Final answer:
The highest priority nursing intervention for a client experiencing dystocia is to monitor the fetal heart rate.
Step-by-step explanation:
The highest priority nursing intervention for a client experiencing dystocia would be monitoring fetal heart rate. Dystocia refers to difficult or prolonged labor, and monitoring the fetal heart rate is crucial to assess the well-being of the baby during labor. By monitoring the fetal heart rate, the nurse can identify any signs of fetal distress and take appropriate actions to ensure the safety of both the mother and the baby.