What is a Contraction Stress Test?
This test measures your baby’s heart rate during contractions in order to make sure that she is getting the necessary oxygen from the placenta during labor.
When is the Contraction Stress Test Administered?
This test is usually done at the very end of pregnancy, prior to an induction.
What is
the Contraction Stress Test Procedure?
You will lie down on your left side and have two elastic belts with monitors placed on your belly. One monitors the baby’s heartbeat and the other monitors your contractions. If you are not having contractions on your own, an injection of Pitocin (Oxytocin) will be given and you will be monitored to see how your baby responds to the contractions via an electronic fetal monitor on your belly. The test lasts until you’ve had three contractions, each lasting 45 seconds, within a ten-minute span.
What do the Contraction Stress Test Results Mean?
Normal results of a contraction stress test occur when the baby’s heartbeat does not slow in response to the contractions. This is a “normal” or “negative” result and typically means your baby is reacting fine and will do so for at least the next week.
Abnormal results of a contraction stress test occur when the baby’s heart does slow down in response to a contraction (deceleration). This means the test result is “positive” and signals that your baby may be under stress. You will typically be recommended for delivery soon and be induced or schedule a cesarean section.
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