![]() Contraction stress testĪ contraction stress test is an invasive test to stress the baby and measure fetal heart rate response to an induced contraction. Less than one pocket of this size would result in a score of 0. If there is at least one pocket of fluid 2 or more centimeters, that is a score of 2. Amniotic fluid volume (0-2 points)Īmniotic fluid volume is, like it sounds, a measure of amniotic fluid - measured in pockets around the baby. One or more episode of extension and flexion is considered a score of 2, while no or slow movement is a score of 0. Fetal tone (0-2 points)įetal tone is a measure extension in flexion of the head and neck. Three or more body/limb movements is a score of 2, while less than 3 movements in the same time frame is a score of 0. Is the baby moving their body or their limbs? Gross body movements measure the amount of fetal body movement. Is the baby making movements of breathing? This is something that babies do in utero to practice breathing so that they can transfer from the uterus to the outside world healthily.įetal breathing movements happening one or more times for 30 seconds is a score of 2, while absent breathing movements or breathing movements under 30 seconds are a score of 0. Fetal breathing movements (0-2 points)įetal breathing movements can be measured as part of a biophysical profile. A reactive result to a nonstress test results in a score of 2, non-reactive is 0. A nonstress test may be done on its own, or it may become part of the overall biophysical profile if more tests are done after. The first component of a biophysical profile is a fetal heart rate test, usually a nonstress test as described above. In a biophysical profile, an overall score of 8-10 is considered normal, where less than 8 is considered indicative of fetal hypoxia, which means the baby might not be getting enough oxygen, and labor may need to be induced. The following components make up the biophysical profile and each of them is scored with 0 points or 2 points. There are multiple components to a biophysical profile, described below. Biophysical profileĪ biophysical profile is a non-invasive assessment of fetal well-being using ultrasound and a nonstress test. As Meris shares at the end of the video, her daughter "failed" almost every NST but was born perfectly healthy. It's important to note that a nonreactive nonstress test result does not indicate anything bad in and of itself, just that the heart rate is not accelerating as expected, and more tests should be done to investigate. Usually the tests that would follow a nonreactive nonstress test is a biophysical profile or a contraction stress test. Further testing after a nonreactive nonstress test is recommended. Non-reactiveĪ nonreactive result on a nonstress test is abnormal and occurs when fetal heart rate does not accelerate sufficiently with fetal movement. Reactive results on a nonstress test are considered normal, and indicate that the fetal heart rate is a normal rate, with moderate variability, and accelerates by greater than 15 beats per minute for greater than 15 seconds, more than twice, within 20 minutes. The desired result of an NST is an acceleration - the baby's heart rate should increase or accelerate while they are moving around. Results in a nonstress test can be either reactive or nonreactive. A vibroacoustic device is placed on the patient's abdomen near where the fetal head is, and sound is emitted for several seconds. If the fetus is sleeping, a vibroacoustic device may be used to awaken them. As Meris notes in the video, this button is not always available, but if it is, that's its purpose - to indicate when exactly the patient felt fetal movement. Patient teaching for the nonstress test is that the patient will push a button when they feel fetal movement. ![]() And then the Doppler is a fetal heart rate ultrasound transducer. A tocometer measures the stress that the uterus is under, like whether or not it's contracting. Patient teachingĪ nonstress test usually involves two devices: a tocometer and a Doppler. A nonstress test may be indicated when there is decreased fetal movement, advanced maternal age, gestational hypertension, or postmaturity (post-42 weeks gestation).Ī nonstress test gets its name because it does not put the patient or the baby under any stress to perform the procedure, it's just monitoring what the baby is doing. A nonstress test is a non-invasive test done in the third trimester of pregnancy to measure the fetal heart rate response to fetal movement. ![]()
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