婴幼儿哮喘约占小儿喘息性疾病的18％左右,是不容忽视的小儿常见疾病。 婴幼儿哮喘多见于2岁以下小儿,男多于女。大约2/3病例有家族性哮喘或其他变应性疾病史(如过敏性鼻炎、湿疹、支气管哮喘等)。发病前患儿常有先导性病变,如难治性湿疹、腹泻、咳嗽等;后者逐渐转为反复发作的喘息性支气管炎,而后出现婴幼儿哮喘的临床特点。一旦婴幼儿哮喘发作,患者常缺氧严重,呈现明显紫绀,喘息性呼吸困难逐渐加重,严重时出现喘憋状态。 婴幼儿哮喘的诱因多为呼吸道感染,因此 Infant infant asthma accounts for about 18% of wheezing, is a common disease in children can not be ignored. Infant and young child more common in children under 2 years of age, more men than women. About two-thirds of cases have a history of familial asthma or other allergic diseases (such as allergic rhinitis, eczema, bronchial asthma, etc.). Pre-onset children often have prevalent lesions, such as refractory eczema, diarrhea, cough, etc .; the latter gradually recurrent asthmatic bronchitis, and then the clinical features of infant asthma. Once infantile asthma attacks, patients often hypoxia, showing obvious cyanosis, wheezing breathing difficulties gradually increased, severe wheezing state. Infant asthma incentives are mostly respiratory infections, therefore