Department of Anesthesia and Intensive Care, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong.
Am J Infect Control. 2011 Nov;39(9):782-4. doi: 10.1016/j.ajic.2010.12.015. Epub 2011 Jun 12.
Nosocomial airborne disease transmission can be important in some epidemics. An oxygen mask incorporating a high-efficiency particulate (HEPA) filter may reduce the chance of inhaling airborne particles. In a randomized controlled crossover volunteer study, the median ratio of ambient:intramask 0.02 to 1-μ particles was significantly higher for the HEPA oxygen mask than for a Hudson-type mask (P < .001), and was ≥100 in 59%-64% of subjects. The use of HEPA masks may protect patients receiving supplementary oxygen against airborne pathogens.
医院空气传播疾病在某些传染病中可能很重要。带有高效微粒空气（HEPA）过滤器的氧气面罩可能会降低吸入空气传播颗粒的机会。在一项随机对照交叉志愿者研究中，与 Hudson 型面罩相比，HEPA 氧气面罩的环境/面罩内 0.02 至 1 微米颗粒的中位数比值明显更高（P <.001），并且在 59%-64%的受试者中≥100。使用 HEPA 口罩可能会保护接受补充氧气的患者免受空气传播病原体的侵害。
