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Δευτέρα 7 Μαΐου 2018

A systematic approach to the selection of the appropriate avibactam concentration for use with ceftazidime in broth microdilution susceptibility testing [PublishAheadOfPrint]

Selection of the avibactam concentration to combine with ceftazidime in susceptibility testing was determined using Gram-negative isolates with characterized β-lactamases predefined as "susceptible" or "resistant" based on the known inhibition spectrum of avibactam. MIC values were determined by broth microdilution of ceftazidime with fixed concentrations and ratios of avibactam. A constant concentration of 4 μg/mL of avibactam was selected for susceptibility testing with ceftazidime because of its ability to correctly categorize susceptible and resistant isolates while minimizing categorical errors.



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