盆;
The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.
导致
位难产
主
依次为胎位置异常、巨大儿、宫缩乏力、软产道及
产道异常。
部；后部The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.
导致位难产主依次为胎位置异常、巨大儿、宫缩乏力、软产道及产道异常。
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