作者认为最大呼气曲线的有效时间(或等量通过时间)是检查气道阻塞的敏感测定指标,用力呼气的局部有效时间可提高对正常人和慢性气道阻塞病人的鉴别能力。因此,作者对80名年龄20—69岁正常非吸烟者和30名年龄30—58岁慢性支气管炎患者进行了呼气曲线的局部有效肘间的测定。80名正常非吸烟者(男45名、女35名年龄20—89岁,无肺、心、胸膜疾病史,查体和胸部 X 线检查均无异常发现,FVC、FEV_1、和 The authors believe that the expiration time of the maximal expiratory curve (or equivalent passage time) is a sensitive measure of airway obstruction, and the forced expiratory local effective time may improve the ability of patients with normal and chronic airway obstruction. Therefore, the authors performed a locally valid elbow measurement of the expiratory curve of 80 normal non-smokers aged 20-69 years and 30 chronic bronchitis patients aged 30-58 years. 80 normal non-smokers (45 men and 35 women aged 20-89 years, no history of lung, heart and pleural disease, physical examination and chest X-ray examination were no abnormal findings, FVC, FEV 1, and