Non-Stress Test (NST) in Pregnancy: What to Expect
Learn about the non-stress test (NST), a safe and painless way to check your baby's heartbeat and movement during pregnancy. Find out when it's recommended, what the results mean, and what to expect.
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A non-stress test (NST) monitors your baby's heart rate and movement. It's painless, takes 20-30 minutes, and is usually done after 28 weeks. A reactive result is reassuring; a non-reactive one may need extra checks.
What is a Non-Stress Test?
A non-stress test (NST) checks your baby's heart rate and how it responds to movement. It's a safe, painless test that usually takes about 20-30 minutes.
Why is the NST Done?
Doctors may recommend an NST if you have certain risk factors. It helps ensure your baby is healthy and getting enough oxygen.
- High blood pressure or preeclampsia
- Diabetes
- Decreased fetal movement
- Small for gestational age
- Previous pregnancy complications
How is the NST Performed?
You'll lie down with a monitor belt around your belly. You'll press a button every time you feel your baby move. The test runs for 20-30 minutes.
Understanding NST Results
A reactive result means the baby's heart rate accelerated twice with movement, which is healthy. A non-reactive result might mean the baby is sleeping, so more tests are done.
What Happens After the NST?
If your result is reactive, you can continue your regular prenatal care. If it's non-reactive, your doctor may suggest a biophysical profile or other tests to get more information.