Which of the following is a characteristic of non-reassuring FHR patterns?

• A. Abundant variability
• B. Fetal bradycardia
• C. Stable heart rate
• D. Normal variability

Answer: (B)

Fetal bradycardia is a defining characteristic of non-reassuring fetal heart rate (FHR) patterns. In the context of fetal monitoring, bradycardia refers to a sustained heart rate less than 110 beats per minute. This condition can indicate potential issues affecting the fetus, such as fetal hypoxia or other stressors that may compromise the baby's well-being.

In contrast, abundant variability, stable heart rate, and normal variability are generally signs of a well-oxygenated fetus. Abundant variability indicates a healthy response of the autonomic nervous system, while stable heart rate and normal variability suggest that the fetus is coping well and not under stress. Therefore, the presence of fetal bradycardia distinguishes non-reassuring patterns from reassuring ones, highlighting the importance of close monitoring and possibly further evaluation of the fetus's condition.