Evaluation of respiratory system in textile-dyeing workers

Authors

  • Amir Houshang Mehrparvar Department of Occupational Medicine, Industrial Diseases Research Center, ShahidSadoughi University of Medical Sciences, Yazd, Iran.
  • Masoud Rahimian Internal medicine Department, Division of Pulmonary and Critical Care Medicine , ShahidSadoughi University of Medical Sciences, Yazd, Iran.
  • Mojahede Salmani Nodoushan Department of Occupational Medicine, Industrial Diseases Research Center, ShahidSadoughi University of Medical Sciences, Yazd, Iran.
  • Ziba Loukzadeh Department of Occupational Medicine, Industrial Diseases Research Center, ShahidSadoughi University of Medical Sciences, Yazd, Iran.
Abstract:

  Background :Despite the presence of many textile and dyeing plants in Iran, we couldn’t find similar studies in this country. Forthermore, considering progress in the dyeing process and engineering controls, assessment of respiratory system is important for these workers. The present study was performed to evaluate the respiratory system in dyeing workers.   Methods : In a cross-sectional study, 101 dyeing workers (all dyeing workers in yazd) and 90 workers without respiratory exposures (control group), were evaluated. A questionnaire was filled for each participant included Venables questionnaire and some other questions about age, work experience, personal or familial history of asthma or atopy, acute and chronic respiratory symptoms Then spirometry was performed before and after the shift work   Results : The frequency of acute and chronic respiratory symptoms was significantly higher among dyeing workers than controls. According to the Venables questionnaire, 11.9% of the dyeing workers suffered from asthma. Means of FVC and FEV1 of pre-shift spirometry were lower than control (p<0.001). Across-shift spirometry showed significant reduction of FVC (p<0.001), FEV1 (p<0.001), FEF25-75% (p=0.05) and FEF25% (p=0.007) in dyeing workers compared to the control group.   Conclusion : Evaluation of dyeing workers’ respiratory system in this study showed that despite development in dyeing processes and engineering controls, workers in this job show more prevalent acute and chronic symptoms, and across-shift changes in spirometric parameters were significantly higher in this work group than the control group. Therefore it is necessary to pay attention to the control of respiratory exposures in this job.   

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Journal title

volume 28  issue 1

pages  569- 576

publication date 2014-01

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