Measure the strength and length of your labor contractions.Įxternal monitoring can be done at any time after 20 weeks of pregnancy.Find out if the stress of labor is putting your baby's health at risk.(This is called delayed fetal growth.) Monitoring may also be done if you have diabetes or high blood pressure or if you are over 41 weeks pregnant. Check your baby's health if your baby has not been growing normally.Or your doctor may talk to you about a cesarean section (C-section). If the test shows that your baby may be in danger, your doctor may suggest starting (inducing) labor early. If a stress test shows that your baby is not getting enough oxygen, your doctor can decide about the safest way to deliver. Check your placenta to make sure that it is giving your baby enough oxygen.If your baby does not move during this test, more tests will be needed. External fetal heart monitoring will be done during a nonstress test to check your baby's heart rate while at rest and while moving. Check on your baby's health if your doctor thinks there may be problems.Find out if you are having preterm labor.Measure how often you have contractions and how long they last.
Why It Is Done External fetal heart monitoring Internal monitoring is more exact than external monitoring for keeping track of your baby's heart rate and your contractions. The strength and timing of your contractions is often printed out on a chart. Your baby's heartbeat may be heard as a beeping sound or printed out on a chart.Ī small tube that measures contractions may be placed in your uterus next to your baby. The electrode is then attached to your baby's scalp. A thin wire (electrode) from the sensor is put through your cervix into your uterus. After it is started, it is continued until delivery.įor internal monitoring, a sensor is strapped to your thigh. Your amniotic sac must have ruptured as well.
It can be done only after your cervix has dilated to at least 2 centimeters (cm). Internal monitoring is done during labor. Using a remote monitor allows you to walk around freely. This monitor is usually at a nurse's station. At some hospitals, the sensors can send the details about your baby's heart rate and your contractions to a remote monitor. It allows you to be checked without being hooked up to a machine. Sometimes external monitoring is done remotely. It may help predict whether your baby can handle the stress of labor and vaginal delivery. It may be done to check on your baby's health if your baby does not move enough during a nonstress test. This test records changes in your baby's heart rate when you have contractions. A nonstress test may be done with a fetal ultrasound to check the amount of amniotic fluid.Įxternal monitoring is also done for a contraction stress test. This test records your baby's heart rate while your baby is moving and not moving. How often you have contractions and how long they last may be printed on a chart.Įxternal monitoring is used for a nonstress test. Your baby's heartbeat may be heard as a beeping sound or printed out on a chart. The sensors are connected to a machine that records the details. The other sensor measures how long your contractions last. One sensor uses reflected sound waves (ultrasound) to keep track of your baby's heart rate. They are held in place with elastic belts on your belly. More often, it is done using two flat devices (sensors). Sometimes it's done during labor.Įxternal monitoring can be done by listening to your baby's heartbeat with a special stethoscope. You may have external monitoring at different times during your pregnancy. Two types of monitoring can be done: external and internal. Your baby's heart rate is a good way to tell if your baby is doing well or may have some problems. It also checks the duration of the contractions of your uterus. It keeps track of the heart rate of your baby ( fetus). Electronic fetal heart monitoring is done during pregnancy, labor, and delivery.
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