The birth attendant has ordered an ultrasound for a pregnant woman to determine the gestational age of the fetus. What other information may be obtained by this test? Select all that apply
A) Location of the placenta
B) Oxygen supply to fetus
C) Fetal heart rate related to fetal activity
D) Gender of the fetus
E) Fetal neural tube defects
F) Fetal head size
A, D, F
Feedback:
An ultrasound scan can determine gestational age, fetal head size, location of the placenta, and some fetal abnormalities. It can identify multiple pregnancies and, in some cases, it can also determine the sex of the fetus. The oxytocin challenge test (OCT) provides information on how well the placenta is supplying oxygen to the fetus. The nonstress test (NST) provides information on the fetal heart rate in response to fetal activity. Maternal serum a-fetoprotein (MSAFP) levels are increasingly used as a screening tool to detect the presence of fetal neural tube defects and open abdominal wall defects early in pregnancy.
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