Abstract: Objective：To investigate the induced abortion effects of application of dinoprostone or cervical dilatation double-balloon in borderline oligohydramnios full-term pregnancy. Methods：Ninety full-term pregnant women (50 mm＜AFI≤80 mm, cervical Bishop score≤4) who delivered in Henan Provincial People′s Hospital were selected as the observation objects. 45 patients of observation group were treated with dinoprostone vaginally, the other 45 patients were treated with cervical dilatation double-balloon vaginally. Then the cervical ripening effects and the materal and fetal outcomes of the two groups were compared. Results：The difference of time of induced labor to vaginal delivery was statistically significant in dinoprostone group and double-balloon group (t=3.204, P=0.003), the vaginal delivery rate within 24 h and the way of delivery in both groups had no obvious difference (P＞0.05). The rate of oxytocin infusion in dinoprostone group was statistically significant less than that of double-balloon group (46.7% vs. 68.9%, χ2=4.555, P=0.033). But dinoprostone group had more complications (fever, severe vomiting or diarrhea, excessive uterine activity, abnormal fetal heart, meconium-staining amniotic fluid), but the differences were not statistically significant. Conclusions：There is no statistically significant difference in the induced abortion effect between dinoprostone and cervical dilatation double-balloon.

Key words: Oligohydramnios, Labor, induced, Dinoprostone, Double-balloon