A nurse is admitting an 8-hour-old, term newborn following a cesarean birth. The nurse observes that the newborn’s skin is yellow.
This finding indicates the newborn is experiencing a complication related to which of the following?
Physiologic jaundice.
Maternal/newborn blood group incompatibility.
Maternal cocaine abuse.
Absence of vitamin K. .
The Correct Answer is A
Choice A rationale
Physiologic jaundice is a common condition in newborns, usually appearing between the second and fourth day of life. It is caused by an increase in bilirubin, a substance produced by the breakdown of red blood cells.
Choice B rationale
Maternal/newborn blood group incompatibility can cause jaundice, but it typically appears within the first 24 hours of life.
Choice C rationale
Maternal cocaine abuse can lead to various complications in the newborn, but it does not directly cause jaundice.
Choice D rationale
Absence of vitamin K does not cause jaundice. Vitamin K is given to newborns to prevent bleeding disorders.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale
Painless vaginal bleeding at 28 weeks of gestation can be a sign of placenta previa or placental abruption, both of which are serious conditions that require immediate attention.
Choice B rationale
While vaginal spotting after a missed period could indicate early pregnancy, it is not as immediately concerning as painless vaginal bleeding in the third trimester.
Choice C rationale
Nausea and vomiting at 14 weeks of gestation are common symptoms of early pregnancy and, while uncomfortable, are not usually a medical emergency.
Choice D rationale
A cough and fever at 38 weeks of gestation could indicate an infection, which should be evaluated. However, it is not as immediately concerning as painless vaginal bleeding in the third trimester.
Correct Answer is C
Explanation
Choice A rationale
The patient’s anti-A and anti-B antibodies crossing the placenta and causing the destruction of the fetal red blood cells is related to ABO incompatibility, not Rh incompatibility.
Choice B rationale
If the patient’s blood contains the Rh factor and the newborn’s does not, Rh incompatibility would not occur. Rh incompatibility happens when the mother’s blood does not contain the Rh factor (Rh-negative), but the baby’s blood does contain the Rh factor (Rh-positive).
Choice C rationale
The patient’s blood does not contain the Rh factor, so she produces anti-Rh antibodies that cross the placental barrier and cause hemolysis of red blood cells in newborns. This is the correct reason for hyperbilirubinemia occurring with Rh incompatibility.
Choice D rationale
The patient’s blood containing anti-Rh antibodies that attack the newborn’s red blood cells is a result of Rh incompatibility, but it does not explain why hyperbilirubinemia occurs.
Hyperbilirubinemia occurs due to the breakdown of the extra red blood cells, leading to an increase in bilirubin levels.
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