The major indicatio of subtotal hysterectomy were postpartum hemorrhage, uterine inertia and placental related factors.

产后出血、宫缩乏力和盘因素是子宫次全切术手术指征。

The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.

导致头位难产因素依次为头位置、巨大儿、宫缩乏力、软产及骨产。