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国外学者Salem提出支气管收缩可刺激引起咳嗽反射的受体而出现咳嗽,投用扩张支气管的药物可松弛支气管的收缩痉挛,改善咳嗽。美喘清是一种强效的β_2受体激动剂,它能有效地扩张支气管。急性
Foreign scholars Salem proposed bronchoconstriction can stimulate the receptors that cause cough reflex cough, dilation bronchial drugs can relax the contraction of the bronchial spasm, improve cough. MeiChuanQing is a potent β_2 receptor agonist, which can effectively expand the bronchus. acute