孕妇36岁,平素健康,月经周期规律,本次妊娠早期无感染及药物接触史。2009-09-15孕30周时来我院进行产前常规检查,超声检查显示:腹部切面腹腔内见大量液性暗区,前后径最深处约4.1cm,,肠管漂浮其中;余各器官未发现明显异常,羊水指数:26.1cm。超声提示:宫内妊娠,单活胎,头位,胎盘Ⅰ级,胎儿大小约31周;胎儿腹水;羊水过多;建议复查。2d后(9月17日)再次超声复诊:胎儿腹 Pregnant women 36 years old, usually healthy, regular menstrual cycle, the first trimester of pregnancy without infection and drug exposure history. 2009-09-15 30 weeks pregnant to our hospital for routine prenatal examination, ultrasound examination showed: Abdominal section of the abdomen to see a large number of liquid dark area, the depth of the anteroposterior diameter of about 4.1cm, which bowel floating which; Found significant abnormalities, amniotic fluid index: 26.1cm. Ultrasonic tips: intrauterine pregnancy, single live births, head position, placenta Ⅰ level, the fetus size of about 31 weeks; fetal ascites; polyhydramnios; recommended review. After 2d (September 17) again ultrasound referral: fetal abdomen