This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Most common cause of pathological jaundice on first day of life is: March 2008 
Select and explain. 
A. Physiologic, B. Biliary atresia, C. Rh incompatibility, D. Sepsis
C: Rh incompatibility
Answer: C: Rh incompatibility 
Explanation: Ans. C: Rh Incompatibility Hyperbilirubinemia in the first week of life is usually of the indirect variety. Causes of hyperbilirubinemia appearing within 24 hours of age: Hemolytic disease of newborn: Rh, ABO and minor group incompatibility Infections: intrauterine viral, bacterial; malaria G-6PD deficiency