Medical evaluation for respirator use.

The purpose of a respirator is to prevent the inhalation of harmful airborne substances or to provide a source of respirable air when breathing in oxygen-deficient atmospheres. For a physician to recommend the use of respirator general background information on respiratory-protective devices is required. The first part of this clinical practice review describes the general aspects of industrial hygiene respirators and a respirator-certification program. The second part addresses matters related to medical certification for respirator use. Medical certification for respirators is an important part of the activities of the occupational physician. To determine whether a worker is able to tolerate the added strain of a respiratory protective device is a complex process in which factors such as fitness for work, health of the individual, characteristics of the work itself and the properties, type, and requirements of the respiratory protective device, have to be considered. Medical certification is of utmost importance for respirator use, and it should be viewed as an element in a comprehensive respiratory protection program. A comprehensive program is the key element in affording the workers' effective respiratory protection once the initial steps of the hierarchy of methods of hazard control have proved insufficient or infeasible. As a result, the need for the industrial hygiene/safety officer the worker; the employer and the medical professional to work as a team is much more than in any other field of occupational medicine-a necessary requirement for making the right decision. Am. J. Ind. Med. 37:142-157, 2000. (C) 2000 Wiley-Liss, Inc.