许多医生认为支气管哮喘患者的第一秒呼气量与肺活量的比值若超过70％以上,可除外明显的气道阻塞和其他肺功能的异常。但本文资料证实这种看法是错误的,有些患者可有肺过度充气及动脉低血氧和低碳酸血症。作者对35例有临床哮喘史、发作性呼吸困难、哮鸣音、血或/和痰有嗜酸性白细胞增多的支气管哮喘患者进行肺功能测验,包括:第一秒呼气量、肺活量、第一秒呼气量与肺活量的比值、肺总量、功能残气、残气、残气与肺总量的比值、一氧化碳弥散量、动脉 Many doctors think that if the ratio of first-second expiratory volume to vital capacity in patients with bronchial asthma exceeds 70%, significant airway obstruction and other abnormalities in lung function may be excluded. However, the data in this paper confirm this view is wrong, some patients may have lung hyperinflation and arterial hypoxemia and hypocapnia. The authors performed lung function tests on 35 patients with bronchial asthma who had a history of asthma, episodic dyspnea, wheeze, blood, and / or sputum with eosinophilia including first-second expiratory volume, vital capacity, first The ratio of expiratory volume to vital capacity, total lung capacity, functional residual capacity, residual capacity, ratio of residual capacity to total lung capacity, carbon monoxide dispersion, arterial