肩部难产是指头先露,胎头娩出后,肩部嵌塞于骨盆入口上方造成的难产。肩难产是围产儿死亡的原因之一。过去临床上很少见,近年来随着胎儿体重的增加,巨大儿的发生率也增加,肩难产率也相应上升,如发育肩难产即使胎儿幸免于死,也易 Shoulder dystocia refers to the first dew, after the birth of the fetal head, impaction of the shoulder above the pelvic inlet caused by dystocia. One of the causes of perinatal death is shoulder dystocia. In the past clinically rare, with the increase in fetal weight in recent years, the incidence of huge children also increased, shoulder dystocia rate also increased, such as the development of shoulder dystocia even if the fetus survived, but also easy