Final answer:
The Contraction Stress Test (CST) or Oxytocin Challenge Test (OCT) is a medical procedure used during pregnancy to assess the response of the fetus to contractions.
Step-by-step explanation:
The Contraction Stress Test (CST) or Oxytocin Challenge Test (OCT) is a medical procedure used during pregnancy to assess the response of the fetus to contractions. The test involves stimulating contractions and monitoring the fetus's heart rate to determine if it can handle the stress of labor.
During the test, contractions are induced either by administering oxytocin (a hormone that stimulates uterine contractions) or by stimulating the nipples. The fetus's heart rate is continuously monitored using a fetal heart rate monitor. If the fetus's heart rate remains stable during the contractions, it indicates that the fetus can handle the stress of labor.
The CST/OCT is typically done when there is concern about the well-being of the fetus, such as reduced fetal movements or certain medical conditions in the mother. It helps healthcare providers make decisions about the timing and type of delivery to ensure the safety of both the mother and the baby.