从阳性瓶中进行质谱和自动化抗微生物敏感性测试以快速识别短期培养
Peng-Peng Tian1, Shan-Shan Su1, Li-Sha Zhu1
1Laboratory Department, The First Affiliated Hospital of Yangtze University, Jing Zhou, Hubei, China.
BMC infectious diseases
|June 6, 2024
概括
这项研究引入了一种快速的方法来识别血液培养中的细菌,大大缩短了结果的时间. 这种新方法提供了更快,更可靠的识别和抗菌素敏感性测试,改善了患者的治疗.
科学领域:
- 临床微生物学 临床微生物学
- 传染性疾病 传染性疾病
- 诊断技术 诊断技术的使用
背景情况:
- 早期抗生素治疗对于败血症患者的结果至关重要.
- 血液感染 (BSI) 需要快速识别 (ID) 和抗菌感应性测试 (AST).
- 目前的方法需要长时间的潜伏期,延迟治疗.
研究的目的:
- 从阳性血液培养物中评估一种新型的细菌ID和AST快速检测方法.
- 为了比较快速方法与传统诊断技术的性能.
主要方法:
- 短时间化 (57小时) 阳性血液培养在亚格板上.
- 使用MALDI-TOF质谱 (MS) 进行快速识别.
- 使用BD M50系统进行快速的AST.
主要成果:
- 培养时间从24小时缩短到57小时.
- 实现了对生物体ID的高精度:90.6%的格拉姆阳性,98.5%的格拉姆阴性细菌和100%的真菌.
- 对AST结果的高度同意 (基本协议>98.5%,类别协议>97.1%).
- 与传统方法相比,快速方法将整体处理时间缩短了大约24小时.
结论:
- 评估的方法为血液培养提供了更快,更可靠的ID和AST结果.
- 这种快速的方法是及时管理血液感染的宝贵工具.
- 该方法可以处理大多数阳性血液培养物,促进迅速有效的患者治疗.
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