The nurse assesses a client in labor due to a noted prolonged fetal heart rate deceleration (HR 118 bpm) on the monitor. Upon entering the room, the client reports "a feeling of something weird between her legs," and the nurse notes an umbilical cord prolapse upon assessment. The nurse immediately alerts the team and educates the client about the complication and nursing interventions. What is the priority nursing intervention when umbilical cord prolapse is noted?