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Performance Evaluation of the Newly Developed BD Phoenix NMIC-500 Panel Using Clinical Isolates of Gram-Negative Bacilli

 Byeol Yi Park  ;  Demiana Mourad  ;  Jun Sung Hong  ;  Eun-Jeong Yoon  ;  Dokyun Kim  ;  Hyukmin Lee  ;  Seok Hoon Jeong 
 ANNALS OF LABORATORY MEDICINE, Vol.39(5) : 470-477, 2019 
Journal Title
Issue Date
Anti-Bacterial Agents/pharmacology ; Bacillus/drug effects ; Bacillus/isolation & purification ; Bacterial Proteins/genetics ; Drug Resistance, Bacterial/drug effects ; Drug Resistance, Bacterial/genetics ; Enterobacteriaceae/drug effects ; Enterobacteriaceae/isolation & purification ; Gram-Negative Bacteria/isolation & purification* ; Microbial Sensitivity Tests/methods* ; beta-Lactamases/genetics
Antimicrobial susceptibility testing ; BD Phoenix NMIC-500 panel ; Carbapenemase-producing organisms ; Performance
BACKGROUND: The emergence of carbapenem resistance among gram-negative bacilli (GNB), mediated by carbapenemase production, has necessitated the development of a simple and accurate device for detecting minimum inhibitory concentrations (MICs) and resistance mechanisms, especially carbapenemase production. We evaluated the performance of the BD Phoenix NMIC-500 panel (BD Diagnostic Systems, Sparks, MD, USA) for antimicrobial susceptibility testing (AST) and carbapenemase-producing organism (CPO) detection. METHODS: We used 450 non-duplicate clinical GNB isolates from six general hospitals in Korea (409 Enterobacteriaceae and 41 glucose non-fermenting bacilli [GNFB] isolates). AST for meropenem, imipenem, ertapenem, ceftazidime, and ceftazidime/avibactam, and CPO detection were performed using the Phoenix NMIC-500 panel. Broth microdilution was used as the reference method for AST. The rates of categorical agreement (CA), essential agreement (EA), minor error (mE), major error (ME), and very major error (VME) were calculated in each antimicrobial. In addition, PCR and sequencing were performed to evaluate the accuracy of CPO detection by the BD Phoenix NMIC-500 panel, and the rate of correct identification was calculated. RESULTS: The CA rates were >90% for all antimicrobials tested with the Enterobacteriaceae isolates, except for imipenem (87.2%). The GNFB CA rates ranged from 92.7% to 100% for all antimicrobials. The ME rates were 1.7% for Enterobacteriaceae and 0% for GNFB. The panel identified 97.2% (243/250) of the carbapenemase-producing isolates. CONCLUSIONS: The BD Phoenix NMIC-500 panel shows promise for AST and CPO detection.
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1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Dokyun(김도균) ORCID logo https://orcid.org/0000-0002-0348-5440
Yoon, Eun-Jeong(윤은정)
Lee, Hyuk Min(이혁민) ORCID logo https://orcid.org/0000-0002-8523-4126
Jeong, Seok Hoon(정석훈) ORCID logo https://orcid.org/0000-0001-9290-897X
Hong, Jun Sung(홍준성)
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