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Questions and Answers
What is typically associated with excess urobilinogen in urine and absent bilirubin?
What is typically associated with excess urobilinogen in urine and absent bilirubin?
- Hemolysis (correct)
- Cholecystitis
- Cholangitis related to obstruction
- Acute liver failure
Increased levels of urobilinogen can be observed in which of the following conditions?
Increased levels of urobilinogen can be observed in which of the following conditions?
- Hypertension
- Megaloblastic anemias (correct)
- Liver cirrhosis
- Chronic kidney disease
What causes dark-colored stools in jaundiced patients?
What causes dark-colored stools in jaundiced patients?
- Presence of urobilinogen in urine
- Excess bilirubin in urine
- Excretion of excess urobilinogen in feces (correct)
- Increased fat absorption
What can lead to increased urinary urobilinogen levels in a patient?
What can lead to increased urinary urobilinogen levels in a patient?
Which condition is NOT typically associated with increased urinary urobilinogen?
Which condition is NOT typically associated with increased urinary urobilinogen?
Flashcards
Urobilinogen and bilirubin in urine
Urobilinogen and bilirubin in urine
Increased levels of urobilinogen in urine, along with the presence of bilirubin, may indicate an infection like cholangitis associated with an obstruction.
Urobilinogen without bilirubin
Urobilinogen without bilirubin
Excess urobilinogen in urine without bilirubin is usually a sign of hemolysis, where red blood cells are being broken down.
Causes of Hemolysis
Causes of Hemolysis
Hemolysis can occur due to rapid destruction of red blood cells (acute lysis) or the breakdown of red blood cell precursors in the bone marrow (megaloblastic anemias).
Urobilinogen and Bleeding
Urobilinogen and Bleeding
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Dark Stools and Urobilinogen
Dark Stools and Urobilinogen
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Study Notes
Infection and Urobilinogen in Urine
- Cholangitis with obstruction leads to high urine urobilinogen and bilirubin excretion.
- High urine urobilinogen with absent bilirubin suggests hemolysis.
- Hemolysis, including acute erythrocyte lysis or bone marrow erythrocyte precursor destruction (megaloblastic anemias), increases urine urobilinogen.
- Bleeding into tissues and subsequent bilirubin excess also increases urinary urobilinogen.
Dark Stools and Urobilinogen
- High urobilinogen excretion also causes dark-colored stools.
Fever, Dehydration, and Urine Urobilinogen
- Fever with dehydration and concentrated urine can increase urinary urobilinogen.
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