AIIMS Raipur NO - 2019 (Shift-2)
Child Health Nursing (Pediatrics)
Easy
Brain damage caused by accumulation of abnormal levels of toxic bilirubin in the brain is known as?
Appeared in: AIIMS Raipur NO - 2019 (Shift-2)
Explanation
- Kernicterus, also known as bilirubin encephalopathy, is the specific term for brain damage caused by the deposition of unconjugated (indirect) bilirubin in the brain tissue of a newborn.
- This occurs when bilirubin levels in the blood become excessively high (severe hyperbilirubinemia), allowing the fat-soluble bilirubin to cross the blood-brain barrier.
- The condition primarily affects the basal ganglia and brainstem nuclei, leading to neurotoxicity and potentially permanent neurological damage.
- Clinical signs progress from subtle (lethargy, hypotonia, poor suck) to severe (opisthotonos, seizures), and long-term sequelae include cerebral palsy, hearing loss, and developmental delays.
Why Other Options Were Wrong
- Option A: Jaundice is the clinical sign (yellowing of the skin and sclera) of hyperbilirubinemia. It is a symptom, not the brain damage itself.
- Option B: Isoimmunisation (e.g., Rh or ABO incompatibility) is a condition that can cause hemolysis, leading to a rapid increase in bilirubin. It is a major risk factor or cause for the hyperbilirubinemia that can lead to kernicterus, but it is not the brain damage itself.
- Option D: A cephalohematoma is a collection of blood under the periosteum of a newborn's skull. The breakdown of this blood can increase the bilirubin load in the body, acting as a risk factor for jaundice and kernicterus, but it is not the brain injury caused by bilirubin.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Complications of Neonatal Hyperbilirubinemia as background academic context rather than a clinical decision trigger.
- Nurses play a vital role in preventing kernicterus through systematic screening of all newborns for jaundice before discharge, typically using a transcutaneous bilirubinometer or serum testing.
- Accurate assessment and plotting of bilirubin levels on an hour-specific nomogram (like the Bhutani nomogram) is essential to identify infants who are in high-risk zones and require intervention.
- Nursing care for an infant under phototherapy includes ensuring maximum skin exposure, protecting the eyes, monitoring temperature, and promoting hydration to facilitate bilirubin excretion.
How to Approach the Question
- First, analyze the question stem to identify the key concepts. The question asks for the specific term for 'brain damage' caused by 'toxic bilirubin levels'.
- Next, evaluate each option based on this specific definition.
- Consider 'Jaundice'. This is the yellow skin color, a symptom, not the brain damage itself. Eliminate this option.
- Consider 'Isoimmunisation'. This is a cause of red blood cell breakdown, which leads to high bilirubin, but it's not the brain damage. Eliminate this option.
- Consider 'Cephalohematoma'. This is a scalp bleed that can increase bilirubin levels, making it a risk factor, but it is not the brain damage. Eliminate this option.
- Finally, consider 'Kernicterus'. Recall or look up the definition. Kernicterus is the precise term for bilirubin-induced encephalopathy or brain damage. This matches the question perfectly.
Concept Tested & Keywords
- Concept Tested: Complications of Neonatal Hyperbilirubinemia
- Stem keywords: Brain damage, bilirubin, toxic levels, newborn
- Lead-in keywords: known as
- Negative lead-in flag: false
Question ID
QUIEu4eP4KGLiTd0NgKdjN
Reference Book
E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 1121-1123
Practise the full AIIMS Raipur NO - 2019 (Shift-2)
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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