Paper II
2025 March (Supplementary (SAY)) (2019 Scheme) · 100 marks · 180 min

Question

Assertion (A): Sulphonamide’s can cause kernicterus in newborns. Reason (R): Drugs with low plasma protein binding can cause hemolysis.

Assertion) Sulphonamide’s can cause kernicterus in newborns. Reason) Drugs with low plasma protein binding can cause hemolysis.

  • a) Both A and R are true and R is the correct explanation of A
  • c) A is true but R is false
  • b) Both A and R are true and R is not the correct explanation of A
  • d) A is false but R is true
Qxvi1 marksMCQs (A/R)

Answer

Correct answer: c) A is true but R is false

A is true — sulfonamides can cause kernicterus in newborns. R is false and describes an unrelated, incorrect mechanism: the actual reason is that sulfonamides are highly (not low) protein-bound and competitively displace bilirubin from albumin, raising free unconjugated bilirubin, which crosses the immature neonatal blood-brain barrier and deposits in the basal ganglia — kernicterus results from bilirubin displacement, not from hemolysis or low protein binding.

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