Persistent occipital lateral dystocia

Sustained occipital transverse position is due to the difficulty of delivery due to the inability of the fetal position to change to the normal position during delivery. Persistent occipital transverse position is because the fetal head is connected in the occipital transverse position during delivery. During the descending process, when the double parietal diameter of the fetal head reaches or approaches the middle pelvic plane, most of the internal rotation can be completed and turned into anterior Bit natural delivery. 5% to 10% until the end of labor, the fetal headrest continues to be unable to turn forward, and is still located behind or lateral to the mother's pelvis.