Resazurin microplate test method for rapid determination of colistin resistance in carbapenem-resistant Acinetobacter baumanii isolates
LABORATORY MEDICINE(2023)
摘要
Background Colistin-resistant Acinetobacter baumannii isolates are extremely important pathogens for hospital-acquired infections.Objective To investigate the effectiveness of the resazurin microplate assay (REMA) for the rapid determination of colistin resistance.Methods Susceptibility for colistin was investigated in vitro by the broth microdilution method (BMD) and the resazurin microplate assay (REMA) on 106 carbapenem-resistant Acinetobacter baumannii isolates.Results The results of both test methods were compared, and the categorical agreement between them was found to be 100%. No minor, major, or very major discrepancy was observed between the 2 methods.Conclusions The most important advantages of REMA are that the results are obtained within 6 hours compared to the reference method, that it is easy to evaluate because it is colorimetric, and that the susceptibility result can be reported to the clinician on the same day as bacterial identification.
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关键词
Acinetobacter baumannii,rapid antibiogram susceptibility test,resazurin,colistin,carbapenem resistance,colorimetric test
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