[The characteristics of labour course and perinatal prognosis in cases of fetal persistent occiput-transverse position and persistent occiput-posterior position].

OBJECTIVE

To study the characteristics of the labour course and perinatal prognosis in cases of fetal persistent occiput-transverse position (POTP) and persistent occiput-posterior position (POPP).

METHODS

All the cases, delivered with POTP and POPP in or hospital from Nov, 1995 to July 1996 were analyzed retrospectively.

RESULTS

In abnormal fetal occipital position group, the following indices were significantly higher than those of normal group: fetal macrosomia, uterine inertia, and duration of each labour course. The speed of descending of presentation was obviously slower. The incidence of abnormal labour course was markedly increased. The rate of operative delivery was significantly higher. The total rate of operative delivery was 82.81% in the POTP group, and 92.31% in the POPP group. The incidence fetal hypoxia and neonatal asphyxia was markedly high in the abnormal occiput group.

CONCLUSIONS

The POTP and POPP are major cases of dystocia. If management is unsuitable, perinatal prognosis will be poor.