Final answer:
In summary, correct statements about the Nonstress Test (NST) are that it is a primary method of antenatal fetal assessment, measures the relationship of the fetal heart rate to fetal movement, and can be performed in an outpatient setting.
Step-by-step explanation:
The Nonstress Test (NST) is a common prenatal test used to check on a baby's health. Among the given statements:
- The NST is a primary method of antenatal fetal assessment.
- The NST measures the relationship of the fetal heart rate to fetal movement.
- The NST can easily be performed in an outpatient setting.
The other statements given are incorrect because:
- The NST continues to be useful after 38 weeks gestation and is often used to monitor post-term pregnancies.
- The test is not used for calculating gestational age but for assessing fetal well-being.