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作 者:马庆晏[1] 李德鸿[1] 钟毓娜[1] 周晓燕[1] 陈巍[1] RylanderR
出 处:《卫生研究》1998年第3期158-160,共3页Journal of Hygiene Research
基 金:卫生部青年科学基金
摘 要:对1990年招收的一组棉纺厂新工人129例(失访19例,实际调查110例)分别于暴露前,暴露10周及1年时进行了随访,研究棉尘接触与症状发生、肺功能改变及气道反应性的变化,及与特异体质等因素的关系。结果:班后FEV1的下降幅度在10周及1年时均较小,棉花抗原皮试阳性者稍大于阴性者。气道反应性在10周时增强,1年时仍保持在较高水平,皮试阳性者增强尤为显著。咳痰及胸部紧束感等症状随暴露时间延长逐渐增多,而干咳和鼻腔刺激症状等在1年时比10周有所减少。提示呼吸道炎症反应随棉尘暴露时间延长逐渐加重,棉花抗原皮试阳性者反应更重。お group of 110 workers in a cotton mill was investigated by questionnaire,skin testing,and the measurement of airway responsiveness through forced expiratory volume for one second(FEV 1)by spirometry.The workers were examined before starting work,10 weeks and one year after exposure.Decreases in FEV 1 over shifts were small at 10 weeks and one year,and were slightly higher among people with positive skin reactions to cotton dust extracts.Airway responsiveness,defined as the average decrease in FEV 1 after 1 25mg methacholin,was increased at 10 weeks.It remained about the same after one year,except in the workers with positive skin test.Subjective symptoms of chest tightness and cough with phlegm increased progressively at 10 weeks and one year.Nasal irritation remained unchanged and dry cough decreased in one year.The results suggest that the airway inflammation caused by cotton dust increases with the exposure time and that the changes are more notable in workers with reactivity to cotton dust extract.
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