Which of the following indicates a positive contraction stress test result?

• A. No late decelerations occurred
• B. Persistent late decelerations occurred
• C. Variable decelerations are present
• D. Normal fetal heart rate pattern

Answer: (B)

A positive contraction stress test result indicates that there are abnormal fetal responses to uterine contractions, which is typically characterized by the presence of persistent late decelerations. Late decelerations suggest that the fetus may be experiencing stress, usually due to uteroplacental insufficiency, meaning that the blood flow and oxygen supply to the fetus may be compromised during contractions.

This is an important finding as it may indicate the need for closer monitoring or even intervention, depending on the overall clinical situation. The primary aim of the contraction stress test is to assess the fetal heart rate response to contractions and determine if the fetus can tolerate the stress of labor. Thus, the presence of persistent late decelerations is a significant indicator in this context.

In contrast, the absence of late decelerations or the presence of variable decelerations or a normal fetal heart rate pattern would not indicate fetal distress and would suggest that the fetus is likely handling the contractions without any evidence of compromise.