Uterine hypocontractility should be augmented after both the maternal pelvis and fetal presentation have been assessed.

在对母体骨盆和胎儿先露都进行评估后，低张性子宫收缩应加以强化。

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Conclusions When the pelvis was normal, fetal macrosomia, abnormal fetal position and abnormal uterine were main causes leading to abnormal second stage of labor.

结论在骨盆正常情况下，新生儿过大、胎方位异常及产力异常是造成第二产程异常的主要原因。

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Occiput anterior is usually the easiest position for the fetal head to traverse the maternal pelvis.

枕前通常是胎儿最易通过产妇骨盆的胎位。

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