Evaluation of the Uro-Quick, a new rapid automated system, for the detection of well-characterized antibiotic-resistant bacteria

Journal of Chemotherapy
S RovetaE A Debbia

Abstract

The Uro-Quick system has been employed to detect antibiotic resistance in genotypically and/or phenotypically well-characterized bacterial species including those that might not be easily identified by routine procedure. In order to achieve full agreement between the antibiotic susceptibility results obtained by the reference method (NCCLS) and the Uro-Quick system, the optimal experimental conditions (inoculum size, time of incubation and antibiotic concentration) for each strain to be used by the automatic system were determined. The shorter time periods for generation of correct susceptibility results were 180 min for ampicillin- and ciprofloxacin-resistant Escherichia coli and for ESBL- and Inhibitor-resistant TEM (IRT)-producing E. coli; 360 min for penicillin-susceptible Streptococcus pneumoniae, as well as for strains with reduced susceptibility to this antibiotic (both intermediate, and resistant isolates). The same time was required to detect erythromycin-resistant pneumococci irrespective of their mechanism of resistance (ribosomal methylation and efflux-mediated), Streptococcus pyogenes exhibiting the three erythromycin-resistance phenotypes (constitutive, inducible and M-type) and Klebsiella pneumoniae, Enterobacter...Continue Reading

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Citations

Jan 7, 2015·Enfermedades infecciosas y microbiología clínica·Gabriel Alberto March Rosselló, Miguel Ángel Bratos Pérez

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