Department of Nursing and Health Sciences, Tung Wah College, Hong Kong, China.
Workplace Health Saf. 2012 Dec;60(12):511-5. doi: 10.1177/216507991206001202.
Fit testing of respirators has been recommended, legislated, and implemented in many countries. In the United States, the National Institute for Occupational Safety and Health advocates a fit check, or seal check, before donning a respirator for each fit test. The aim of this study was to investigate the relationship between respirator fitness and performance of the fit check upon donning a respirator. Eighty-four first-year undergraduate nursing students were selected for this study; they were divided randomly into four groups. None had performed a fit test or fit check before being recruited for this study. The real-time self-developed fit test method was used to measure the ambient air particle concentration outside and inside the respirator. Results showed significant differences between groups trained to perform the fit check and those untrained. The overall fit factors were higher in the two groups trained to perform the fit check. The overall fit factors were lower in the two groups not trained to do the fit check. N95 respirators are designed to form a tight seal against wearers' faces. Each time workers don respirators, they should evaluate proper fit. Training wearers in how to fit check increases the likelihood that they will adjust respirators to proper fit.
许多国家都推荐、立法并实施了呼吸器适配性测试。在美国，国家职业安全与健康研究所（NIOSH）提倡在每次适配性测试前，使用者在佩戴呼吸器之前进行适配性检查或密封检查。本研究旨在探讨呼吸器的适配性与佩戴呼吸器时适配性检查性能之间的关系。本研究共选取了 84 名一年级护理专业本科生，他们被随机分为四组。在参与本研究之前，所有参与者都没有进行过适配性测试或适配性检查。研究采用实时自开发的适配性测试方法来测量呼吸器内外的环境空气颗粒物浓度。结果表明，接受过适配性检查培训的组与未接受过培训的组之间存在显著差异。接受过适配性检查培训的两组的整体适配因子较高。未接受过适配性检查培训的两组的整体适配因子较低。N95 呼吸器旨在与佩戴者的面部形成紧密密封。每次工人戴上呼吸器时，都应评估其适配性是否合适。培训工人如何进行适配性检查可以增加他们正确调整呼吸器的可能性。
