The rates of fetal intrauterine distress, cesarean section and the incidence of deficiency in amniotic fluid were obviously higher in cases of UCAN than in those cases without UCAN (P<0.01).

脐带绕颈组胎儿宫内窘迫率、胎儿剖宫产率及羊水过少的发生率明显高于无脐带绕颈组（P<0·01）。

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Results The incidence rates of oligoamnios and amniotic fluid muddy 40 weeks after pregnacy were significantly highter than that of 40 weeks before pregnancy (P<0.001, P<0.05).

结果妊娠40周后羊水过少发生率及羊水污染发生率较妊娠40周前明显增高（P< 0 0 0 1，P< 0 0 5 ） ，分娩方式及新生儿预后差异无显著性（P >0 0 5 ）。

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Results There were significant differences in amniotic fluid index(AFI), amniotic fluid muddy(AFM) and cavity fetal distress(CFD) between the two groups (P<0.05 or P<0.01).

结果两组间羊水指数（AFI） ，羊水混浊度（ AFM）与胎儿宫内窘迫（C FD）发生存在显著性差异（P<0 。0 5或P。

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