Which of the following statements accurately describes a characteristic of the newborn immune system?
Newborns are born with fully developed immune responses capable of independently fighting infections from birth.
Newborns have a mature gut microbiome that supports their immune system immediately after birth.
Newborns rely solely on their innate immune system without any contribution from maternal antibodies.
Newborns receive passive immunity through the placenta and colostrum, but their own immune system is not fully functional until several months of age.
The Correct Answer is D
Choice A rationale
Newborns are not born with fully developed immune responses. Their immune system is immature and continues to develop after birth. They rely on maternal antibodies for initial protection.
Choice B rationale
Newborns do not have a mature gut microbiome immediately after birth. The gut microbiome develops over time and is influenced by factors such as breastfeeding and exposure to the environment.
Choice C rationale
Newborns do not rely solely on their innate immune system. They receive passive immunity from maternal antibodies transferred through the placenta and colostrum, which provides initial protection against infections.
Choice D rationale
Newborns receive passive immunity through the placenta and colostrum, but their own immune system is not fully functional until several months of age. This passive immunity helps protect them from infections during the early months of life.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["D","F","G","H"]
Explanation
Choice A rationale
Flexion of arms is a normal finding in newborns and does not indicate respiratory distress.
Choice B rationale
Caput succedaneum is a common condition where the scalp swells due to pressure during delivery. It does not indicate respiratory distress.
Choice C rationale
A heart rate of 158 bpm is within the normal range for newborns and does not indicate respiratory distress.
Choice D rationale
A respiratory rate of 66/min is above the normal range (30-60 breaths per minute) and indicates respiratory distress.
Choice E rationale
Acrocyanosis is common in newborns and does not indicate respiratory distress.
Choice F rationale
Subcostal retractions indicate increased work of breathing and are a sign of respiratory distress.
Choice G rationale
Nasal flaring is a sign of respiratory distress as it indicates increased effort to breathe.
Choice H rationale
Grunting is a sign of respiratory distress as it indicates difficulty in maintaining lung expansion.
Correct Answer is B
Explanation
Choice A rationale
Erythema toxicum is a common, benign rash seen in newborns. It appears as red patches with small white or yellow pustules in the center. It is not characterized by small raised pearly white spots on the nose and chin.
Choice B rationale
Milia spots are small raised pearly white spots that commonly appear on the nose, chin, and cheeks of newborns. They are caused by trapped keratin and are harmless, usually resolving on their own within a few weeks.
Choice C rationale
Mongolian spots are flat, blue-gray patches commonly found on the lower back and buttocks of newborns, especially those with darker skin. They are not raised and do not appear on the nose and chin.
Choice D rationale
Epstein’s pearls are small white or yellow cysts found on the gums or roof of the mouth in newborns. They are not found on the nose and chin. .
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