The nursing instructor is illustrating the circulatory flow between the mother and fetus.
The instructor determines the session is successful when the class correctly chooses which structure with which route.
The one umbilical vein carries oxygen-rich blood to the fetus from the placenta.
The two umbilical arteries carry waste products from the placenta to the fetus.
The two umbilical veins carry waste products from the fetus to the placenta.
The one umbilical artery carries oxygen-rich blood to the fetus from the placenta.
The Correct Answer is A
The umbilical vein carries oxygen-rich blood to the fetus from the placenta.
The umbilical vein is an important part of fetal circulation and carries oxygenated blood from the placenta into the growing fetus.
Choice B is incorrect because the two umbilical arteries carry deoxygenated blood from the fetus to the placenta23.
Choice C is incorrect because there are not two umbilical veins, but only one12.
Choice D is incorrect because it is not the one umbilical artery that carries oxygen-rich blood to the fetus from the placenta, but rather the one umbilical vein14.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The MSAFP test measures the levels of alpha-fetoprotein (AFP) in the mother’s body.
AFP is a protein produced by the baby during pregnancy.
Too much AFP in the mother’s body may indicate that the baby is at risk of a neural tube defect, like spina bifida.
Choice A is incorrect because this test does not screen for gestational diabetes.
Choice B is incorrect because this test does not screen for fetal maturity.
Choice D is incorrect because this test does not screen for ABO incompatibility.
Correct Answer is A
Explanation
This is a diagnostic procedure that involves inserting a needle into the uterus to obtain a sample of amniotic fluid for testing.
This procedure can cause a small amount of fetal blood to enter the maternal circulation, which can trigger an immune response in Rh-negative women carrying Rh-positive fetuses.
RhoGAM is a medication that contains antibodies against the Rh factor and prevents the mother from developing her own antibodies that could harm the fetus or future pregnancies.
RhoGAM should be given within 72 hours after amniocentesis to Rh-negative women who are not already sensitized2.
Choice B.
Biophysical Profile is incorrect, as this is a noninvasive diagnostic procedure that involves ultrasound and fetal heart rate monitoring to assess fetal well-being.
This procedure does not cause fetomaternal hemorrhage and does not require RhoGAM administration.
Choice C.
The contraction stress test is incorrect, as this is a noninvasive diagnostic procedure that involves inducing uterine contractions and monitoring fetal heart rate response to assess fetal oxygenation.
This procedure does not cause fetomaternal hemorrhage and does not require RhoGAM administration.
Choice D.
A nonstress test is incorrect, as this is a noninvasive diagnostic procedure that involves monitoring fetal heart rate and movement to assess fetal well-being.
This procedure does not cause fetomaternal hemorrhage and does not require RhoGAM administration.
Therefore, choice A is the best answer to this question.
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