将基于NGS的血液感染识别与传统培养方法进行比较,以加强ICU护理:一项综合性研究
Wei Wang1, Varun Chauhan2, Yutian Luo3
1Department of Endocrinology, Shenzhen People's Hospital, Second Clinical Medical College of Jinan University, First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong, China.
Frontiers in cellular and infection microbiology
|September 27, 2024
概括
下一代测序 (NGS) 测定Bactfast和Fungifast有效地识别了ICU患者的血液感染,检测了传统方法遗漏的非培养细菌. 这些分子工具为全面的病原体识别提供了更好的灵敏度.
科学领域:
- 医学微生物学 医学微生物学
- 分子诊断学 分子诊断
- 传染性疾病 传染性疾病
背景情况:
- 在重症监护室 (ICU) 中,准确识别传染病至关重要.
- 如聚合酶链反应 (PCR) 和下一代测序 (NGS) 等分子技术已建立用于病原体检测.
- 传统的培养方法在识别所有致病原体,特别是非培养物种方面存在局限性.
研究的目的:
- 评估Bactfast和Fungifast (NGS基试验) 在ICU环境中的血液感染的诊断效用.
- 将这些NGS试验的性能与传统培养方法进行比较.
- 评估NGS的敏感性和特异性,以识别广泛的病原体,包括不可培养的病原体.
主要方法:
- 在一年内从ICU患者收集了500个血液样本.
- 进行了传统的血液培养,MALDI-TOF,VITEK®2紧系统以及基于NGS的Bactfast和Fungifast分析.
- 在所有方法中比较病原体识别结果.
主要成果:
- 传统培养检测到分别在26.8%和4.8%的样本中发现了细菌和真菌生长.
- 基于NGS的Bactfast在38.2%的样本中发现了细菌,其中包括33种不能培养的病原体.
- 基于NGS的Fungifast显示了与培养相比较的真菌检测率; *Candida albicans* 是最常见的真菌分离物.
- 确定的关键细菌病原体包括*Klebsiella pneumoniae*,*Enterococcus faecalis*和*Escherichia coli*. 这些病原体包括:
结论:
- 基于NGS的Bactfast和Fungifast在ICU患者中检测出各种细菌和真菌病原体时具有很高的灵敏度.
- 这些分子测试通过识别不可培养的有机体,优于传统的培养方法.
- 通过NGS进行快速和全面的病原体识别可能会提高ICU的临床结果.
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