Nonstress Test for Pregnancy
Medically reviewed by Drugs.com. Last updated on Oct 31, 2022.
What do I need to know about a nonstress test?
A nonstress test measures your baby's heart rate and movements. Nonstress means that no stress will be placed on your baby during the test.
How do I prepare for a nonstress test?
Your healthcare provider will talk to you about how to prepare for this test. He or she may tell you to eat and drink plenty of fluids before your test. If you smoke, you may be asked not to smoke within 2 hours before the test. He or she will also tell you which medicines to take or not take on the day of your test.
What will happen during a nonstress test?
You may be asked to lie down or recline back for the test on a bed. One or 2 belts with sensors will be placed around your abdomen. Your baby's heart rate will be recorded with a machine. If your baby does not move, your baby may be asleep. Your healthcare provider may make a noise near your abdomen to try to wake your baby. The test usually takes about 20 minutes, but can take longer if your baby needs to be awakened.
What do I need to know about the test results?
Your baby will be expected to move at least 2 times for a certain amount of time. Your baby's heart rate will be expected to go up by a certain number of beats per minute during movement. If your baby does not move as expected, the test may need to be repeated or you may need other tests.
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