Predicting Susceptibility of Streptococcus pneumoniae to Ceftriaxone and Cefotaxime by Cefuroxime and Ceftizoxime Disk Diffusion Testing
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چکیده
منابع مشابه
Predicting susceptibility of Streptococcus pneumoniae to ceftriaxone and cefotaxime by cefuroxime and ceftizoxime disk diffusion testing.
In this study, disk diffusion testing with ceftizoxime and cefuroxime was evaluated for use in predicting the susceptibility of Streptococcus pneumoniae to ceftriaxone and cefotaxime. Of the 194 isolates included in this study, 138 were susceptible, 34 were intermediate, and 22 were resistant to cefotaxime by MIC testing; 138 isolates were susceptible, 35 were intermediate, and 21 were resistan...
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The diffusion disk susceptibility of Staphylococcus aureus, Enterobacteriaceae, and Pseudomonas aeruginosa to cefotaxime was determined. A 30-mug disk provided data for the susceptibility of P. aeruginosa, but yielded extremely large zones of inhibition against Enterobacteriaceae. A 5-mug disk seemed to provide the most useful susceptibility data for S. aureus and Enterobacteriaceae.
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Patel et al. (4) compared the serum bactericidal titers (SBTs) and the time serum drug concentrations remained above the MICs (T . MIC) of ceftizoxime and cefotaxime against three intermediately penicillin-resistant Streptococcus pneumoniae isolates. MICs were # 1.0 mg/ml, SBTs were . 1:2, and T . MIC exceeded 50% of dosage intervals. They concluded that ceftizoxime’s longer T . MIC compensates...
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Kirby-Bauer disk susceptibility tests with five standard cephalosporin disks were performed on 23 penicillin-resistant Streptococcus pneumoniae isolates for which ceftriaxone MICs were 0.125 to 4 micrograms/ml. Cefuroxime disk inhibition zone diameters distinguished clearly isolates for which ceftriaxone MICs were > or = 2 micrograms/ml from more susceptible strains, whereas cephalothin, ceftiz...
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Two hundred and thirty-nine penicillinase-positive and 240 penicillinase-negative strains of Neisseria gonorrhoeae were tested for their susceptibility to cefotaxime. All were susceptible to cefotaxime at a concentration of 0.062 micrograms/ml. Penicillinase-negative strains were less susceptible than penicillinase-positive strains. This is attributed to the use of prophylactic antibiotics by p...
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ژورنال
عنوان ژورنال: Journal of Clinical Microbiology
سال: 1999
ISSN: 0095-1137,1098-660X
DOI: 10.1128/jcm.37.11.3707-3710.1999