词
盆;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
的主要因素依次为胎头位置
常、巨大儿、宫缩乏力、软
及
常。
部；后头部The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.
导致头位难的主要因素依次为胎头位置常、巨大儿、宫缩乏力、软及常。
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