在加拿大,CLSI氨基糖化物断点变化对所选格拉姆阴性细菌的加拿大影响
Ellen Germaine Avery1, Taylor Laughlin2, Kevin Brown3
1Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada.
概括
最近的临床和实验室标准研究所 (CLSI) 对氨基甘油酸的断点变化对肠杆菌和 Pseudomonas aeruginosa 的易感性产生了最小的影响. 然而,这些修订特别影响了产生β-乳糖酶的Enterobacterales.
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
- 传染病 传染病 传染病
背景情况:
- 临床和实验室标准研究所 (CLSI) 定期更新抗菌素敏感性测试 (AST) 断点.
- 氨基糖化物是治疗严重格兰氏阴性感染的关键抗生素.
- 肠杆菌和Pseudomonas aeruginosa是医院获得感染的常见原因.
研究的目的:
- 评估最近CLSI氨基糖化物断点修订对肠杆菌和Pseudomonas aeruginosa易感性的影响.
- 为了确定特定的细菌亚群不成比例地受到断点变化的影响.
主要方法:
- 来自加拿大一所学术医院的AST数据的回顾性分析.
- 在实施CLSI断点之前和之后的易感率的比较.
- 结果按细菌物种和关键耐药性机制分层 (例如,β-乳糖酶的产生).
主要成果:
- 对Enterobacterales和Pseudomonas aeruginosa的总体氨基糖化物敏感性在修订后基本保持不变.
- 观察到对产生β-乳糖酶的肠杆菌的敏感性有显著影响.
- 特定的氨基糖化物可能会根据耐药性表型表现出不同程度的影响.
结论:
- 最近的CLSI氨基糖化物中断点修订对Enterobacterales和Pseudomonas aeruginosa的整体敏感性产生了有限的影响.
- 临床医生应该意识到,在生产β-乳糖酶的肠杆菌中,敏感性解释可能发生变化.
- 在断点变化后,对抗微生物敏感性模式的持续监测至关重要.
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