The nurse knows that cardiopulmonary adaptation in the neonate involves five major changes; which includes the closure of which fetal cardiac structures?
Foramen ovale, ductus arteriosus, and septum.
Ductus arteriosus, ductus venosus, and pulmonary artery.
Pulmonary vein, foramen ovale, and ductus venosus.
Ductus venosus, ductus arteriosus, and foramen ovale.
The Correct Answer is D
A. The septum does not close after birth.
B. The pulmonary artery does not close after birth.
C. The pulmonary vein does not close after birth.
D. After birth, the neonate's circulatory system undergoes significant changes, including the closure of: ductus venosus (bypasses the liver in fetal circulation), ductus arteriosus (bypasses the lungs), and foramen ovale (allows blood to flow between the right and left atria).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. The circumcision area should be gently cleaned with warm water, not avoided.
B. Retraction of the foreskin is inappropriate as the foreskin is removed during circumcision.
C. Bright red bleeding is abnormal and requires immediate medical attention.
D. The yellow crust is part of normal healing and should not be scrubbed off.
Correct Answer is C
Explanation
A. While neonates are at higher risk for bleeding due to low vitamin K levels, the statement "neonates will hemorrhage without vitamin K" is too broad and not entirely accurate.
B. Breast milk is a poor source of vitamin K, which is why the injection is necessary.
C. Vitamin K is essential for the activation of clotting factors in the liver. Newborns are born with low levels of vitamin K, which is why they receive an injection to prevent bleeding.
D. Mothers do provide some vitamin K to the fetus through the placenta, but this is insufficient for the newborn after birth, necessitating the injection.
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