Results:The incidence of cephalic presentation dystocia was 17.91%, among which abnormality direction of fetal head was the major cause of dystocia and the incidence was 76.84%.

结果：头位难产的发生率为17.91%，其中胎头方位异常占头位难产总数的76.84%，是发生难产的主要原因。

youdao

Results:The incidence of cephalic presentation dystocia was 17.91%, among which abnormality direction of fetal head was the major cause of dystocia and the incidence was 76.84%.

结果：头位难产的发生率为17.91%，其中胎头方位异常占头位难产总数的76.84%，是发生难产的主要原因。

youdao