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目的探讨孕晚期不成熟宫颈引产的最佳方法。方法将宫颈Ｂｉｓｈｏｐ评分≤４分的初产妇，随机分为三组，分别给予水囊、米索前列醇和催产素，进行孕晚期不成熟宫颈引产的对照观察。结果水囊组有效率９３．４％，成功率８２％，均明显高于米索组（Ｐ＜０．０５）和催产素组（Ｐ＜０．０１）；其剖宫产率明显低于米索组和催产素组，差异具有高度显著性（Ｐ＜０．０１）。结论水囊法明显优于米索前列醇和催产素法，并可降低剖宫产率，减少胎儿宫内窘迫。此法简单、安全、价格低廉、副作用少。
Objective To explore the best method of immature cervix induction of labor during the third trimester of pregnancy. Methods The primiparous women with cervical Bishop score≤4 were randomly divided into three groups, and were given water bag, misoprostol and oxytocin respectively to observe the immature cervical induced labor during the third trimester of pregnancy. Results The effective rate of hydrocephalus group was 93.4%, the success rate was 82%, which was significantly higher than that of misoprostol group and oxytocin group (P <0.01). The cesarean section rate was significantly lower Misoprostol group and oxytocin group, the difference was highly significant (P <0.01). Conclusion The water sac method is superior to misoprostol and oxytocin method, and can reduce the rate of cesarean section and reduce fetal distress. This method is simple, safe, inexpensive, less side effects.