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
Explanation
Choice A rationale
The xiphoid process is not the correct anatomical landmark for measuring chest circumference in newborns. It is located at the lower end of the sternum and does not provide a consistent measurement point.
Choice B rationale
The fifth intercostal space is not used for measuring chest circumference in newborns. This space is located between the ribs and is not a reliable landmark for consistent measurements.
Choice C rationale
The sternal notch is not the correct landmark for measuring chest circumference. It is located at the top of the sternum and does not provide a consistent measurement point.
Choice D rationale
The nipple line is the correct anatomical landmark for measuring chest circumference in newborns. This method ensures that the measurement is taken at a consistent and reproducible location, providing an accurate assessment of the chest size relative to growth and development standards.
Correct Answer is D
Explanation
Choice A rationale
Microcephaly is not typically associated with an increased risk of unconjugated bilirubin and jaundice.
Choice B rationale
Polydactyly is a congenital condition involving extra fingers or toes and is not associated with an increased risk of unconjugated bilirubin and jaundice.
Choice C rationale
Caput succedaneum is a condition involving swelling of the scalp in a newborn and is not typically associated with an increased risk of unconjugated bilirubin and jaundice.
Choice D rationale
Cephalohematoma is a collection of blood between a baby’s scalp and the skull bone. It is associated with an increased risk of unconjugated bilirubin and jaundice due to the breakdown of red blood cells in the hematoma. .
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