A reactive NST indicates fetal well-being; which of the following statements would align with this result?

• A. The test indicates fetal distress
• B. The test indicates placenta previa
• C. The test indicates oligohydramnios
• D. The test indicates fetal well-being

Answer: (D)

A reactive NST shows fetal well-being because the heart rate accelerates with fetal movement, reflecting adequate oxygenation and intact autonomic control. An NST is considered reactive when there are at least two accelerations of the fetal heart rate above baseline within a 20–40 minute window, with normal variability and no recurrent decelerations. This pattern indicates the fetus is currently well-oxygenated and not in distress.

Placenta previa or oligohydramnios are not diagnosed by NST; they are assessed by ultrasound or amniotic fluid evaluation, respectively. Therefore, the statement that aligns with a reactive NST is that the fetus is well-being.