// +author:m aborelius +author:aborelius 
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{userid:"ranstam", "articletype":"article","pages":"643-647","author":"U Hjortsberg, P Orbaek, M Aborelius, J Ranstam, H Welinder","year":"1988","title":"Railroad workers with pleural plaques: II. Small airway dysfunction among asbestos-exposed workers.","month":"","journal":"Am J Ind Med","publisher":"","volume":"14","number":"6","note":"","tags":"Adult,Aged,Asbestosis,Bronchi,Functional Residual Capacity,Humans,Lung Diseases,Lung Volume Measurements,Male,Middle Aged,Nitrogen,Pleural Diseases,Railroads,Smoking","booktitle":"","editor":"","abstract":"Increased volume of trapped gas (VTG) was found in 87 asbestos-exposed railroad repair shop workers, divided into three subgroups according to smoking habits. All the examined subjects had pleural plaques. Determination of VTG was used to study function of small airways. Increased VTG was found among asbestos-exposed smokers as well as nonsmokers. In both groups the VTG:TLC ratio was elevated compared with controls. Increased VTG is a sign of small airways dysfunction. In asbestos-exposed subjects, it might be caused by an early peribronchial reaction to inhaled asbestos fibers.","address":"","school":"","issn":"0271-3586","doi":"","pubmed":"3232684","key":"Hjortsberg1988","howpublished":"","urllink":"","refid":130}
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{userid:"ranstam", "articletype":"article","pages":"635-641","author":"U Hjortsberg, P Orbaek, M Aborelius, J Ranstam, H Welinder","year":"1988","title":"Railroad workers with pleural plaques: I. Spirometric and nitrogen washout investigation on smoking and nonsmoking asbestos-exposed workers.","month":"","journal":"Am J Ind Med","publisher":"","volume":"14","number":"6","note":"","tags":"Adult,Aged,Asbestosis,Forced Expiratory Volume,Functional Residual Capacity,Humans,Lung Diseases,Lung Volume Measurements,Male,Middle Aged,Nitrogen,Pleural Diseases,Railroads,Smoking,Spirometry","booktitle":"","editor":"","abstract":"Eighty-seven workers exposed to asbestos in a railroad car repair shop, with characteristic asbestos-induced pleural plaques, underwent extensive lung-function examination. Vital capacity (VC) showed the greatest reduction among the static lung volumes, with an asymmetrical distribution of one-fourth of the subjects below 80% of the predicted value. Logistic regression demonstrated VC to be sufficient for optimal discrimination of asbestos-exposed subjects from a group of matched controls. No further discriminatory power was gained by additional spirometric measures, lung mechanics, blood gas analysis, or diffusing capacity. Smoking had an influence on dynamic but not on static lung volumes. In conclusion, reduced static lung volumes among smoking asbestos-exposed workers with pleural plaques should, in the absence of other lung diseases, be mainly attributed to the asbestos exposure.","address":"","school":"","issn":"0271-3586","doi":"","pubmed":"3232683","key":"Hjortsberg1988","howpublished":"","urllink":"","refid":131}
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