ArticleEuropean journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology2015
Evaluation of several phenotypic methods for the detection of carbapenemase-producing Pseudomonas aeruginosa.
Article in European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Challenges in laboratory diagnosis and antibiotic treatment options for a newly described Pseudomonas aeruginosa class A beta-lactamase type GES-62 strain.GMS infectious diseases · 2025Article
- Phenotypic and genotypic investigation of metallo-β-lactamases inIranian journal of basic medical sciences · 2022Article
- Evaluation of Six Phenotypic Methods for the Detection of Carbapenemases in Gram-Negative Bacteria With Characterized Resistance Mechanisms.Annals of laboratory medicine · 2017Article
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5 authors.
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Abstract
The purpose of this investigation was to compare several phenotypic methods, including combined disk tests (CDT) containing metallo-β-lactamase (MBL) inhibitors or cloxacillin, and the Carba NP test for the detection of carbapenemase-producing Pseudomonas aeruginosa (CPPA). A new CDT using imipenem (10 μg) ± cloxacillin 4,000 μg and the Carba NP test were evaluated to detect CPPA. In addition, four commercially available combined disks containing a carbapenem and ethylene-diamine-tetra-acetic acid (EDTA) or dipicolinic acid (DPA) as the inhibitor were tested in order to detect MBL-positive P. aeruginosa. All these phenotypic methods were evaluated on 188 imipenem non-susceptible P. aeruginosa (CPPA, n = 75) isolates divided into 26 well-characterized collection strains and 162 non-duplicate clinical isolates referred to the national reference laboratory in 2013. For the total of 188 isolates tested, CDT containing EDTA or DPA displayed high sensitivities (99%) and specificities (95%) for detecting MBL-producing isolates. CDT with cloxacillin showed a sensitivity and specificity of 97%/96% compared to 88%/99% for the Carba NP test in order to detect CPPA. For the 162 clinical isolates, CDT containing EDTA or DPA displayed a high negative predictive value (NPV) (99%) for detecting MBL-producing isolates. CDT with cloxacillin showed an NPV of 98%, compared to 95% for the Carba NP test in order to detect CPPA. In our setting, CDT associating imipenem ± EDTA or ± DPA performed best for the detection of MBL-producing P. aeruginosa. Imipenem/imipenem-cloxacillin test yielded good NPV to exclude the presence of MBL in imipenem non-susceptible isolates.
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