Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks

Barry, A. L. ; Brown, S. D. ; Novick, W. J.
Springer
Published 1995
ISSN:
1435-4373
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract In vitro susceptibility tests were performed with 350 selected strains ofStreptococcus pneumoniae to evaluate disk diffusion tests with 30 μg and 1 μg cefotaxime disks. Zones were compared to MICs of cefotaxime with and without its desacetyl metabolite. Cefotaxime was two to eight times more active than desacetyl cefotaxime, but the two compounds were additive when combined in vitro. For 30 μg disks, zone size breakpoints were ≤27 mm, 28–30 mm and ≥31 mm for resistant, intermediate and susceptible, respectively. For 1 μg disks, those zone size criteria were reduced to ≤13 mm, 14–16 mm and ≥17 mm. The 30 μg disk that is currently available for testing other species can be used for testing pneumococci; however, the 1 μg disk has some important advantages.
Type of Medium:
Electronic Resource
URL:
_version_ 1798296204476416000
autor Barry, A. L.
Brown, S. D.
Novick, W. J.
autorsonst Barry, A. L.
Brown, S. D.
Novick, W. J.
book_url http://dx.doi.org/10.1007/BF01690885
datenlieferant nat_lic_papers
hauptsatz hsatz_simple
identnr NLM206284764
issn 1435-4373
journal_name European journal of clinical microbiology & infectious diseases
materialart 1
notes Abstract In vitro susceptibility tests were performed with 350 selected strains ofStreptococcus pneumoniae to evaluate disk diffusion tests with 30 μg and 1 μg cefotaxime disks. Zones were compared to MICs of cefotaxime with and without its desacetyl metabolite. Cefotaxime was two to eight times more active than desacetyl cefotaxime, but the two compounds were additive when combined in vitro. For 30 μg disks, zone size breakpoints were ≤27 mm, 28–30 mm and ≥31 mm for resistant, intermediate and susceptible, respectively. For 1 μg disks, those zone size criteria were reduced to ≤13 mm, 14–16 mm and ≥17 mm. The 30 μg disk that is currently available for testing other species can be used for testing pneumococci; however, the 1 μg disk has some important advantages.
package_name Springer
publikationsjahr_anzeige 1995
publikationsjahr_facette 1995
publikationsjahr_intervall 8004:1995-1999
publikationsjahr_sort 1995
publisher Springer
reference 14 (1995), S. 724-726
search_space articles
shingle_author_1 Barry, A. L.
Brown, S. D.
Novick, W. J.
shingle_author_2 Barry, A. L.
Brown, S. D.
Novick, W. J.
shingle_author_3 Barry, A. L.
Brown, S. D.
Novick, W. J.
shingle_author_4 Barry, A. L.
Brown, S. D.
Novick, W. J.
shingle_catch_all_1 Barry, A. L.
Brown, S. D.
Novick, W. J.
Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
Abstract In vitro susceptibility tests were performed with 350 selected strains ofStreptococcus pneumoniae to evaluate disk diffusion tests with 30 μg and 1 μg cefotaxime disks. Zones were compared to MICs of cefotaxime with and without its desacetyl metabolite. Cefotaxime was two to eight times more active than desacetyl cefotaxime, but the two compounds were additive when combined in vitro. For 30 μg disks, zone size breakpoints were ≤27 mm, 28–30 mm and ≥31 mm for resistant, intermediate and susceptible, respectively. For 1 μg disks, those zone size criteria were reduced to ≤13 mm, 14–16 mm and ≥17 mm. The 30 μg disk that is currently available for testing other species can be used for testing pneumococci; however, the 1 μg disk has some important advantages.
1435-4373
14354373
Springer
shingle_catch_all_2 Barry, A. L.
Brown, S. D.
Novick, W. J.
Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
Abstract In vitro susceptibility tests were performed with 350 selected strains ofStreptococcus pneumoniae to evaluate disk diffusion tests with 30 μg and 1 μg cefotaxime disks. Zones were compared to MICs of cefotaxime with and without its desacetyl metabolite. Cefotaxime was two to eight times more active than desacetyl cefotaxime, but the two compounds were additive when combined in vitro. For 30 μg disks, zone size breakpoints were ≤27 mm, 28–30 mm and ≥31 mm for resistant, intermediate and susceptible, respectively. For 1 μg disks, those zone size criteria were reduced to ≤13 mm, 14–16 mm and ≥17 mm. The 30 μg disk that is currently available for testing other species can be used for testing pneumococci; however, the 1 μg disk has some important advantages.
1435-4373
14354373
Springer
shingle_catch_all_3 Barry, A. L.
Brown, S. D.
Novick, W. J.
Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
Abstract In vitro susceptibility tests were performed with 350 selected strains ofStreptococcus pneumoniae to evaluate disk diffusion tests with 30 μg and 1 μg cefotaxime disks. Zones were compared to MICs of cefotaxime with and without its desacetyl metabolite. Cefotaxime was two to eight times more active than desacetyl cefotaxime, but the two compounds were additive when combined in vitro. For 30 μg disks, zone size breakpoints were ≤27 mm, 28–30 mm and ≥31 mm for resistant, intermediate and susceptible, respectively. For 1 μg disks, those zone size criteria were reduced to ≤13 mm, 14–16 mm and ≥17 mm. The 30 μg disk that is currently available for testing other species can be used for testing pneumococci; however, the 1 μg disk has some important advantages.
1435-4373
14354373
Springer
shingle_catch_all_4 Barry, A. L.
Brown, S. D.
Novick, W. J.
Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
Abstract In vitro susceptibility tests were performed with 350 selected strains ofStreptococcus pneumoniae to evaluate disk diffusion tests with 30 μg and 1 μg cefotaxime disks. Zones were compared to MICs of cefotaxime with and without its desacetyl metabolite. Cefotaxime was two to eight times more active than desacetyl cefotaxime, but the two compounds were additive when combined in vitro. For 30 μg disks, zone size breakpoints were ≤27 mm, 28–30 mm and ≥31 mm for resistant, intermediate and susceptible, respectively. For 1 μg disks, those zone size criteria were reduced to ≤13 mm, 14–16 mm and ≥17 mm. The 30 μg disk that is currently available for testing other species can be used for testing pneumococci; however, the 1 μg disk has some important advantages.
1435-4373
14354373
Springer
shingle_title_1 Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
shingle_title_2 Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
shingle_title_3 Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
shingle_title_4 Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
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timestamp 2024-05-06T09:48:23.277Z
titel Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
titel_suche Criteria for testing the susceptibility ofStreptococcus pneumoniae to cefotaxime and its desacetyl metabolite using 1 μg or 30 μg cefotaxime disks
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