NCC C-EFM Practice Exam 2025 – Complete Prep Resource

An abrupt decrease in fetal heart rate is often a concerning sign that may indicate possible uteroplacental insufficiency. This condition occurs when the placenta is not delivering enough oxygen and nutrients to the fetus, leading to stress and diminished heart rate. A decrease in fetal heart rate, especially if it is abrupt, suggests that the fetus might be in distress and may not be receiving adequate blood flow or oxygen.

Monitoring fetal heart rate patterns is critical during pregnancy and labor since deviations from normal patterns can signal potential problems that require immediate intervention. While other options describe scenarios that do not typically lead to a significant change in heart rate, such as the fetal response to activity or a sleep cycle, an abrupt decrease is more directly associated with physiological concerns like uteroplacental insufficiency, which demands close observation and prompt management.