![]() Fifth step – ExtentionĪs fetal occiput slip below the pubic arch (which is also called crawling), the fetal head began to extend. But the shoulder does not rotate along with the head of the fetus. Although on the surface it can appear complicated, breaking the process down into individual steps makes it much easier to understand. ![]() These 7 mechanisms of labor occur in normal labor which is a normal lie, presentation, and attitude. This is when the whole body of the baby is born. it causes the back of the baby’s head to rotate to anterior from its original transverse position. Describing the mechanism of labour is a common topic for OSCEs and MCQs. At the same time, the anterior shoulder of the baby passes through the pubic arch, and then the posterior shoulder will pass through the pelvic canal. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright. Forth step – Internal rotationĪs uterine contraction increases and fetal occiput advance through the maternal pelvis, it gets resistance from the maternal pelvic floor. It reduces anteroposterior diameter which makes it easier to pass through the pelvic bone. Flexion usually occurs due to resistance of the pelvic floor. Labor is the process through which a fetus and placenta are delivered from the uterus through the vagina. it helps the baby to go down through the pelvic bone easily. The lowest diameter of the baby head is when the baby flexes its head. This all happens fluidly during the process of delivery. Decent is usually occurred after labor start due to uterine contraction and maternal pushing down effort. Cardinal movements-specific movements the baby does, in this specific order, to exit mom successfully. This is the time where your baby head moves down into the pelvis. If this is your first pregnancy, the baby head might be engaged even before the labor started. This is the time when the baby head entered the mother’s pelvis (usually in a transverse position). A baby’s position is important for birth to proceed naturally, allowing the smallest part of the baby to present first.
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