The Nurse-Educator Is Instructing on the Physiology of Fetal Heart

The nurse-educator is instructing on the physiology of fetal heart rate (FHR) patterns. He is showing the students an EFM strip, and there is a tracing that is classified as baseline 140 bpm, moderate variability, accelerations, and 2 decelerations. A half hour later the baseline is 150 bpm, there is minimal variability, accelerations, and 3 decelerations. Which of these findings would the nurse attribute to the parasympathetic nervous system?

A) The baseline changes from 140 bpm to 150 bpm.
B) The change from moderate variability to minimal variability.
C) The consistent presence of accelerations.
D) The presence of 2 and then 3 decelerations.