对二醇敏感性测试的现实性能:从对格拉姆阴性细菌的前性多中心研究中得出的见解
Alvaro Irigoyen-von-Sierakowski1, Azahara Ocaña1, Rosa Sánchez-Mayoral1
1Department of Clinical Microbiology and Infectious Diseases, Gregorio Marañón General University Hospital, Dr. Esquerdo 46, Madrid 28007, Spain.
JAC-antimicrobial resistance
|October 28, 2024
概括
磁盘扩散 (DD) 提供了一种在临床实验室中测试 cefiderocol 敏感性的实用方法. 这项研究发现DD与商业微稀释 (BMD) 方法之间存在很高的一致性,支持DD.
科学领域:
- 临床微生物学 临床微生物学
- 抗生素敏感性测试 抗生素敏感性测试
- 传染性疾病 传染性疾病
背景情况:
- 塞菲德罗科尔是治疗多抗药性格拉姆阴性细菌感染的关键抗生素.
- 通过微稀释 (BMD) 进行标准的 cefiderocol 敏感性测试对许多实验室来说具有挑战性.
- 评估可用的替代方法对于有效的临床管理至关重要.
研究的目的:
- 评估圆盘扩散 (DD) 的现实性能,以测试 cefiderocol 敏感性.
- 使用前性收集的临床隔离物,将DD与商业BMD方法 (ComASP®) 进行比较.
- 根据EUCAST 2023年和2024年的标准,评估基醇敏感性测试.
主要方法:
- 分析了来自西班牙60家医院的1472种格拉姆阴性细菌分离物.
- 使用光盘扩散 (30μg光盘,Liofilchem) 测试 cefiderocol 的敏感性.
- 与商业 BMD 方法 (ComASP® Cefiderocol, Liofilchem) 的比较.
主要成果:
- 在DD和ComASP® BMD方法之间,总体一致性很高 (96.9%).
- 44个隔离体显示DD的耐药性,但BMD的敏感性;两个隔离体显示相反.
- 更新的EUCAST 2024断点降低了肠杆菌的敏感性 (95.3%与92.6%相比).
结论:
- 磁盘扩散是一种快速,易于使用和简单的方法,用于例行测试 cefiderocol 敏感性.
- 对于易受感染的隔离物,ComASP® BMD与DD显示出良好的一致性.
- 在解释耐药分离物的结果时,建议谨慎,特别是在技术不确定性的领域.
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