MATERNITY NURSING: AND NEWBORN NURSING TEST BANK PART 5
Mechanism of labor, also known as the cardinal movements, refers to the sequencing of events involved in posturing and positioning that allows the baby to find the easiest to come out of the birth canal. Arrange the following mechanisms of labor in the order during the course of labor and fetal delivery. View Answers: o Flexion o Engagement o Descent o Internal rotation o Expulsion o Extension o External rotation Correct The correct order is shown above. The mechanism of fetal delivery begins with descent into the pelvic inlet which may occur several days before true labor sets in the primigravida. Flexion, internal rotation, and extension are mechanisms that the fetus must perform as it accommodates through the passageway/birth canal. Eternal rotation is done after the head is delivered so that the shoulders will be easily delivered through the vaginal introitus.
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