This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pediatrics
False about kernicterus is _______ 
Select and explain. 
A. No long term effect, B. Occurs with bilirubin more than 25 mg %, C. Deposition in basal ganglion, D. Opisthotonus
A: No long term effect
Answer: A: No long term effect 
Explanation: When blood level of bilirubin is more than 20 mg/dl the capacity of albumin to bind bilirubin is exceeded.in young children before the age of i year, the blood brain barrier is not fully developed and therefore free bilirubin enters the brain .It is deposited in basal ganglia,leading to mental retardation,fits,encephalitis and spasticity. Ref : TEXTBOOK OF BIOCHEMISTRY,D.M.VASUDEVAN,PG NO:252,6th edition