Fetal bradycardia, which is characterized by a heart rate below 100 beats per minute, indicates the compression of the umbilical cord during the peak of a uterine contraction. This condition raises concern as it signifies potential distress or compromised oxygen supply to the fetus. Monitoring the fetal heart rate and identifying bradycardia is crucial for prompt medical intervention to address the umbilical cord compression and ensure the well-being of the unborn baby.