A client who is in labor states, "I think my water just broke!" The nurse notes that the umbilical cord is on the perineum. Which action should the nurse perform first?

A. Administer oxygen via face mask: Providing oxygen can improve fetal oxygenation but does not address the immediate risk of cord compression. Oxygen support is important but secondary to relieving pressure on the cord. B. Place the client in Trendelenburg: Elevating the client’s hips or placing her in a Trendelenburg or knee-chest position relieves pressure on the prolapsed umbilical cord, improving fetal blood flow. This is the priority intervention to prevent hypoxia and fetal compromise. C. Notify the operating room team: Preparing for an emergency cesarean is essential, but immediate action to relieve cord compression must occur before transport to the OR. D. Administer a fluid bolus of 500 mL: IV fluids can support maternal blood pressure but do not directly alleviate cord compression, making it a supportive rather than primary intervention.