支气管哮喘(简称哮喘)急性发作是指喘息、气促、咳嗽、胸闷等症状突然发生,或原有症状急剧加重,常因接触变应原、刺激物或呼吸道感染诱发。其程度轻重不一,病情加重,可在数小时或数天内出现,有些可在数分钟内危及生命。急性发作是哮喘控制不良的结果,也是哮喘管理和治疗失败的 Bronchial asthma (referred to as asthma) is an episode of wheezing, shortness of breath, cough, chest tightness and other symptoms suddenly occur, or a sharp increase in the original symptoms, often due to exposure to allergens, irritants or respiratory tract infection induced. Their severity varies from illness to illness, which can occur within hours or days and some can endanger life in minutes. Acute exacerbation is the result of poorly controlled asthma and asthma management and treatment failure