Rogers K B
J Clin Pathol. 1980 Nov;33(11):1086-91. doi: 10.1136/jcp.33.11.1086.
Disposable face masks used in hospitals have been assessed for the protection afforded the patient and the wearer by challenges of simulated natural conditions of stress. Operating theatre masks made of synthetic materials allow the wearer to breathe through the masks, and these have been shown to protect the patient well but the wearer slightly less. Cheaper paper masks are worn for ward duties, and of these only the Promask protected in area in front of the wearer: air does not pass through this mask, expired air is prevented from passing forward, and the wearer breathes unfiltered air. All the other paper masks tested allowed many bacteria-laden particles to pass through them.
已通过模拟自然压力条件的挑战，对医院使用的一次性口罩给予患者和佩戴者的防护进行了评估。由合成材料制成的手术室口罩可让佩戴者透过口罩呼吸，这些口罩已被证明能很好地保护患者，但对佩戴者的保护稍逊一筹。较便宜的纸质口罩用于病房护理工作，其中只有“防护口罩”能保护佩戴者前方区域：空气不会透过这种口罩，呼出的空气被阻止向前传播，佩戴者呼吸的是未经过滤的空气。测试的所有其他纸质口罩都允许许多携带细菌的颗粒透过。
