جستجوی مقالات مرتبط با کلیدواژه « pulmonary function parameters » در نشریات گروه « پزشکی »

Wastewater treatment workers may be exposed to a wide range of chemical pollutants and biological contaminants such as bacteria and fungi. The aim of this study was to investigate the potential work-related respiratory disorders in workers of 10 wastewater treatment of petrochemical industries in Iran. This cross-sectional study was carried out on 198 employees of wastewater treatment plants and 99 non-exposed (referents) employees. American thoracic society (ATS) standard questionnaire was used for investigation of respiratory symptoms. Pulmonary function parameters were measured using a calibrated Vitalograph. The data were analyzed by SPSS version 16. The result of this study showed that odds ratio of cough, phlegm, productive cough, wheezing, and breathlessness in exposed group were 2.94, 1.10, 1.95, 0.82 and 1.97 times higher than reference subjects. Additionally mean values of most parameters of pulmonary function tests (PFT) were significantly lower in exposed individuals than in referent subjects (P<0.05). Significant increase in prevalence of respiratory symptoms and decrement in PFTs in wastewater treatment workers may be attributed to their exposure to bioaerosols.

Flour dust is one of the allergens in the workplaces and its occupational exposure can cause respiratory impairments. The purpose of this study was to investigate the respiratory effects of exposure to flour dust in flour mill workers. This cross-sectional study was carried out at 6 flour producing factories in Razavi and South Khorasan provinces، Iran. Study subjects included 180 males (90 male workers with current exposure to flour dust and 90 male non-exposed employees). Determination of dust concentration was carried out with personal dust sampler at all production units of studied industries. Respiratory symptoms were investigated with American Thoracic Society questionnaire (Persian version). Lung function tests were done by a calibrated spirometer. The data were analyzed using SPSS (version 16). Mean of age and work experience of exposed group was 36. 8±9. 03 and 12. 0±5. 6 years، respectively. This result، for non-exposed group was 37. 3±8. 1 and 12. 58±5. 5 years، respectively. Atmospheric concentrations of respirable and inhalable dust were 13. 3±2. 38 and 38. 77±3. 6 mg/m3، respectively. Results indicated that prevalence of respiratory symptoms in exposed subjects was significantly higher than non-exposed workers. Likewise، pulmonary function parameters were significantly lower in exposed than reference group (p<0. 05). The findings of this study showed that occupational exposure to flour dust and age could be important factors predicting the prevalence of respiratory symptoms and functional impairment of the lungs