患儿,女,25天,第一胎,足月顺产,生后第18天因发热,咳嗽,拒奶在外院按“肺炎”治疗三天(用青霉素、氟美松等),病情无好转入我院。入院时体检:体温37.8℃,呼吸52次,面色苍白,口周发绀,全身浅表淋巴结不肿大,左腋下皮肤擦伤发红,右乳关附近可见米粒大脓疱一个,双肺呼吸音粗,心率140次,未闻杂音,肝大肋下1cm,脾未触及。实验室检查:红蛋白14.6g,白细胞20000,中性粒细胞70％,淋巴细胞30％,CRP阴性,血氧分析:低氧血症,血培养二次阴性。X线胸片:两肺布满大小不等点片状模糊融合团形阴影。入院诊断:新生儿肺炎、葡萄球菌败血症。入院后用新青霉素Ⅱ、先锋必抗感染,新鲜血, Children, women, 25 days, the first child, term full-term delivery, 18 days after birth due to fever, cough, refused to milk in the outer court according to “pneumonia” for three days (with penicillin, dexamethasone, etc.) Into our hospital. Physical examination on admission: body temperature 37.8 ℃, breathing 52 times, pale, perioral cyanosis, systemic superficial lymph nodes is not swollen, left axillary skin abrasions red, the right milk off the vicinity of the visible large pustules of rice, lungs breathing Tone tone, heart rate 140 times, unheard noise, liver 1cm ribs, spleen not touched. Laboratory tests: 14.6g of albumin, 20000 of white blood cells, 70% of neutrophils, 30% of lymphocytes, CRP negative, blood oxygen analysis: hypoxemia, blood culture twice negative. X-ray: two lungs covered with pieces ranging from the size of fuzzy fusion group shaped shadow. Admission diagnosis: neonatal pneumonia, staphylococcal sepsis. After admission with new penicillin Ⅱ, Pioneer must anti-infection, new blood,