支气管哮喘往往与其它疾病并存,许多药物又可诱发或加重支气管哮喘。因此,在并发支气管哮喘的一些疾病治疗的药物选用上应特别慎重,否则可导致严重后果。1 β-受体阻滞剂当支气管平滑肌上β_2—受体兴奋时,使支气管扩张,而服用β—受体阻滞剂后能阻断支气管平滑肌的β—受体,使呼吸道阻力增高,β_2活动也受到阻断, Bronchial asthma often co-exist with other diseases, many drugs can induce or aggravate bronchial asthma. Therefore, in the treatment of some diseases complicated by bronchial asthma drugs should be particularly careful, otherwise it can lead to serious consequences. 1 β-blocker Bronchoconstriction occurs when the β_2-receptor on bronchial smooth muscle is excited, whereas β-blocker blocks the β-receptor of bronchial smooth muscle and increases airway resistance. Β_2 Activities are also blocked,