妊娠36周始纠正枕后位研究

目的:预防枕后位,减少头位难产。方法:选择2004年10月～2007年10月在产前检查、妊娠36周始至动产、经彩超及产科检查确诊为枕后位、年龄21～35岁的初产妇200名随机分为两组,观察组采取侧俯卧位与胸膝卧位结合纠正枕后位,对照组采取自由体位。结果:至动产时观察组89例转为枕前位,5例转为枕横位,6例枕后位,枕后位发生率6%;对照组29例转为枕前位,25例枕横位,46例枕后位,枕后位发生率46%,差异有统计学意义(P<0.01)。结论:妊娠36周始纠正枕后位,可减少枕后位,预防头位难产。

Study on Occipitoposterior position corrected at 36 gestational weeks

Objective:To prevent occipitoposterior position and reduce cephalic presentation dystocia.Methods:200 primiparous women aged 21-35 years old at 36 gestational weeks who received prenatal examination and were diagnosed as occipitoposterior position by color Doppler ultrasound and obstetric check in the hospital from October 2004 to October 2007 were selected and divided into two groups randomly:the primiparous women in observation group were treated with contralateral prone position combined with chest-knee position to correct occipitoposterior position,the primiparous women in control group adopted free postures.Results:In observation group,89 primiparous women converted into occipitoanterior position,5 primiparous women converted into occipitotransverse position,6 primiparous women continued occipitoposterior position,the incidence of occipitoposterior position was 6%;in control group,29 primiparous women converted into occipitoanterior position,25 primiparous women converted into occipitotransverse position,46 primiparous women continued occipitoposterior position,the incidence of occipitoposterior position was 46%,there was significant difference(P<0.01).Conclusion:Correcting occipitoposterior position at 36 gestational weeks can reduce occipitoposterior position and prevent cephalic presentation dystocia.