为了明确妊娠并发早期羊水过多时胎儿核型检查的必要性并说明诊断早期羊水过多后的自然发展过程,对1985年1月～1989年1月华盛顿医学中心大学的超声检查记录作了回顾性分析。138例被认为是孕26周前发生的羊水过多,资料完整供进行分析的是131例。21例重度羊水过多中18例有先天性畸型(86％),系3例中的2例为双胎输血综合征;18例中度羊水过多中有13例(72%)合并异常, In order to clarify the necessity of fetal karyotyping in pregnancy with congenital polyhydramnios and to explain the natural progression of the diagnosis of early amniotic fluid, a retrospective review of the ultrasonographic records of the Washington Medical Center University from January 1985 to January 1989 analysis. 138 cases were considered to be too much amniotic fluid 26 weeks before pregnancy, the data is complete for analysis of 131 cases. Of the 21 cases with severe polyhydramnios, 18 had congenital malformations (86%), 2 of 3 cases were twin twin transfusion syndromes; 13 (72%) of 18 moderate polyhydramnios had abnormalities,