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
要因素依次为胎头位置异常、巨大儿、宫缩乏力、软道及
道异常。
部；后头部The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.
导致头位难要因素依次为胎头位置异常、巨大儿、宫缩乏力、软道及道异常。
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