检测ESBL产生的Klebsiella oxytoca复合体与VITEK 2系统和查切线,以执行确认性测试

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Updated: May 7, 2026

Bacterial Detection & Identification Using Electrochemical Sensors

Bacterial Detection & Identification Using Electrochemical Sensors

Published on: April 23, 2013

Edgar I Campos-Madueno¹, Gisele Peirano^2,3, Claudia Aldeia¹

¹Institute for Infectious Diseases (IFIK), University of Bern, Bern, Canton of Bern, Switzerland.

Journal of clinical microbiology

|May 9, 2025

概括

区分扩展谱β-乳酸酶 (ESBL) 生产的Klebsiella oxytoca复合物 (KoC) 是至关重要的. 与VITEK 2/AES不同,VITEK 2与CLSI ESBL确认测试可靠地区分ESBL-KoC,并建议减少不必要的测试.

科学领域:

临床微生物学临床微生物学
抗微生物耐药性抗微生物耐药性
细菌病原体是一种细菌病原体.

背景情况:

克莱布西拉氧托卡综合体 (KoC) 是重要的医院病原体.
KoC可以携带可传播的扩展谱β-乳糖酶 (ESBL) 基因,使患者的管理复杂化.
在临床上,精确区分产生ESBL的KoC (ESBL-KoC) 和高产OXY型β-乳糖酶KoC (hOXY-KoC) 是必不可少的.

研究的目的:

评估VITEK 2系统,有或没有高级专家系统 (AES),用于在KoC中检测ESBL生产者.
评估VITEK 2与临床实验室标准研究所 (CLSI) ESBL确认测试 (ESBL-CTs) 结合的性能,以区分ESBL-KoC.
为了最大限度地减少不必要的ESBL-CTs,为关键的抗菌剂建立KoC特定的查切线.

主要方法:

测试了44种特征KoC菌株 (11种ESBL-KoC,21种HOXY-KoC) 使用VITEK 2与AES和没有AES.
将VITEK 2/AES结果与VITEK 2结合CLSI ESBL-CT (磁盘组合试验) 的结果进行比较.
对 ceftriaxone, cefpodoxime, ceftazidime, cefotaxime 和 aztreonam 的查截止值进行了分析.

主要成果:

在检测ESBL-KoC时,VITEK 2/AES显示了100%的灵敏度和64.7%的特异性.
与CLSI ESBL-CTs一起的VITEK 2实现了100%的灵敏度和97.5%的特异性.
拟议的查截止值显示所有44个菌株的100%灵敏度和高特异性/正预测值.

结论:

维特克2高级专家系统 (AES) 在区分ESBL-KoC和HOXY-KoC方面表现不佳.
与CLSI ESBL-CTs相结合的VITEK 2提供了一种可靠的方法来区分ESBL-KoC.
建议修订查切线,以提高ESBL-KoC的检测,并减少确认测试的需要.

关键词:

在 AST AST AST 中.在CTX-M中使用.这就是ESBL.克莱布西拉 (Klebsiella oxytocaca) 是一种有机植物.氧气是一种氧气.维特克 2 维特克 2 切断的切断,切断的切断.检测检测检测检测检测

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