Neonatology MCQ- Q49

 

PEDIATRIC MCQ  SECTION  Neonatology -   Q49

 

49. Phototherapy works by which of the following mechanisms?

A. Direct conjugation of bilirubin molecule which is then excreted by the liver.
B. Isomerization of the bilirubin molecule to lumirubin which is water soluble and then can be excreted by kidneys.
C. Oxidation of bilirubin molecule to small water-soluble molecules
D. Induction of glucoronyl transferase Which then conjugates bilirubin and helps in excretion
E. Reduction by induction pathway to produce soluble molecules.

ANSWER= Ans B
Explain:- Phototherapy acts by isomerization the unconjugated molecules are converted to water-soluble lumirubin which is then excreted by kidneys and via stool

                          

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