患儿男性,2个月。因呕吐1周,腹胀4d主诉入院。患儿生后大便一直呈蛋花样,量少,日约10次,入院前1周无明显诱因出现呕吐,呕吐物为所进母乳,无胆汁,非喷射状,日约5～6次。4d来加重,伴明显腹胀,阵发性哭闹,无排便、少尿、无发热、咳嗽、抽风等症。入院前曾给开塞露,排稀便2次,量少,禁食后呕吐减轻,腹胀不消。体格检查:T37.0℃,P120次/min,R30次/min,精神差,无脱水貌。心肺无异常,腹部膨隆,腹壁静脉扩张,未见肠胃蠕动波,叩呈鼓音,腹水征(-),腹部压痛,腹 Children with children, 2 months. 1 week due to vomiting, abdominal distension 4d chief admission. Children with stool after birth has been egg-shaped, less, about 10 times a day, 1 week before admission no obvious incentive to vomit, vomit into the breast milk, no bile, non-jet-like, about 5 to 6 times a day. 4d to aggravate, with significant bloating, paroxysmal crying, no defecation, oliguria, no fever, cough, convulsions and other symptoms. Before admission to the open Cypriot exposed row of loose stool 2 times, less, reduce vomiting after fasting, abdominal distension. Physical examination: T37.0 ℃, P120 times / min, R30 times / min, poor spirit, no dehydration appearance. No abnormal heart and lung, abdominal bulging, abdominal veins dilated, no gastrointestinal motility wave, knocking drum sounds, signs of ascites (-), abdominal tenderness, abdominal