A nurse is caring for a client who is in the first stage of labor, undergoing external fetal monitoring, and receiving Oxytocin IV for labor augmentation at 5 mu/hr. The nurse observes variable decelerations in the fetal heart rate on the monitor strip. Which of the following is a correct nursing intervention for this finding?

Variable decelerations in the fetal heart rate are caused by umbilical cord compression and are characterized by their abrupt onset and variable timing relative to contractions. The first-line nursing intervention is a position change to relieve cord compression. Placing the client in the knee-chest position — or alternatively in a lateral Trendelenburg or side-lying position — shifts the presenting part off the umbilical cord, improving fetal oxygenation. This is the correct initial intervention. Administering magnesium sulfate is used for seizure prophylaxis in preeclampsia or for neuroprotection in preterm labor, not for variable decelerations. Stopping the oxytocin IV is an appropriate step if the decelerations are severe, persistent, or do not resolve with positioning, but it is not the first intervention listed that directly addresses cord compression. Calling the provider and preparing for a cesarean section is premature without first attempting conservative measures; cesarean birth is reserved for unresolved or worsening non-reassuring fetal status. The priority sequence for variable decelerations is: reposition the client, administer oxygen if needed, discontinue oxytocin if decelerations persist, notify the provider, and prepare for operative delivery only if conservative measures fail.