You are caring for a woman in active labor, upon sterile vaginal exam you note a pulsating cord. What would be the nurses primary action at this point?

A. Turn the patient to semi-Fowler position: Changing maternal position can sometimes relieve cord compression, but the presence of a pulsating umbilical cord indicates umbilical cord prolapse, which is an obstetric emergency requiring immediate intervention beyond positioning. B. Call for immediate assistance to prepare for delivery: A pulsating cord suggests cord prolapse or imminent compromise, placing the fetus at risk for hypoxia. Immediate activation of the obstetric team is the priority to expedite delivery, typically by cesarean section if vaginal birth is not imminent. C. Oxygen at 2 L/min: Administering oxygen may support fetal oxygenation but is secondary to urgent delivery. Oxygen alone cannot resolve cord compression or prevent fetal compromise. D. Placement of a Foley catheter: Bladder emptying may help facilitate cesarean delivery, but it is not the initial priority. The urgent focus is on activating the team and preparing for immediate delivery to prevent fetal hypoxia.