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KMID : 0381319810200020023
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Korean Journal of Occupational Health
1981 Volume.20 No. 2 p.23 ~ p.31
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Study of Byssinosis in Textile Workers
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정치경/Chung, Chee Kyung
김정만/이원철/조규상/Kim, Jung Man/Lee, Won Chul/Cho, Kyu Sang
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Abstract
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An epidemiological study of byssinosis was carried out by the standard questionnaire in a group of 343 women employed in carding and spinning room, and acute changes of ventilatory function during work shift were measured on Monday in 121 of 343 carders and spinners in a textile mill.
Symptoms of byssinosis were found in 13.4％ of 67 carders, in 1.6％ of 276 spinners. Symptoms of byssinosis had no relation to duration of cotton dust exposure.
In 121 carders and spinners forced expiratory volume in 1 second (FEV_(1.0)) decreased significantly during work on Monday. There were no significant differences of these changes between workers with and without history of byssinosis, and the duration of dust exposure did not affect the decrease of FEV_(1.0) on Monday.
FEV_(1.0) decreased 4.5％ during work on Monday whereas maximal mid-expiratory flow (MMF) and maximal expiratory flow at 50％ of forced vital capacity (?_(max50)) on maximal expiratory flow-volume (MEFV) curve decreased 7.0％ and 10.1％. MMF and ?_(max50) were more sensitive indices than FEV_(1.0) in the detection of acute ventilatory changes caused by cotton dust.
The average concentrations of respirable cotton dust(lint-free dust, fibers≤? in length), measured with vertical elutriator, were 0.220 ㎎/㎥ in carding room and 0.167 ㎎/㎥ in spinning room.
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