The nonstress test (NST) is a simple, noninvasive way of checking on your baby’s health. The test, sometimes called a cardiotocography, records your baby’s movement, heartbeat, and contractions. It notes changes in heart rhythm when your baby goes from resting to moving, or during contractions if you’re in labor.
How is a NST performed?
An NST is a simple, painless procedure. We will be monitoring your baby’s heartbeat, which is a way of evaluating your unborn baby. We will listen to and record the baby’s heartbeat while the baby is resting and while the baby is moving. It usually takes 20 to 40 minutes to complete an NST.
When do NST start in pregnancy?
NSTs are generally performed after 28 weeks of gestation. Before 28 weeks, the fetus is not developed enough to respond to the test protocol.
How long does a NST take?
A non-stress test (NST) monitors your baby’s heartbeat. It’s usually done if you’re past your due date or if you’re having a high-risk pregnancy. The test is painless and simple, can be done in your practitioner’s office or a hospital, and usually takes 40 to 60 minutes.
How much does an NST cost?
On MDsave, the cost of a Fetal Non-stress Test ranges from $215 to $437.
What happens when baby fails NST?
A non-stress test is noninvasive and does not pose any type of risk to the pregnant person or the fetus. If the test is failed, it usually indicates that more tests, further monitoring, or special care orders will be needed.
What do contractions look like on an NST?
Contractions are in red. When you’re looking at the screen, the fetal heart rate is usually on the top and the contractions at the bottom. When the machine prints out graph paper, you’ll see the fetal heart rate to the left and the contractions to the right.
How do I prepare for an NST test?
You don’t have to do anything special before a nonstress test. But your provider might recommend having a snack beforehand, since your baby is likely to be at her wriggliest shortly after you’ve eaten.
What should an NST look like?
A non-stress test (NST) looks at your baby’s heart rate over time (usually 20 to 30 minutes, but sometimes up to an hour). The monitor has two sensors that are placed on your belly with two belts that go around your waist. One sensor detects any contractions you may be having, even those you might not feel.
Can you see contractions on an ultrasound?
On an ultrasound, a sonographer can observe contractions — the uterine wall thickens slightly. Most likely your facial grimaces would also signal that you’re having a contraction!
Is NST test mandatory?
Typically, a nonstress test is recommended when it’s believed that the baby is at an increased risk of death. A nonstress test may be done after 26 to 28 weeks of pregnancy. Certain nonstress test results might indicate that you and your baby need further monitoring, testing or special care.
