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Respiratory health in newly hired cotton textile workers.

Authors
Christiani-DC; Wang-XR; Pan-LD; Zhang-HX; Sun-BX; Dai-HL; Eisen-EA; Wegman-DH; Olenchock-SA
Source
Am J Respir Crit Care Med 2001 Apr; 163(5)(2)(Suppl):A845
NIOSHTIC No.
20035708
Abstract
Rationale: The study was conducted to determine early pulmonary responses to cotton dust exposure, including respiratory symptoms and pulmonary function, in previously-unexposed workers. Methods: The cohort was comprised of 225 newly hired workers at three cotton textile mills in Shanghai, China. Workers were young (average age 18 years), non-smoking, previously unexposed to industrial dust, and healthy. Their respiratory health status was followed up at three months and at one year after working, in addition to the pre-employment examination. Results: After working for three months, the incidence was 3.6% for usual cough with phlegm, 6.7% for usual dry cough. At one year, however, no workers reported these symptoms except two (1.5%) who reported cough with phlegm. In contrast, detectable changes in spirometry were observed at one year, with an increase of 43ml for FEV1 at three months versus a decline of 70ml at one year. Workers reporting respiratory symptoms at three months had a greater cross-shift change in FEV1 (delta-FEV1) at one year (-2.3%) than those without symptoms (-0.7%). In addition, workers exposed to high levels of endotoxin and cotton dust experienced a greater change either in delta-FEV, or in FEV, at one year, relative to those exposed to low levels. Conclusion: Respiratory symptoms are the earliest pulmonary response to cotton dust exposure, followed by observable changes in pulmonary function. In spite of reversibility, the ehrly respiratory symptoms, as well as exposure level of endotoxin or cotton dust, may be associated with excess loss of pulmonary function.
Keywords
Cotton-dust; Cotton-industry; Cotton-mill-workers; Cotton-fibers; Textile-finishing; Textile-mills; Textile-workers; Textiles; Textiles-industry; Respiratory-system-disorders; Respiratory-irritants; Pulmonary-system-disorders; Endotoxins; Chronic-degenerative-diseases; Spirometry
CODEN
AJCMED
Publication Date
20010401
Document Type
Abstract
Funding Amount
1348724
Funding Type
Grant
Fiscal Year
2001
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-002421
Issue of Publication
5
ISSN
1073-449X
Source Name
American Journal of Respiratory and Critical Care Medicine. Abstracts of the American Thoracic Society 2001 International Conference, May 18-23, 2001, San Francisco, California
State
MA
Performing Organization
Harvard University
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