通过使用周围假肢组织样本对周围假肢关节感染进行培养,组织病理学和mNGS的诊断性能进行比较:一项前性临床研究
Lan Wei1, Yali Yu2, Shaohua Wang3
1Zhengzhou Orthopaedic Hospital, Zhengzhou, People's Republic of China.
Infection and drug resistance
|September 8, 2025
概括
下一代元基因组测序 (mNGS) 显示出诊断周围假肢关节感染 (PJI) 的潜力,特别是在困难的情况下. 然而,它并没有超越传统方法,在临床广泛采用之前需要进一步的研究.
科学领域:
- 整形外科 整形外科 整形外科
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 周围假肢关节感染 (PJI) 在骨科手术中构成了重大挑战.
- 准确的诊断对于有效的治疗和患者的治疗结果至关重要.
- 评估新型诊断工具,如甲基因组下一代测序 (mNGS) 是必要的.
研究的目的:
- 为了比较位病理学,培养和mNGS对周围假肢关节感染 (PJI) 的诊断性能.
- 评估每个方法在潜在患者队列中的灵敏度,特异性和预测值.
主要方法:
- 一项前性试验涉及215名疑似膝盖PJI的患者.
- 用组织病理学,微生物培养和mNGS分析了组织样本.
- 诊断准确性是使用既定标准 (MSIS 2011,ICM 2018) 评估的.
主要成果:
- 在分析的58名患者中,mNGS显示了63.2%的灵敏度和80.0%的特异性.
- 培养表现出更高的特异性 (95.0%) 和积极的预测值 (96.5%).
- 组织病理学具有52.6%的灵敏度和100%的特异性;常见的病原体是金黄色葡萄球菌和凝结酶负型葡萄球菌.
结论:
- mNGS是PJI诊断的一个有前途的辅助工具,特别是在培养负面场景中.
- 目前的证据表明,mNGS在整体准确性方面没有超过传统方法.
- 局限性包括潜在的错误阳性和缺乏抗菌素敏感性数据,需要谨慎解释和进一步研究.
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