Conclusions When the pelvis was normal, fetalmacrosomia, 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。
2
Poorly controlled gestational diabetes is associated with an increase in the incidence of preeclampsia, polyhydramnios, fetalmacrosomia, birth trauma, operative delivery, and neonatal hypoglycemia.
Conclusions the incidence of fetalmacrosomia, the average birth weight, the percentage of superior fetalmacrosomia and the rate of cesarean section gradually rose in Yantai in the past 30 years.