A Fetal Non-Stress Test (NST) is a prenatal procedure used to monitor the well-being of a fetus during pregnancy. It is a non-invasive test that assesses the fetal heart rate in response to the baby's movements. The NST is typically performed in the third trimester of pregnancy, usually after 28 weeks, although the timing may vary depending on the healthcare provider's recommendations and the specific circumstances of the pregnancy.
Fetal NST procedure typically works
Preparation: You will be asked to lie down on an examination table, usually in a comfortable position. You can be partially reclined or lying on your left side.
Fetal Heart Rate Monitor: Two sensors will be attached to your abdomen. One sensor measures the baby's heart rate, while the other sensor records uterine contractions if they occur.
Monitoring Session: The test usually lasts for about 20-40 minutes, during which the fetal heart rate and any uterine contractions are continuously recorded on a monitor. The healthcare provider will observe the fetal heart rate for accelerations and decelerations.
Fetal Movements: You will be given a button to press every time you feel the baby move. This helps the healthcare provider correlate fetal movements with changes in the heart rate.
Interpretation: The healthcare provider will analyze the NST results. A "reactive" NST is considered normal, where the fetal heart rate shows accelerations in response to fetal movements. A "non-reactive" NST may require further evaluation, such as a biophysical profile or a contraction stress test, to assess the baby's well-being.
The goal of the Fetal NST is to ensure that the baby is getting enough oxygen and is otherwise healthy. It is commonly used in cases of high-risk pregnancies, such as those involving diabetes, hypertension, or decreased fetal movement. It helps healthcare providers make informed decisions about the management of the pregnancy, such as the timing of delivery if any issues are detected.
It's essential to discuss the NST and its results with your healthcare provider, as they can provide personalized guidance based on your specific situation and medical history.
