The main causes of dystocia of vertex presentation were occiput malpresentation, macrosomic infant, uterine atony, abnormal pelvic and genital tract.
导致头位难产的主要因素依次为胎头位置异、儿、宫缩力、软产产异。
To survey the normal values of pelvic inclination of external pelvimetry and to provide evidence so as to estimate dystocia risk index for antenatal care.
测量盆倾斜度外测量正值,为产前检查估计难产风险指数提供依据。
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