支气管哮喘(简称“哮喘”)是呼吸道慢性变应性炎症性疾患,其发生率及患病率不断上升。由于气道高反应性的增加和接触过敏原,患者反复出现发作性喘息、胸闷、咳嗽和夜间憋醒,严重影响患者的生活质量和工作,增加医疗费用。重度或危重哮喘发作救治不当还可引起哮喘死亡。全球哮喘? Bronchial asthma (referred to as “asthma”) is a chronic allergic inflammatory disease of the respiratory tract, and its incidence and prevalence are on the rise. Patients with recurrent episodes of wheezing, chest tightness, coughing and nighttime arousal have serious effects on the quality of life and work of patients due to increased airway hyperresponsiveness and exposure to allergens, resulting in increased medical costs. Severe or critically ill asthma attack can also cause asthma deaths. Global asthma?