Respiratory protection is a complex field involving industrial hygiene
, physics, physiology, toxicology, medicine, anthropology, engineering
, law, and worksite administration. Although the use of respirators is
widespread, they are the least effective and often the most costly me
thod of protecting workers. Preferred methods of protection are engine
ering controls that eliminate exposure and substitution of the agent f
or one of lesser toxicity. However, in work situations where alternati
ve methods are not available, a well-designed and well-monitored respi
ratory protection program can still provide a safe environment for the
soldier and civilian worker. With the enactment and enforcement of th
e Occupational Health and Safety Act, worker protection has gained a m
uch higher priority among employers and health officials. The field is
dynamic and some of the medical screening procedures outlined in TB M
ED 502 (Respiratory Protection) are outdated. Industrial processes and
state-of-the-art protective equipment change rapidly. Because certifi
ed occupational health physicians and nurses are not always available,
health care workers need a fundamental understanding of respiratory p
rotection.