A total of 78 isolates of Pseudomonas aeruginosa grouped according to the phenotype for ceftazidime and imipenem susceptibility/resistance were used to assess the accuracy of the Vitek 2 system in antimicrobial susceptibility testing. Comparisons were made with a MIC gradient test for piperacillin-tazobactam, ceftazidime, aztreonam, imipenem, meropenem, gentamicin, and ciprofloxacin. For the total of 546 isolate-antimicrobial combinations tested, the category agreement was 83.6%, with 2.0, 1.6, and 12.8% very major, major, and minor errors, respectively. Vitek 2 accuracy was influenced differently by the mechanism responsible for resistance, and interpretation of the results in relation to phenotype could improve the performance of the system

Performance of Vitek 2 in antimicrobial susceptibility testing of Pseudomonas aeruginosa isolates with different mechanisms of beta-lactams resistance / Mazzariol, Annarita; Aldegheri, Marco; Ligozzi, Marco; LO CASCIO, Giuliana; Koncan, Raffaella; Fontana, Roberta. - In: JOURNAL OF CLINICAL MICROBIOLOGY. - ISSN 0095-1137. - 46:6(2008), pp. 2095-2098. [10.1128/​JCM.02216-07]

Performance of Vitek 2 in antimicrobial susceptibility testing of Pseudomonas aeruginosa isolates with different mechanisms of beta-lactams resistance

LO CASCIO, Giuliana;
2008-01-01

Abstract

A total of 78 isolates of Pseudomonas aeruginosa grouped according to the phenotype for ceftazidime and imipenem susceptibility/resistance were used to assess the accuracy of the Vitek 2 system in antimicrobial susceptibility testing. Comparisons were made with a MIC gradient test for piperacillin-tazobactam, ceftazidime, aztreonam, imipenem, meropenem, gentamicin, and ciprofloxacin. For the total of 546 isolate-antimicrobial combinations tested, the category agreement was 83.6%, with 2.0, 1.6, and 12.8% very major, major, and minor errors, respectively. Vitek 2 accuracy was influenced differently by the mechanism responsible for resistance, and interpretation of the results in relation to phenotype could improve the performance of the system
2008
Performance of Vitek 2 in antimicrobial susceptibility testing of Pseudomonas aeruginosa isolates with different mechanisms of beta-lactams resistance / Mazzariol, Annarita; Aldegheri, Marco; Ligozzi, Marco; LO CASCIO, Giuliana; Koncan, Raffaella; Fontana, Roberta. - In: JOURNAL OF CLINICAL MICROBIOLOGY. - ISSN 0095-1137. - 46:6(2008), pp. 2095-2098. [10.1128/​JCM.02216-07]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2978635
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