患儿女,3个月,咳喘7天、2天加重,发憋,纳差,非喷射性呕吐3—4次,无发热,收入院。患儿为第1胎,足月顺产,生后第1次患病,人工喂养,由其父母和祖父照顾。接种卡介苗史不详,否认结核病接触史。发育营养中等,体温36.3℃,神清,全身浅淋巴结不大。咽充血,口周轻度发绀,有鼻搧和三凹征。左肺上部呼吸音低,未闻罗音,心音 Children, 3 months, cough and asthma 7 days, 2 days aggravated, hair hold, anorexia, non-jet vomiting 3-4 times, no fever, income hospital. Children with first birth, full-term pregnancy, sickness after birth, artificial feeding, care by their parents and grandfathers. BCG vaccination history unknown, denied a history of exposure to tuberculosis. Development of moderate nutrition, body temperature 36.3 ℃, Shen Qing, systemic superficial lymph nodes is not. Pharyngeal congestion, mild cyanosis of the mouth, nose fan and three concave sign. Upper left lung sounds low, did not hear rales, heart sounds