患儿，女，1岁，因咳嗽3天，发热2天人院。咳嗽为单声咳，无痰。体温38℃～39℃，同时患儿面色较差，呼吸困难。体检：体温38℃，呼吸75次／min，发育可，营养欠佳，面色及精神较差，口唇周发绀，全身浅表淋巴结不肿大。气管右移，左侧胸廓饱满，语额减弱，叩诊呈浊音，听诊左 Children, women, 1 year old, had a cough for 3 days and fever 2 days in the hospital. The cough is a monotonous cough and no cough. Body temperature 38 °C ~ 39 °C, while children with poor looking, breathing difficulties. Physical examination: body temperature 38 °C, breathing 75 times / min, development can be, poor nutrition, poor face and spirit, facial cyanosis, generalized superficial lymph nodes are not swollen. The trachea moves to the right, the left side of the thorax is full, the amount of speech is weakened, and the percussion is dull, auscultating left