What is the purpose of a non-stress test (NST) during pregnancy?

What is the purpose of a non-stress test (NST) during pregnancy?

• A. To estimate fetal weight
• B. To assess fetal well-being by monitoring heart rate responses
• C. To evaluate placental function
• D. To determine fetal position

Answer: (B)

The purpose of a non-stress test (NST) during pregnancy is to assess fetal well-being by monitoring heart rate responses. This test specifically evaluates how the fetal heart rate changes in response to fetal movements, which can indicate the fetus's condition and overall health. An active fetus typically shows accelerations in heart rate, suggesting that it is receiving adequate oxygen and is not in distress. NSTs are non-invasive and are often conducted in the third trimester when fetal monitoring becomes increasingly important to ensure that the fetus is thriving and there are no signs of complications. The other options focus on different aspects of prenatal care. Estimating fetal weight involves ultrasound measurements, while evaluating placental function is typically assessed through tests such as Doppler studies or biophysical profiles. Determining fetal position is also accomplished through physical examination, ultrasounds, or imaging techniques, which are distinct from the non-stress test's aim of monitoring heart rate patterns.

The purpose of a non-stress test (NST) during pregnancy is to assess fetal well-being by monitoring heart rate responses. This test specifically evaluates how the fetal heart rate changes in response to fetal movements, which can indicate the fetus's condition and overall health. An active fetus typically shows accelerations in heart rate, suggesting that it is receiving adequate oxygen and is not in distress. NSTs are non-invasive and are often conducted in the third trimester when fetal monitoring becomes increasingly important to ensure that the fetus is thriving and there are no signs of complications.

The other options focus on different aspects of prenatal care. Estimating fetal weight involves ultrasound measurements, while evaluating placental function is typically assessed through tests such as Doppler studies or biophysical profiles. Determining fetal position is also accomplished through physical examination, ultrasounds, or imaging techniques, which are distinct from the non-stress test's aim of monitoring heart rate patterns.