在气溶生成过程中使用的面罩的评估
Alessandra A Pratt1,2, Grant D Brown3, Jarrett E Walsh4
1Department of Occupational and Environmental Health, University of Iowa, 145 N Riverside Dr., Iowa City, IA, 52242, USA. Alessandra.Pratt@va.gov.
Scientific reports
|September 21, 2023
概括
一种新的负压面罩 (NPFS) 在模拟喉腔镜检查过程中有效地减少了病毒气溶. 标准面罩没有提供显著的气溶防护,突显了NPFS对感染控制的好处.
科学领域:
- 医疗器械 医疗器械
- 传染病控制和控制传染病
- 呼吸系统医学 呼吸系统医学
背景情况:
- 透鼻柔性喉腔镜是一种产生气溶的手术,具有感染风险.
- 标准的一次性塑料面罩可能不够含有患者产生的气溶.
- 开发了一种新的负压面罩 (NPFS),以减轻在喉腔镜检查期间的气溶传播.
研究的目的:
- 与标准塑料面罩相比,评估NPFS在控制病毒气溶方面的有效性.
- 为了评估各种颗粒大小的气溶减少.
主要方法:
- 利用模拟患者咳机来以气溶的方式将MS2菌作为SARS-CoV-2的替代物.
- 在模拟咳条件下测试了标准塑料面罩和NPFS.
- 在不同的NPFS流速 (38.6 LPM和10 LPM) 测量了面罩内部和外部的病毒和颗粒度.
主要成果:
- 标准面罩在病毒气溶度内外没有显著差异.
- 在38.6 LPM (p < 0.01) 运行时,NPFS显著降低了外部的病毒和颗粒度.
- 在10 LPM时,NPFS并没有显著降低病毒度,但确实降低了颗粒数 (p < 0.05).
结论:
- 该NPFS显示显著的潜力减少病毒气溶传输在灵活的喉腔镜.
- 气溶控制NPFS的最佳性能取决于流量.
- 进一步的研究可能会在临床环境中验证NPFS的有效性,以提高患者和医护人员的安全性.
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