A contraction stress test is ordered to a client at 35 weeks’ gestation. After half an hour, the client’s uterus begins to contract and the midwife observes three 40 - second - long contractions in a 10 - minute window. The client has two contractions within the next five minutes. The midwife notes that the fetal heart rate decreases toward the end of the contraction and afterward. This happends during more than 50% of the contractions. After stopping the oxytocin, which of the following is the next action of the midwife?