Hjortsberg U, Orbaek P, Aborelius M, Ranstam J, Welinder H
Department of Occupational Medicine, Malmö General Hospital, Sweden.
Am J Ind Med. 1988;14(6):643-7. doi: 10.1002/ajim.4700140603.
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.
在87名接触石棉的铁路维修车间工人中发现了被困气体量（VTG）增加，这些工人根据吸烟习惯被分为三个亚组。所有接受检查的受试者都有胸膜斑。测定VTG用于研究小气道功能。在接触石棉的吸烟者和非吸烟者中均发现VTG增加。两组的VTG:TLC比值均高于对照组。VTG增加是小气道功能障碍的一个迹象。在接触石棉的受试者中，这可能是由于对吸入的石棉纤维的早期支气管周围反应所致。
