Correlation of Netilmicin Agar Dilution and Disk Diffusion Susceptibilities

AUTOR(ES)

Goldmann, Donald A.

RESUMO

A study of 283 isolates of gram-negative bacilli revealed a good correlation (r = −0.74) between disk diffusion zones of inhibition and agar dilution minimal inhibitory concentrations. Regression analysis suggested that strains with zone sizes ⋜11 mm should be considered resistant, but 34 of 45 strains resistant by minimal inhibitory concentration (including 27 strains of Pseudomonas aeruginosa) would have been called susceptible using this break point.

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