Why is it painful to give birth naturally in the rop position?

As we all know, fetal position is one of the primary factors that affect whether natural birth can be chosen. If the fetus is in a transverse position in the late pregnancy, it will not only increase the difficulty of choosing natural birth, but also increase the probability of risk. It is not difficult to see that if pregnant mothers want to choose natural childbirth, having a normal fetal position is very important. So can I choose a natural birth when the fetus is in the rop position? Why is it painful to choose a natural birth when the fetus is in the rop position?

There is only one normal fetal position, which is the occiput anterior position (a type of cephalic position), that is, the fetus's back is facing forward (close to the mother's belly) and the chest is facing backward (close to the mother's spine), with the hands crossed on the chest, the legs crossed, the head bent, and the back of the head (on the head) at the smallest.

During the B-ultrasound examination, one of the reports includes a fetal position ROP. What does it mean? ROP refers to the right occipital-posterior fetal position. Before 28 weeks of pregnancy, because the pregnant woman has relatively more amniotic fluid and the fetus is relatively small, it has a large range of movement in the uterus, so it is not easy to fix its position. After 32 weeks of pregnancy, the baby grows rapidly, the amniotic fluid of the pregnant woman decreases relatively, and the posture and position of the fetus are relatively fixed. Therefore, after 32 weeks of pregnancy, if the baby is still in the "transverse position", it is basically certain. Of course, it does not rule out the possibility that an extremely small number of fetuses will have an "unexpected move".

Therefore, the best time to correct the transverse position of the fetus is between 30 and 32 weeks of pregnancy. Before the seventh month of pregnancy, the transverse position of the fetus may be converted to a normal position. If the fetal position has not been corrected in the eighth month of pregnancy, it is necessary to correct the fetal position.

Under normal circumstances, as long as the pregnant mother conducts prenatal check-ups on time, the transverse position of the fetus can be detected through B-ultrasound. In addition, even if the transverse position of the fetus is detected before the 32nd week, the pregnant mother does not need to worry too much, because the fetus may continue to move at this time. Generally, it takes more than 32 weeks to determine whether the fetus is in a transverse position. Although babies in a transverse position are most likely to be delivered by caesarean section, it is not likely to cause health harm to the mother or fetus.

ROP is first a breech presentation, P is posterior presentation. If ROP does not occur before delivery, it does not have much practical significance. Only after the cervix is ​​fully dilated, ROP is called persistent occiput posterior presentation. In this case, she may (choose natural delivery) to give birth, but the probability is not high.

Because the diameter is relatively large, it may not fit the pelvic entrance and may still continue in the middle pelvic position. In this case, how can (the baby) have a smooth natural delivery? One way is to help (the baby) turn the fetal head position, that is, the doctor uses technology to turn the fetal head position to loa, which is occiput anterior position. In addition, if the cervix is ​​close to full dilation, but not yet fully dilated, for example, when the cervix is ​​adjusted to 8 cm or 7 cm, you can let her sleep on her side and correct it through posture methods.