支气管哮喘患者36例,男26例,女10例,年龄22～56岁,平均37岁。均符合1992年全国第一次哮喘病会议支气管哮喘诊断标准。超声雾化吸入维生素 K_3治疗前24～48小时,患者停用支气管扩张剂和糖皮质激素等药物,并测试(用日本产 Chest-65型肺功能仪)治疗前的基础肺功能:患者流速容量曲线(FV 曲线)。选择其中反映气道阻塞程度的敏感指标:用力肺活量 36 cases of bronchial asthma patients, 26 males and 10 females, aged 22 to 56 years, mean 37 years. Are in line with the 1992 national first asthma meeting bronchial asthma diagnostic criteria. Ultrasonic nebulization of vitamin K_3 24 to 48 hours prior to treatment, patients discontinued bronchodilators and glucocorticoid and other drugs, and test (with Japan-made Chest-65-type lung function meter) before treatment of basic pulmonary function: the patient’s flow capacity Curve (FV curve). Select one of the sensitive indicators that reflect the degree of airway obstruction: forced vital capacity