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 A
Explanation
a. Variable decelerations occur due to umbilical cord compression, typically when the cord is compressed during contractions or when the cord is wrapped around the fetal neck or body.
b. Early decelerations are typically related to fetal head compression and are not associated with variable decelerations.
c. Late decelerations are caused by uteroplacental insufficiency and are not associated with variable decelerations.
d. IV narcotic analgesics can cause late decelerations, not variable decelerations.
Correct Answer is D
Explanation
a. This is not the correct diagnosis for this situation.
b. This is not the correct diagnosis for this situation.
c. This is not the correct diagnosis for this situation.
d. The sudden onset of increased contraction frequency, dark red vaginal bleeding, and severe abdominal pain are characteristic of placental abruption.
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