患儿:男,15天,第2胎、胎龄34周早产、人工喂养。周前曾患肺炎,院外肌注青霉素5天好转。近2天又出现腹泻、7～8次/日,为黄绿色粘液便。入院体检、体温不升,体重2480g,发育营养差,反应低下,面色发灰。前囟凹陷。皮肤巩膜轻度黄染。双肺呼吸音粗糙、心(-)、腹略胀、肝肋下2cm。拥抱反射稍弱。白细胞23,600,中性粒细胞76％,C反应蛋白>30ug/L,血沉20mm/小时,大便常规白细胞++,大便培养(-),血培养及尿培养均为费劳地枸橼酸杆菌生长、药敏试验丁胺卡那霉素、庆大霉素、新霉素敏感。经静点磺 Children: male, 15 days, second child, gestational age 34 weeks premature delivery, artificial feeding. Have had pneumonia a week ago, hospitalized penicillin 5 days improved muscle. Diarrhea in the past 2 days, 7 to 8 times / day, yellow-green mucus. Admission medical examination, body temperature does not rise, weight 2480g, poor nutrition, poor response, looking gray. Anterior fontanel depression. Skin scleral mild yellow dye. Breathing lung sounds rough, heart (-), abdominal swelling, liver ribs 2cm. Hugging reflection weaker. White blood cells 23,600, neutrophils 76%, C reactive protein> 30ug / L, erythrocyte sedimentation rate 20mm / h, stool routine white blood cells ++, stool culture (-), blood culture and urine culture are Fusarium citronella growth , Susceptibility test amikacin, gentamicin, neomycin sensitive. After the static point of the sulf