06-02-2008, 05:39 AM
A full-term blood group A“negative boy is born to a blood group O“negative mother. Shortly after birth, he develops jaundice with increasing bilirubin levels. Phototherapy decreases the jaundice within 24 hours and the blood total bilirubin levels decrease. Which of the following best explains the mechanism for the decrease in bilirubin levels in this patient?
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A. Unconjugated bilirubin in the skin is converted to conjugated bilirubin in the skin and excreted in the bile
B. Unconjugated bilirubin in the skin is converted to the water-soluble biliverdin
C. Unconjugated bilirubin in the skin is converted to water-soluble dipyrroles and excreted in the urine
D. Unconjugated bilirubin is mobilized out of the skin and excreted in the urine
Click on the circle next to your answer choice
A. Unconjugated bilirubin in the skin is converted to conjugated bilirubin in the skin and excreted in the bile
B. Unconjugated bilirubin in the skin is converted to the water-soluble biliverdin
C. Unconjugated bilirubin in the skin is converted to water-soluble dipyrroles and excreted in the urine
D. Unconjugated bilirubin is mobilized out of the skin and excreted in the urine