[Validity of the ABAC II system: applicability in the hospital laboratory and verification of breakpoint concentrations in the determination of antibiotic sensitivity].

Two different sensitivity testing methods were evaluated on 183 bacterial strains of Gram-negative clinical isolates in relation to 13 antimicrobial drugs. Comparison between both methods: conventional technique of disk diffusion (Kirby-Bauer) and the automated ABAC breakpoints system, has shown a good agreement of the results (91.1%) according to several investigators. The authors analyze the role of ABAC system and its achievement in routine work of a medium bacteriological hospital laboratory.