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使用膜过方法从阳性血培瓶中直接识别和对微生物的抗微生物敏感性测试微生物,使用膜过方法

Tsui-Ping Liu^1,2, Hui-Fang Wu¹, Pai-Ling Chang³

¹Department of Laboratory Medicine, Tao-Yuan General Hospital, Ministry of Health and Welfare, Taoyuan, Taiwan.

BMC microbiology

|October 2, 2025

概括

一种新的膜过方法可以将血液中感染的诊断速度加快10-12小时. 这种更快的方法显示了高精度的格拉姆阴性细菌和可靠的抗微生物敏感性测试结果.

科学领域:

临床微生物学临床微生物学
诊断技术诊断技术的使用
传染性疾病传染性疾病

背景情况:

血流感染 (BSI) 是一个重要的全球健康问题,导致高发病率和死亡率.
目前的诊断方法,如传统的血液培养 (BC),是缓慢的,通常需要18-48小时.
矩阵辅助激光脱/电离飞行时间质谱 (MALDI-TOF MS) 提供更快的识别,但在直接的抗微生物敏感性测试 (AST) 中面临局限性.

研究的目的:

开发一种快速可靠的方法,用于从阳性BC瓶中直接识别和AST微生物.
建立基于膜过的协议,以简化BSI诊断.

主要方法:

使用膜过技术直接处理阳性BC瓶.
使用MALDI-TOF MS识别了微生物,并进行了AST.
结果与传统的BC工作流进行了比较.

主要成果:

膜过方法实现了76.5%的整体识别成功率,其中格拉姆阴性细菌 (88.1%) 和无气菌 (80.0%) 的成功率更高.
抗微生物敏感性测试与常规方法具有很高的一致性,所有测试组的基本一致性 (EA) 超过95%.
对于格拉姆阴性细菌来说,周转时间减少了10-12小时.

结论:

膜过方法为BSI诊断提供了一个有希望的,更快的工作流程,对格兰氏阴性细菌特别有效.
需要进一步优化,以提高Gram阳性细菌和酵母菌识别的准确性.
这种简化方法可以提高BSI的及时和有针对性的抗菌疗法.

关键词:

抗微生物敏感性测试试验抗微生物敏感性测试血流感染血流感染马尔迪-托夫 (MALDI-TOF) 是一个国家元首.膜过方法是一种膜过方法.快速识别快速识别快速识别

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