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Longitudinal lung function declines among California flavoring manufacturing workers.
Kathleen Kreiss1, Kathleen B Fedan, Muazzam Nasrullah
1Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV 26505, USA. kkreiss@cdc.gov
American Journal of Industrial Medicine
|September 21, 2011
Summary
Spirometric surveillance identified workers with abnormal lung function decline, even with normal FEV(1) levels. This method aids in preventing work-related respiratory issues in flavoring industry employees.
Area of Science:
- Occupational Health
- Pulmonary Medicine
- Industrial Hygiene
Background:
- Flavoring manufacturing workers face risks of bronchiolitis obliterans.
- Serial spirometry data were collected from 20 companies.
Purpose of the Study:
- To assess spirometry quality and identify workers with abnormal lung function decline.
- To analyze lung function decline in relation to occupational risk factors.
Main Methods:
- Spirometry quality was graded.
- Individual workers with excessive forced expiratory volume in 1 second (FEV(1)) decline were identified using relative longitudinal limits.
- Declines were analyzed by occupational risk factors.
Main Results:
- Poorer spirometry quality was noted from commercial providers.
- 9.6% of workers with at least two tests showed abnormal FEV(1) decline.
- Abnormal FEV(1) decline rates were higher in workers exposed to diacetyl and in companies with existing clusters of spirometric obstruction.
Conclusions:
- Spirometric surveillance can identify workers needing intervention for abnormal FEV(1) decline, even with normal FEV(1) values.
- High-quality spirometry and appropriate decline classification minimize misclassification of work-related health effects.
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