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Cumulative Asbestos Exposure and Forced Vital Capacity.

PB90153552

Publication Date	1975
Personal Author	Ayer, H.; Burg, J.
Page Count	21
Abstract	Part of the data from a retrospective study of asbestos (1332214) textile workers was used to relate loss in forced vital capacity (FVC) to cumulative asbestos exposure. Using occupational histories and the results of air sampling analyses, estimates of individual cumulative asbestos fiber exposures were made for asbestos textile workers. Only those workers with more than 10 years of exposure were included in the analysis. The patterns of exposure in the production workers indicated high exposures in the 1930s, dramatic reductions in the late 1930s to early 1940s, and some further reduction to about 1950 with little change thereafter to the conclusion of the study. A relationship was developed between the ratio of the observed FVC to predicted FVC and the logarithm of exposure by linear regression. Tests were also made using office workers in the same textile facility. Weavers and yarn production workers had FVCs which were less than the predicted values and less than those of the office workers. A progressive effect was noted of asbestos dust exposure on FVC. Each doubling of cumulative asbestos fiber exposure above 100 fiber years/cubic centimeter resulted in a loss of 5 to 10% in FVC.
Keywords	Industrial medicine Asbestos Respiration Respiratory diseases Textile industry Exposure Toxicity Hazardous materials Airborne wastes Toxic substances Occupational safety and health CAS 1332-21-4 Airborne pollutants
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 41I - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	Cincinnati Univ., OH. Dept. of Environmental Health.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199009

Cumulative Asbestos Exposure and Forced Vital Capacity.

Cumulative Asbestos Exposure and Forced Vital Capacity.
PB90153552

Publication Date	1975
Personal Author	Ayer, H.; Burg, J.
Page Count	21
Abstract	Part of the data from a retrospective study of asbestos (1332214) textile workers was used to relate loss in forced vital capacity (FVC) to cumulative asbestos exposure. Using occupational histories and the results of air sampling analyses, estimates of individual cumulative asbestos fiber exposures were made for asbestos textile workers. Only those workers with more than 10 years of exposure were included in the analysis. The patterns of exposure in the production workers indicated high exposures in the 1930s, dramatic reductions in the late 1930s to early 1940s, and some further reduction to about 1950 with little change thereafter to the conclusion of the study. A relationship was developed between the ratio of the observed FVC to predicted FVC and the logarithm of exposure by linear regression. Tests were also made using office workers in the same textile facility. Weavers and yarn production workers had FVCs which were less than the predicted values and less than those of the office workers. A progressive effect was noted of asbestos dust exposure on FVC. Each doubling of cumulative asbestos fiber exposure above 100 fiber years/cubic centimeter resulted in a loss of 5 to 10% in FVC.
Keywords	Industrial medicine Asbestos Respiration Respiratory diseases Textile industry Exposure Toxicity Hazardous materials Airborne wastes Toxic substances Occupational safety and health CAS 1332-21-4 Airborne pollutants
Source Agency	National Institute for Occupational Safety and Health
NTIS Subject Category	57U - Public Health & Industrial Medicine 57Y - Toxicology 94D - Job Environment 41I - Job Environment 68G - Environmental Health & Safety 68A - Air Pollution & Control
Corporate Authors	Cincinnati Univ., OH. Dept. of Environmental Health.; National Inst. for Occupational Safety and Health, Cincinnati, OH.
Supplemental Notes	Sponsored by National Inst. for Occupational Safety and Health, Cincinnati, OH.
Document Type	Technical Report
NTIS Issue Number	199009