This test combines a fetal ultrasound with fetal heart rate monitoring nonstress test. A nonstress test is another test conducted during pregnancy, typically after 28 weeks. Your doctor may schedule the test in their office or at the hospital, and it usually takes about 30 minutes. During the nonstress portion, your doctor will place a special belt around your stomach. Keep in mind, some babies are asleep and not very active during this test.
If so, your doctor will attempt to wake up your baby, sometimes by making a noise near your stomach. But this time, an ultrasound technician places a special gel over your stomach. The technician then moves a device over your stomach, which creates an image of your baby. According to the Mayo Clinic , your doctor may recommend a biophysical profile if you:.
A BPP takes place later in the pregnancy, typically after weeks 24 or Typically, doctors discuss scores immediately after the test. Ideally, you want a final score between 8 and 10 points, as this indicates that your baby is healthy. If you score between six and eight points, your doctor may re-test within the next 24 hours. Here is the criteria for scoring:. With regard to fetal breathing, your baby must have at least one episode of fetal breathing lasting at least 30 seconds in 30 minutes to receive two points.
A multiple pregnancy such as twins or triplets. A pregnancy that has gone past your due date, between 40 and 42 weeks. Abnormal results on a nonstress test. How To Prepare If you smoke, you will be asked to stop smoking for 2 hours before testing. This is because smoking affects the baby's heart rate and movements.
You may be asked to drink water or other liquids just before testing. You will be able to empty your bladder after the test.
Nonstress test Two elastic belts with sensors are placed across your belly. One sensor tracks your baby's heart rate with reflected sound waves Doppler ultrasound. The other sensor measures how long your contractions are, if you are having any. You may hear your baby's heartbeat as a beeping sound.
You may see it printed out on a chart. You may be asked to push a button on the machine when your baby moves or you have a contraction. This helps your doctor look at how your baby's heart reacts to movement and contractions. If there isn't much movement, it may be because the baby is asleep. If this happens during your test, the technician may try to wake the baby with a loud noise or by having you eat or drink something.
Fetal ultrasound A gel will be spread on your belly. This helps the passage of sound waves. A small, handheld sensor will be pressed against the gel on your skin and moved across your belly a few times. You may be able to watch the screen to see the picture of your baby during the test. How long the test takes The nonstress test will take about 20 to 40 minutes.
The fetal ultrasound will take about 30 to 60 minutes. How It Feels Lying on your back or side during the test may be uncomfortable. A biophysical profile is typically done after 32 to 34 weeks of pregnancy.
The biophysical profile is often done in a private room at your healthcare provider's office. Your provider will explain the test to you. Ask them any questions you have about the test. The nonstress test is often done first. The provider puts a belt with a device sensor attached around your belly. This will be displayed on a screen.
The provider puts a second belt and sensor around you right next to the first. This sensor measures your contractions. Even though labor may still be a few weeks off, contractions are normal at this point in your pregnancy. This part of the test often lasts 20 to 30 minutes. The baby might be asleep. If this happens, a nurse may try to wake the baby with a buzzer.
The ultrasound part of the test may take up to 1 hour. Your provider will put warmed ultrasound gel on your bare belly. The provider will press a small, handheld wand transducer into the gel and against your belly. Images of your baby in your uterus will be shown on a screen.
They will also measure the amniotic fluid around the baby. When this part of the exam is complete, the provider will wipe the ultrasound gel off your belly.
You can get dressed. You will talk with your provider about what the score means. This may mean inducing labor.
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