The nurse is reviewing fetal circulation with a pregnant patient and explains that blood circulates through the placenta to the fetus. What is the function of ductus arteriosus?
Select one:
Lungs bypass
Brain bypass
Liver bypass
Cardiac bypass
The Correct Answer is A
a. The function of the ductus arteriosus is to bypass the lungs in fetal circulation, allowing oxygenated blood from the placenta to be shunted directly to systemic circulation.
b. Ductus arteriosus does not bypass the brain; it specifically bypasses the lungs.
c. Ductus venosus shunts blood away from the liver, not the ductus arteriosus.
d. Ductus arteriosus shunts blood away from the lungs, not the heart itself.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
a. This is a sign of severe preeclampsia.
b. This is a sign of severe preeclampsia.
c. This is a sign of severe preeclampsia.
d. Deep tendon reflexes are not affected by preeclampsia, which is a hypertensive disorder of pregnancy characterized by high blood pressure, proteinuria, and edema.
Correct Answer is C
Explanation
a. Darkening of the areola and breast tenderness are common symptoms of early pregnancy but are not associated with Chadwick's sign.
b. Softening of the lower segment of the uterus is associated with Hegar's sign, not Chadwick's sign.
c. Chadwick's sign is the violet or purplish discoloration of the vulva, vagina, and cervix due to increased blood flow during pregnancy.
d. Presence of early fetal movements is not associated with Chadwick's sign.

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