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Questions and Answers
In obstructive jaundice, which of the following is true about bilirubin?
In obstructive jaundice, which of the following is true about bilirubin?
- Unconjugated bilirubin rises
- Bilirubin remains within normal range
- Both conjugated and unconjugated bilirubin rise
- Conjugated bilirubin rises (correct)
What is the normal range for serum bilirubin?
What is the normal range for serum bilirubin?
- 0.3-1.0 mg/dL (correct)
- 1.0-3.0 mg/dL
- 3.0-5.0 mg/dL
- 5.0-7.0 mg/dL
In which type of jaundice does unconjugated bilirubin rise?
In which type of jaundice does unconjugated bilirubin rise?
- Hepatocellular jaundice
- Hemolytic jaundice (correct)
- Mixed jaundice
- Obstructive jaundice
Which enzyme is more specific for liver damage?
Which enzyme is more specific for liver damage?
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What does the presence of urobilinogen in urine indicate?
What does the presence of urobilinogen in urine indicate?
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Study Notes
Bilirubin and Jaundice
- In obstructive jaundice, conjugated bilirubin is elevated in the blood.
- The normal range for serum bilirubin is 0.2-1.2 mg/dL.
- Unconjugated bilirubin rises in hemolytic jaundice.
- Alanine transaminase (ALT) is a more specific enzyme for liver damage compared to aspartate transaminase (AST).
- The presence of urobilinogen in urine indicates hemolytic jaundice or liver damage.
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