哮喘是支气管哮喘的简称,与喘息型气管炎、肺气肿均属于慢性肺部阻塞性疾患。临床诊断时,有时似乎难予鉴别。其主要特征是反复发作性的呼吸困难。由于支气管痉挛所致,导致两肺陷闭气体的增加,即残气量增加,肺活量减少。它归纳于变态反应性疾病,病因复杂。目前较公 Asthma is short for bronchial asthma, and asthmatic bronchitis, emphysema are chronic obstructive pulmonary disease. Clinical diagnosis sometimes seems difficult to identify. Its main feature is recurrent episodes of dyspnea. As a result of bronchospasm, resulting in increased lung trapped gas, that is, increased residual capacity, decreased vital capacity. It is summarized in allergic diseases, the etiology is complicated. Currently more public