What characteristic defines a normal fetal heart rate pattern?

A normal fetal heart rate pattern is characterized by reassuring variability. Variability refers to the fluctuations in the heart rate that exceeds 6-25 beats per minute and indicates a well-oxygenated fetus with a healthy autonomic nervous system. This variability is a sign that the fetus is responding appropriately to stimuli and is not in distress.

In contrast, consistent decelerations often signal potential fetal distress or issues such as cord compression or uteroplacental insufficiency. A non-reactive stress test indicates that the fetal heart rate does not exhibit the expected accelerations with movement, which could raise concerns about the fetus's well-being. Intermittent bradycardia refers to periods of slow heart rate and can also indicate possible distress or complications. Therefore, reassuring variability stands out as the hallmark of a healthy fetal heart pattern, indicating adequate fetal well-being and responsiveness.