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凡胎儿娩出后半小时,胎盘尚未娩出者称胎盘滞留,胎盘滞留是产后大出血的主要原因之一。如何正确、及时地行人工剥离胎盘是预防和减少产后大出血的重要环节。人工剥离胎盘的正确方法是,术者一手在腹部紧握子宫底固定子宫体,一手五指并拢成圆锥形沿脐带伸入子宫腔,探到胎盘边缘,四指并排伸直掌背向宫壁,以手掌尺侧缘如裁纸状慢慢钝性分离胎盘,待整个胎盘剥离后取出。有时,胎盘全部剥离但滞留宫腔或胎盘嵌顿于宫颈内口,只需轻压子宫底沿产道轴方向牵拉脐带即可娩出胎盘。以下是几种特殊情况的处理。
Where the fetus is delivered half an hour later, the placenta has not yet been delivered placenta accreta, placenta accreta is one of the main causes of postpartum hemorrhage. How to correctly and promptly remove the placenta manually is an important part of prevention and reduction of postpartum hemorrhage. Artificial stripping of the placenta is the correct method, one hand in the abdomen clenched the uterus at the end of the fixed body, one hand five fingers together into a cone along the umbilical cord into the uterine cavity, exploration to the placental edge, four fingers side by side straight palm dorsal palace wall, To the palm of the foot edge of the paper such as cutting the blunt blunt dissection, to be removed after the placenta stripped. Sometimes, the full release of the placenta, but retained the uterine cavity or placenta incarcerated in the mouth of the cervix, just gently press the bottom of the uterus along the birth canal axis can be delivered to the placenta. The following are several special cases of treatment.