Objective This multi-centered clinical trial was designed toassess the effica cy and safety of domestic intravenous Turbutalin Sulfate in the treatment of ast hma and chronic asthmatic bronchitis.

• 目的对国产硫酸特布他林注射液治疗支气管哮喘和慢性喘息型支气管炎的有效性与安全性进行评价。