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在重复使用和长期使用后,N95® 过面部部呼吸器被SARS-CoV-2 污染
James S Ford1, Ralph C Wang2, Benjamin Stephenson3
1Department of Emergency Medicine, University of California, San Diego, San Diego, CA, USA.
在COVID-19期间重新使用N95呼吸器增加了污染风险. 接触更多COVID-19患者的卫生保健工作者有更高的N95 FFR污染率,这表明应该避免重复使用.
科学领域:
- 传染性疾病 传染性疾病
- 职业健康 职业健康 职业健康
- 流行病学 流行病学
背景情况:
- N95过面部呼吸器 (FFR) 对于医疗保健人员 (HCP) 的保护至关重要.
- 在COVID-19大流行期间,使用了扩展使用和重复使用等策略,以保护N95 FFR.
- 在急诊室 (ED) 设置中,N95 FFR可能受到SARS-CoV-2的污染需要进行调查.
研究的目的:
- 为了确定ED HCP使用的N95 FFR上SARS-CoV-2污染的流行率.
- 在现实环境中识别与N95 FFR污染相关的因素.
主要方法:
- 展望性,多中心队列研究涉及六个学术医疗中心.
- 使用实时定量聚合酶连锁反应评估的N95 FFR污染.
- 后勤回归分析以确定与污染相关的因素.
主要成果:
- 在测试的N95FFR (44/245) 中,有18.0%被SARS-CoV-2RNA污染.
- 接受治疗的COVID-19患者数量较多与增加的N95 FFR污染 (aOR 2.3) 独立相关.
- 在N95 FFR上使用面罩或手术口罩并没有减少污染,并且与高污染患病率 (分别为25%和22%) 相关.
结论:
- 接触COVID-19患者是N95 FFR污染的重要风险因素.
- 在N95 FFR上辅助使用面罩或手术口罩并不能防止污染.
- N95 FFR重复使用和延长使用策略会增加接触暴露的风险,应避免使用.
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