Final answer:
During the active phase of labor, the nurse would anticipate assessing the fetal heart rate every 30 minutes.
Step-by-step explanation:
The nurse would anticipate assessing the fetal heart rate every 30 minutes when planning the care of a woman in the active phase of labor. During this stage, uterine contractions become more frequent and last longer, and as a result, the fetal heart rate needs to be monitored more frequently to ensure the well-being of the baby.