A nurse is caring for a client who is at 37 weeks of gestation and has a prescription for a nonstress test. Which of the following actions should the nurse take?

During a nonstress test (NST), the client is instructed to press a button each time fetal movement is felt so the nurse can correlate movement with fetal heart rate accelerations. A spiral electrode (internal fetal monitor) is used during labor, not for an NST. The client should void before the procedure for comfort during the test. Oxytocin is used during a contraction stress test (CST), not an NST.