例1.男,出生2d。气促、口吐白沫伴面部紫绀、腹胀1d余,于2005年7月4日入院。妊娠31+周男婴,P1G1,顺产娩出,出生时体重1.45kg,Apgar评分10分,出生后3～4h后出现气促、口吐白沫伴面部紫绀,检查发现腹部膨隆,并逐渐加重,期间曾排出少量褐色大便1次,未进行母乳及人工喂养,给予补液 Example 1. Male, born 2d. Shortness of breath, mouth foaming with facial cyanosis, abdominal distension 1d, on July 4, 2005 admitted. Pregnancy 31+ weeks of baby boy, P1G1, delivered by natural delivery, birth weight 1.45kg, Apgar score 10 points, 3 to 4h after birth, shortness of breath, foaming at the mouth with facial cyanosis, examination revealed bulging belly and gradually increased, During the discharge of a small amount of brown stool once, not breast-feeding and artificial feeding, given rehydration