Objective To study the efficacy of montelukast,a cysteinyl leukotriene receptor antagonist,in the treatment and prevention of exercise-induced bronchoconstriction(EIB) in mild asthmatic patients and patients with exercise-induced asthma(EIA).

• 目的 观察孟鲁司特钠治疗轻、中度支气管哮喘(简称哮喘)并发运动诱发支气管收缩(EIB)或运动性哮喘(EIA)的治疗及预防作用。