Beckett W S, Billings C E
Am Ind Hyg Assoc J. 1985 May;46(5):274-6. doi: 10.1080/15298668591394806.
Federal regulations recognize the need to determine whether individuals are physically able to perform their job while wearing respirators. A variety of safety and workplace factors should also be considered at the time that a respiratory protective device is evaluated for use by a particular worker. In most negative pressure respirators, inspiratory resistance constitutes the major load on the respiratory system. In normals, the major load to the cardiovascular system occurs with heavy, self-contained respirators. In the absence of objective guidelines for the use of respirators by impaired workers, careful examination and conservative clinical judgement, and the willingness to re-assess choices must form the basis of respirator selection.
联邦法规认识到有必要确定个人在佩戴呼吸器时是否具备身体能力来履行其工作职责。在评估特定工人使用呼吸防护设备时，还应考虑各种安全和工作场所因素。在大多数负压呼吸器中，吸气阻力是呼吸系统的主要负荷。在正常人中，心血管系统的主要负荷出现在使用重型自给式呼吸器时。在缺乏针对身体受损工人使用呼吸器的客观指导方针的情况下，仔细检查、保守的临床判断以及重新评估选择的意愿必须成为呼吸器选择的基础。
