A new parent asks you why their newborn has jaundice.
How would you explain?
Jaundice is caused by the newborn having too many red blood cells that are breaking down quickly.
It is a sign of liver failure due to an underlying metabolic disorder.
The baby is not drinking enough formula or breast milk, which prevents the excretion of bilirubin.
The newborn’s immune system is attacking its own red blood cells, causing elevated bilirubin.
The Correct Answer is A
Choice A rationale
Neonatal jaundice, or hyperbilirubinemia, is common and frequently results from a higher-than-normal red blood cell mass in the newborn and a shorter lifespan of these cells. This rapid breakdown releases excess unconjugated bilirubin, which the newborn's immature liver cannot process and excrete quickly enough, leading to its accumulation in the skin and sclera.
Choice B rationale
Although severe or prolonged jaundice can indicate a serious underlying disorder, such as liver failure or biliary atresia, most physiologic jaundice is a transient, normal occurrence due to liver immaturity, not a sign of immediate organ failure. Pathological jaundice requires a thorough investigation to rule out metabolic or liver pathology.
Choice C rationale
Adequate intake of breast milk or formula is crucial because it promotes gastrointestinal motility and the passage of meconium, which contains bilirubin. Delayed feeding can lead to increased enterohepatic recirculation of bilirubin, worsening jaundice, but the underlying cause is usually the rapid red blood cell breakdown, not solely a lack of feeding.
Choice D rationale
Jaundice caused by the newborn's immune system attacking red blood cells, known as hemolytic disease of the newborn (e.g., ABO or Rh incompatibility), is a type of pathological jaundice. While this does cause elevated bilirubin, it is not the explanation for the typical, common physiologic jaundice seen in most healthy newborns.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale
While ataxia, which is impaired coordination, and seizures may occur in children with brain tumors due to pressure or irritation of specific brain regions, they are generally less consistently reported as the earliest or most frequent hallmark symptoms compared to symptoms related to increased intracranial pressure. The primary location of the tumor dictates the presence of these focal neurological signs, making them variable.
Choice B rationale
Poor fine and gross motor control can be observed if the tumor is located in the cerebellum or motor cortex, but this is a non-specific finding that could be related to many other pediatric neurological or developmental disorders. The gradual onset of motor changes often makes them less reliable as the hallmark sign compared to acute symptoms of pressure.
Choice C rationale
Fever and irritability are common but highly non-specific symptoms in pediatrics, frequently associated with routine infections. While some brain tumors may cause fever, and irritability is a sign of general discomfort or pain, these are rarely the primary indicators pointing definitively toward a brain tumor diagnosis.
Choice D rationale
Headache and vomiting, especially when occurring in the morning or upon waking, are classic symptoms indicating increased intracranial pressure (ICP), which is a common consequence of a growing mass in the fixed space of the skull. The change in position from lying down increases ICP, leading to these characteristic symptoms.
Correct Answer is D
Explanation
Choice A rationale
While voiding is expected, the normal range for the first void is typically within the first 24 to 48 hours of life. A newborn not voiding at exactly 24 hours warrants continued monitoring, but it is not an immediate emergency unless there are other signs of distress or an obvious obstruction.
Choice B rationale
Acrocyanosis is a normal, transient condition in the newborn characterized by a bluish discoloration of the hands and feet due to sluggish peripheral circulation. It is common for up to 24 hours after birth and does not require immediate intervention, only ongoing assessment to ensure central color is pink.
Choice C rationale
Most healthy newborns pass meconium, the first stool, within the first 24 hours of life, with almost all passing it by 48 hours. A lack of meconium passage at 24 hours requires investigation for potential intestinal issues, such as Hirschsprung's disease or meconium plug, but an elevated temperature signals more acute distress.
Choice D rationale
A temperature of 100.5 degrees F (38.1 degrees C) in a newborn, which is above the normal range (typically 97.7 to 99.5 degrees F or 36.5 to 37.5 degrees C), is a serious finding. Newborns are susceptible to rapid temperature changes, and hyperthermia can indicate sepsis, dehydration, or environmental issues requiring immediate assessment and intervention.
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