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Home > Patient & Family Resources > Health Library > Nonstress Test
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A nonstress test is a test that checks your baby's heartbeat patterns. It can show heart rate changes when the baby moves. It also shows changes when you have contractions, if you're having them. A fetal heart rate that speeds up when the baby moves means the baby is getting enough oxygen.
A nonstress test is often done when there is any question about how the baby is doing during later pregnancy. Some women with high-risk pregnancies are tested every week or twice a week in the third trimester.
Sometimes a nonstress test is done together with a fetal ultrasound. This is called a biophysical profile (BPP).
If you smoke, you will be asked to stop smoking for 2 hours before the test. This is because smoking affects your baby's heart rate and movements.
For the test, you will lie back on a padded exam table.
This test is painless. It uses only monitor sensors, which are placed on your belly.
Current as of:
October 8, 2020
Author: Healthwise StaffMedical Review: Kathleen Romito MD - Family MedicineAdam Husney MD - Family MedicineLois Jovanovic MD - EndocrinologyFemi Olatunbosun MB, FRCSC - Obstetrics and Gynecology
Current as of: October 8, 2020
Author: Healthwise Staff
Medical Review:Kathleen Romito MD - Family Medicine & Adam Husney MD - Family Medicine & Lois Jovanovic MD - Endocrinology & Femi Olatunbosun MB, FRCSC - Obstetrics and Gynecology
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