To apply OB theory, in the sim lab I create a delivery room and talk the students through each role. One student is the nurse midwife, one the circulating/delivery room nurse, another the nursery nurse, one is the mother's voice, another the coach. I stop the action and explain the rationales for each action. All students stop and count fetal heart rate, we review apgar score after the birth mannequin pushes out the plastic fetus etc. I have them see how all of the theory is applied directly in the delivery room.