hej smülschen! jag hittade inget bra på svenska så här har ni lite info på engelska (mitt första språk)
Why is Occiput Posterior (vidöppet) a labor challenge?
When the baby is in a posterior position, the boney part of the head is pressed against the boney part of the pelvis. The pressure of the contractions pushes the head into the pelvis and can cause tremendous back pain. Some women feel the pressure even between contractions. Few women expect to feel their contractions as mostly a back ache.
Because the posterior position puts bone near bone, it is more difficult for the baby to fit into the pelvis. Posterior babies generally require longer labors, and if the baby persists in a posterior position, second stage may be longer than average as well. This can be fatiguing for a woman. When the baby remains in a posterior position (5.5% of labors), the mother is more likely to experience a longer than average labor (both first and second stages); the use of synthetic oxytocin to augment (speed up) labor; epidural for pain relief and a cesarean surgery.
Some women experiencing back pain in labor find relief from regional blocks, however anesthesiologists will not guarantee they can remove the back pain. There are various labor positions and techniques that can be used to encourage the baby to rotate, however they may not be effective.