Objective To study the clinical effect of cervical dilatation balloon and oxytocin in the treatment of late pregnancy induced labor .Methods Chose 2014.05—2015.05 period in the department of gynecology and obstetrics in our hospital receiving treatment of 126 cases of pregnancy pregnant women , divided by randomized double blind method and the control group of 63 cases of pregnant women treated with oxytocin;research group of 63 cases of pregnant women with uterine neck extension balls were combined with oxytocin , observed and compared two groups of induction effect .Results The score of Bishop in the study group was significantly higher than that in the control group after 12 hours of labor , the difference was statistically significant P<0.05.The total effective rate of the study group of pregnant women was 98.42% (62/63) was significantly higher than that of the control group (50/63), the difference was statistically significant between P=0.001. Conclusions The cervical dilatation balloon and oxytocin can promote cervical ripening , and it is a simple , effective and safe method for inducing labor , which can be further popularized and applied in clinic .%目的：研究分析子宫颈扩张球囊与催产素联合用于妊娠晚期引产的效果。方法选择2014年5月至2015年5月期间在我院产科接收诊治的126例妊娠晚期孕妇，利用随机数字双盲法进行平均分组，对照组63例孕妇单纯应用催产素；研究组63例孕妇应用子宫颈扩张球囊联合催产素，观察对比两组的引产效果。结果研究组孕妇在引产12小时后的Bishop评分显著高于对照组，差异P＝0．0001有统计学意义。研究组孕妇引产的总有效率约为98．42％（62／63）显著高于对照组的79．37％（50／63），差异P＝0．001有统计学意义。结论子宫颈扩张球囊联合催产素的促宫颈成熟效果较好，是一种安全、有效、简单的引产方法，可进一步在临床中推广、应用。
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