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Relationship of pulmonary impairment in simple coal workers' pneumoconiosis to type of radiographic opacity.

Authors
Seaton-A; Lapp-NL; Morgan-WK
Source
Br J Ind Med 1972 Jan; 29(1):50-55
NIOSHTIC No.
00023816
Abstract
From a group of 1,461 working coal miners who participated in an epidemiological study, 223 men with simple pneumoconiosis were selected on the basis of the type of small rounded opacity noted to be present in their chest films. No differences in spirometry or lung volumes were found between those with the micronodular (q) and those with pinhead (p) opacities. Twenty five nonsmoking miners with category 2 or 3 simple coal workers' pneumoconiosis were subsequently selected for further pulmonary function testing. Studies of lung volumes and pulmonary mechanics showed no difference between those with the pinhead and micronodular types of opacity; however, transfer factor was somewhat lower in those with the former.
Keywords
NIOSH-Author; Abnormalities; Radiography; Pulmonary-function-tests; Lung-effects; Measurement-methods; Respiratory-system-disorders; Airway-resistance; Coal-mining; Dust-control; Inhalation
CODEN
BJIMAG
Publication Date
19720101
Document Type
Journal Article
Fiscal Year
1972
NTIS Accession No.
NTIS Price
Issue of Publication
1
ISSN
0007-1072
NIOSH Division
ALFORD
Priority Area
Respiratory-system-disorders
Source Name
British Journal of Industrial Medicine
State
WV
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