Which of the following is a sign that may warrant a cesarean birth in response to a positive contraction stress test?

• A. Presence of Braxton Hicks contractions
• B. Persistent fetal heart rate decelerations
• C. Normal fetal movements
• D. No change in maternal status

Answer: (B)

A positive contraction stress test indicates that there may be a risk to the fetus when subjected to contractions, as it shows that the fetal heart rate decelerations occur in response to uterine contractions. Persistent fetal heart rate decelerations suggest that the fetus is experiencing stress, which could indicate inadequate oxygenation, and if this stress continues, delivery via cesarean birth may be necessary to ensure the safety of both the mother and the fetus.

In contrast, the presence of Braxton Hicks contractions and normal fetal movements do not suggest fetal distress and are not indicators for a cesarean birth. Additionally, a lack of change in maternal status does not imply that a cesarean is warranted, as it does not address the potential risks to the fetus suggested by a positive contraction stress test. Therefore, the persistent fetal heart rate decelerations are the critical factor that can lead to the recommendation for a cesarean birth in this context.