我们肺功能室在近期使用日本产全自动肺功能仅检测了81例吸烟者和44例不吸烟者的小气道功能。对小气道改变的机理做了初步探讨. 吸烟使呼吸系统直接受损,小气道又首当其冲。小气道即直径≤2mm的支气管。小气道管腔纤细,管壁菲薄,纤毛上皮细胞减少或消失,软骨组织缺如,平滑肌相对增多.这些解剖生理特点,使得烟草烟雾中的气态成 In our recent use of Japanese-made fully automatic lung function in our lung function room, we examined only the small airway function in 81 smokers and 44 non-smokers. The mechanism of small airway changes was preliminarily discussed.Cancer smoking directly damaged the respiratory system, and small airways were the first to bear the brunt. Small airways that diameter ≤ 2mm bronchus. Small airway lumen slender, thin tube wall, ciliated epithelial cells decreased or disappeared, lack of cartilage tissue, smooth muscle relative increase in these anatomical and physiological characteristics, making the tobacco smoke in the gas into