The main factors that cause shoulder dystocia are fetal macrosomia, contracted pelvis and difficult vaginal operation.
巨大儿、骨盆狭窄和困难阴道助产术是其发生的主要因素。
There were no significant differences in the rates of critical contracted pelvis, prolonged latent phase and active phase between cesarean section and vaginal delivery in the occiput posterior position ( P> 0.05).
而剖宫产组和阴道分娩组骨盆临界狭窄、潜伏期及活跃期延长的发生率比较,差异无显著性意义(P>0.05)。
Between 1980 and 1982 there were 542 singleton breech presentation, of which 254 delivered by cesarean section ( 46.86%) Social factor was the first indication and contracted pelvis came the next.
本文回顾分析我院1980~1982年3年中542例单胎臀位的分娩情况,其中剖腹分娩占46.86%,以社会因素为适应证占38.98%,骨盆狭窄次之。
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