1病例摘要患儿，男，年龄4天。生后半天出现呕吐，呕吐物最初为咖啡色样，量多，后为淡黄色液体，有胎便，量较少。体检：一般情况尚可，神志清，轻度脱水貌，心尖搏动在右IV肋间，心脏听诊无殊，肝左肋缘下2cm，右助下叩诊鼓音，腹平软无压痛，未及包块。胸腹立位平片检查示， 1 case summary Children, male, age 4 days. Vomiting half a day after birth, vomit was originally a brown sample, the amount of more, after a light yellow liquid, there is a small amount of meconium. Physical examination: the general situation is acceptable, clear consciousness, mild dehydration appearance, apical beating in the right IV intercostal heart auscultation without special liver left margin of the ribs 2cm right aid percussion Drum sound abdominal tenderness without tenderness, Mass. Thoracoabdominal vertical plain film examination showed,