Abstract
Occupational exposures remain an important cause of lung disease. A number of PFTs are used in the occupational setting, including spirometry, PEF recordings, methacholine challenge testing, lung volume, and DL(CO). These tests are used in a number of situations, including the clinical evaluation and management of patients with possible occupational lung disorders, preplacement and fitness-for-duty examinations, medical screening of exposed workers, impairment and disability evaluations, and research. The diagnosis of occupational lung disease has serious consequences for a worker and, in addition to a careful occupational history, usually requires objective assessment using PFTs. Serial PFTs are useful in following such patients and screening exposed populations of workers for respiratory conditions.
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