关于在无菌部位感染中检测细菌病原体的PCR检测诊断收益的多中心经验
Mohammad Rubayet Hasan1,2,3, Patrick Tang4,5, Anju Sharma4
1Hamilton Regional Laboratory Medicine Program, Hamilton, Ontario, Canada.
概括
与培养相比,多重PCR显著改善了在无菌部位检测细菌病原体,特别是在儿童中. 这种增强的诊断产量有助于更好地管理严重感染.
科学领域:
- 临床微生物学 临床微生物学
- 传染病 传染病 传染病
- 分子诊断学 分子诊断学
背景情况:
- 无菌体部位的感染很少见,但很严重,需要准确和快速的诊断.
- 有效的抗微生物管理在很大程度上依赖于及时识别病原体.
- 多重聚合酶连锁反应 (PCR) 在诊断这些感染方面提供了潜在的进步.
研究的目的:
- 在无菌部位样本 (不包括血液和脑脊髓液) 中评估多重PCR对细菌病原体的诊断产量.
- 将多重PCR与传统培养方法的性能进行比较.
- 评估多重PCR在成人和儿科人口中的实用性.
主要方法:
- 在两个不同的实验室 (HRLMP,加拿大和Sidra Medicine,卡塔尔) 独立开发和验证细菌病原体PCR面板.
- 来自实验室信息系统的培养和PCR数据的回顾性分析.
- 使用麦克纳马或千平方测试的诊断产量的统计比较.
主要成果:
- 多重PCR在验证研究中显示出100%的灵敏度.
- 总体PCR阳性为38.7%,与512个标本的培养为6.1%相比.
- 在成人和儿科组中,PCR显著优于培养 (p < .001),在儿科患者中产量明显更高 (64.7%与17.4%相比).
- 通常检测到的病原体包括*Streptococcus pneumoniae*,*Streptococcus pyogenes*和*Staphylococcus aureus*;肺部液是最常见的阳性样本类型.
结论:
- 与单独培养相比,多重PCR显著提高了无菌部位感染中的病原体检测.
- 该研究支持将PCR与培养相结合,以改善诊断和抗菌药物管理.
- 在儿科患者群体中观察到特别的益处,突出显示PCR在治疗严重儿科感染中的价值.
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