Abstract: Objective To investigate the reasonable delivery way during different periods (37-41⁺⁶ weeks) of uterogestation accompanying with oligohydramnios. Methods From January 2010 to June 2013, 142 full-term gravidas were selected as research objects, which were diagnosed as oligohydramnios (5+6 weeks), the interim group (39-40⁺⁶ weeks) and the advanced group (41-41^{+6,/sup> weeks), were divided. Full-term gravidas with normal amniotic fluid diagnosed by hameochronous ultrasonography and without other high risk factors were randomly selected as control group. The success rate of vaginal delivery, fetal distress, emergency caesarean section rate and asphyxia neonatorum were observed respectively. Results (1) The success rate of vaginal delivery showed a significant tendency of interim group>advanced group>early group, but the significance between the research group and control group was not obvious. (2) Compared with the control group, the failure rate of odinopoeia showed a tendency of early group>interim group=advanced group, in which the significance between the early group and control group was not obvious, while the opposite was true among the interim group, advanced group and control group. (3) The emergency caesarean section rate showed a significant tendency of advanced group>early group>interim group, but the significance was not obvious between the three research groups and control group. (4) The significance of non-stress test adiaphoria was not obvious between the research groups and control group. (5) The significance of mild asphyxia neonatorum between the early group and control group was not obvious, while the opposite was true among the interim group, advanced group and control group. Conclusions Oligohydramnios occurred among the interim and advanced cases. By this time, low doses of misoprostol could be used to promote the cervical ripening and labor induction in case the fetus possesses a fine fetal heart. However, the vaginal delivery indication should be well controlled, and during the whole delivery process, the fetus’s condition must be closely monitored in order to provide appropriate measures. During the early period, vaginal delivery should be carefully adopted if the oligohydramnios occurs. Fluid infusion could be used only when the fetus possesses a fine fetal heart. On the contrary, if the fetal distress occurs, the indications for cesarean section should be relaxed.}

Key words: full-term pregnancy, oligohydramnios, induction time