女,4岁。因咳嗽3天,气急2天于1990年11月30日入院,患儿3天前在无明显诱因下出现刺激性咳嗽,有少许薄白痰,无咯血。发病第2天咳嗽加剧、气急,无紫绀及端坐呼吸,无发热、盗汗。否认有结核病接触史。体检:T 37.3℃,P 120次/分,R 34 Female, 4 years old. 3 days due to cough, shortness of breath 2 days in November 30, 1990 admission, children with irritating cough, no obvious incentive 3 days ago, a little thin white sputum, no hemoptysis. Day 2 onset of cough, agile, cyanosis and sitting without breathing, no fever, night sweats. Denied the history of exposure to TB. Physical examination: T 37.3 ℃, P 120 beats / min, R 34