盆;
盖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
主要因
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.
导致位难产主要因为胎位置异常、巨大儿、宫缩乏力、软产道及产道异常。
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