Moderate variability in fetal heart rate is defined as:

Moderate variability in fetal heart rate is characterized by fluctuations in the heart rate that range from 6 to 25 beats per minute (bpm). This range indicates that the fetal autonomic nervous system is functioning well and reflects a healthy fetus. Moderate variability suggests that the fetus is experiencing adequate oxygenation and is not under stress, which is essential for monitoring fetal well-being during pregnancy. Recognizing this metric is crucial in fetal health surveillance as it can greatly influence clinical decision-making and the management of labor and delivery.

By understanding this concept, healthcare professionals can effectively assess fetal health and intervene if necessary. The definition of moderate variability stands in contrast to other ranges, which indicate either minimal or significant deviations from the norm, often suggesting different clinical implications regarding fetal health and potential need for further assessment or intervention.