Contraction stress test
A contraction stress test (CST) measures the fetus's ability to tolerate the stress of uterine contractions started (induced) before true labour begins.
Electronic fetal heart monitoring is done during a contraction stress test to evaluate the fetus's heart rate during contractions. The fetus's heart rate during contractions helps evaluate the placenta's ability to provide enough oxygen to the fetus.
A contraction stress test that indicates the placenta is not supplying enough oxygen to the fetus will help the doctor determine the safest method of delivery.
A contraction stress test is also called an oxytocin challenge test.
| Author: | Jeannette Curtis Caroline Rea, RN, BS, MS | Last Updated: May 25, 2007 |
| Medical Review: | Patrice Burgess, MD - Family Medicine Adam Husney, MD - Family Medicine Kathleen Romito, MD - Family Medicine | |
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