矽肺病是以肺间质纤维化改变为主的慢性疾病。由于病情进展缓慢,病程长,早中期可不表现明显症状,一般肺功能检查也往往难以发现异常。最大呼气流速—容量曲线(MEFV)目前被认为是检测小气道功能较 Silicosis is a chronic disease mainly caused by pulmonary interstitial fibrosis. Due to the slow progression of the disease, longer duration, early and mid-term may not show obvious symptoms, the general pulmonary function tests are often difficult to find abnormalities. The maximum expiratory flow-volume curve (MEFV) is currently considered to be a test of small airway function than