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. Placing the baby under a warmer can be done if skin-to-skin is not effective.
B. CPR is unnecessary as the newborn’s vital signs are within normal limits for this age.
C. Skin-to-skin contact is the best initial intervention to stabilize temperature and promote bonding, which may also regulate respiratory and heart rates.
D. Oxygen is not indicated as the respiratory rate and oxygenation appear adequate.
Correct Answer is {"dropdown-group-1":"B","dropdown-group-2":"C"}
Explanation
Prolactin: This hormone, released by the anterior pituitary gland, stimulates the alveolar cells in the mammary glands to produce breast milk. Prolactin levels increase significantly after birth in response to the infant's suckling.
Oxytocin: Released by the posterior pituitary gland, oxytocin triggers the contraction of the myoepithelial cells surrounding the alveoli, causing milk to be ejected from the ducts, a process known as the let-down reflex.
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