At this point the baby is facing one of the mother's inner thighs. This happens when the mother's pelvic floor muscles cause the baby to turn so that it can be born with one hip directly in front of the other. In order to begin the birth, internal rotation needs to occur. Descent is thus as for the presenting fetal head and delay in descent is a cardinal sign of possible problems with the delivery of the head. As the baby's bottom is the same size in the term baby as the baby's head. In the more common breech presentations, the baby’s bottom (rather than feet or knees) is what is first to descend through the maternal pelvis and emerge from the vagina.Īt the beginning of labour, the baby is generally in an oblique position, facing either the right or left side of the mother's back. This is extremely rare.Īs in labour with a baby in a normal head-down position, uterine contractions typically occur at regular intervals and gradually cause the cervix to become thinner and to open.
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