarification that the ciprofloxacin zone diameter breakpoints for Campylobacter spp. relate to an MIC breakpoint of 0.5 mg/L as no data for the intermediate category are currently available; clarification that for ciprofloxacin and vancomycin zone diameter breakpoints for coryneform organisms relate to an MIC breakpoint of 0.5 and 4 mg/L, respectively, as no data for the intermediate category are currently available; MIC and zone diameter breakpoints for Gram-negative rods isolated from urinary tract infections have been expanded to include Klebsiella spp.; and a definition of coliforms is also included (Table 26).

Keywords: breakpoints; disc testing; MICs

Journal Article.  11009 words.  Illustrated.

Subjects: Medical Oncology ; Critical Care

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