A nurse is caring for a client who is at 12 weeks of gestation during an initial prenatal visit. The client asks, "What is a normal fetal heart rate?" Which of the following ranges should the nurse provide?

Choice A rationale A fetal heart rate of 160 to 190 beats per minute is elevated and falls outside the normal physiological range. This sustained tachycardia can indicate fetal distress, such as hypoxia or infection, and warrants immediate investigation and potential intervention to ensure adequate oxygenation and fetal well-being. Choice B rationale A fetal heart rate of 110 to 160 beats per minute is considered the normal range for a healthy fetus. This range reflects proper autonomic nervous system regulation, adequate oxygenation, and overall fetal well-being, indicating a balanced interplay between sympathetic and parasympathetic influences on cardiac activity. Choice C rationale A fetal heart rate of 100 to 110 beats per minute is below the normal range, indicating mild bradycardia. While sometimes benign, persistent bradycardia can signal fetal compromise, such as umbilical cord compression or placental insufficiency, requiring close monitoring and further assessment. Choice D rationale A fetal heart rate of 80 to 100 beats per minute is significantly below the normal range, indicating severe bradycardia. This marked decrease in heart rate is a critical sign of significant fetal distress, often associated with severe hypoxia or acidosis, and necessitates immediate medical intervention.