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  • Title: [Follow-up study of changes in respiratory function in the same workers after an additional 6 years of exposure to pollutants in the rubber industry].
    Author: Zuskin E, Mustajbegović J, Kern J, Sonicki Z, Doko-Jelinić J.
    Journal: Lijec Vjesn; 1994; 116(11-12):287-90. PubMed ID: 7715407.
    Abstract:
    Follow-up study of respiratory function was carried out in a group of 311 male workers employed in one rubber industry. The prevalence of respiratory symptoms and ventilatory capacity were recorded over te period of six years. Lung function was measured by recording maximum expiratory flow-volume (MEFV) curves on which forced vital capacity (FVC), one-second forced expiratory volume (FEVI) and flow rates at 50% and the last 25% of the vital capacity (FEF50, FEF25) were read. The prevalence of all chronic respiratory symptoms was higher during the follow-up study although not statistically significant (p > 0.05). During both studies smokers had significantly higher prevalence of chronic cough, chronic phlegm and chronic bronchitis than nonsmokers (p < 0.05 or < 0.025). Measured values of ventilatory capacity were significantly lower than predicted normal values during both studies (p < 0.01). Percentage of predicted values were lower during the follow-up study in comparison to that during the initial study. The mean lowest percentages were obtained for FEF25 (initial study: 77.4%; follow-up study: 70.5%). Smokers had larger mean annual decrease of FVC: 0.073 L; FEVI: 0.063 L; FEF50: 0.100 L/s; FEF25: 0.085 L/s than nonsmokers (FVC: 0.063 L; FEVI: 0.058 L; FEF50: 0.083 L/s; FEF25: 0.058 L/s). Workers exposed for more than 10 years had larger mean annual decrease of ventilatory capacity tests than hose with shorter exposure. Our data indicate that exposure to noxious agents in rubber industry may be responsible for the development of chronic respiratory symptoms and chronic lung function changes.
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