DSA Jaundice Flashcards
CMP measures what?
- AST/ALT
- Albumin
- BR
- ALP
Jaundice is yellow skin pigmentation caused by ________.
↑ serum bilirubin
Causes of hyperbilirubinemia (3)
- Overproduction
- Impaired uptake, conjugation or excretion of BR
- Regurgitation of UCB or CB from damaged hepatocytes or bile ducts
Bilirubin is the major breakdown product of _________, released from ___________.
- Hemoglobin
- Released from senscent erythrocytes
What are the first signs of jaundice?
Yellowing of the eyes, oral mucosa and palms
What changes will we see in:
- Hepatocellular damage => damage to hepatocytes.
- Which is MORE specific?
↑ AST/ALT
*ALT = more specific
What changes will we see in:
- Cholestatic damage => damage to bile ducts, causing ______.
-
Damage to the bile ducts =>
- cholestasis, thus, the bile cannot reach the duodenum.
- ↑ in
- ↑ alkaline phoshatase
- ↑ bilirubin
Cholestatic damage (↑ ALP and bilirubin) can cause what symptoms?
- Jaundice
- Pruritis
1st thing to do when we have jaundice is what?
Determine if:
- 1. Unconjugated/indirect or Conjugated/direct hyperbilirubinemia
- Other biochemical liver tests are abnormal
DDX
Unconjugated Hyperbilirubinemia => Jaundice
- Hemolytic syndrome (anemia or reaction)
- Gilbert Syndrome
- Crigler-Najar Syndrome
- Viral Hepattitis (can be both))
DDX
Conjugated Hyperbilirubinemia => Jaundice
- Hepatitis
- Cirrhosis
-
Obstruction
- Choledocolithiasis, Cholangitis,
- PBC, PSC,
- Budd-Chiari
- Pancreatic cancer
- Dubin-Johnson Syndrome
- Rotor syndrome
1st diagnostic studies to get in a patient with jaundice
- CBC: to look for hemolysis => anemia and thrombocytopenia (prehepatic sources that cause unconjugated hyperbilrubinemia).
-
Chemistry labs:
* AST/ALT, ALP, Total BR (+ fractionated BR to tell if indirect vs direct)
* Fractionate ALP by ordering GGT
-
Chemistry labs:
- US to see if obstructive jaundice (conjugated)
-
Jaundice due to unconjugated/indirect hyperbilirubinemia
- ↑ bilrubin production
DX???
- Hemolysis
- Hematoma
Jaundice due to unconjugated/indirect hyperbilirubinemia
- Due to impaired bilirubin uptake and storage
DX???
- Post-hep
- Gilbert
- CN Syndrome
- Drug reaction
Jaundice due to conjugated/direct hyperbilirubinemia
- Due to impaired excretion
DX???
- Dubin Johnson Syndrome
- Rotor Syndrome
Jaundice due to conjugated/direct hyperbilirubinemia
- Due to Hepatocellular dysfunction
DX???
- Hepatitis/ Cirrhosis
- Drugs/ biliary cirrhosis
Hemolyis causes ______ hyperbilirubinema.
What diagnostic test do we run and what are we looking for?
- Hemolysis => unconjugated hyperbilirubinemia
-
CBC
- Anemia and thrombocytopenia by looking for (↓) haptoglobin and (↑) LDH
What is Gilbert Syndrome?
- Pathophys
- Labs
- Treatment
- Benign, asymptomatic AR jaundice seen after fasting, post-exercise
- ↓ activity of UDGT => isolated ↑ bilirubin (unconjugated hyperbilirubinemia); however NL when not in those conditions
- No treatment needed
Gilbert syndrome is associated with reduced mortality from __________.
CV disease
CN Syndrome 1 and 2 and Gilbert => unconjugated hyperbilrubinemia
Differentiate them based on
- Inheritance
- Defect
- Liver histology
Clinical course
-
CN Syndrome Type 1
- AR
- ABSENT UGT1A1 activity
- NL
- Kills bb in neonatal
-
CN Syndrome Type 2
- AD with variable penetrance
- Decrease UGT1A1 activity
- NL
- Mild; occasional kernicterus
-
Gilbert
- AR
- Decrease UGT1A1 Acticity
- NL
- Innocous
Which indicated acute and chronic infection: IgM and IgG
- IgM = acute
- IgG = chronic
How long is chronic hepatitis?
> 3- 6 months
How can we tell is fibrosis/cirrhosis is occuring in chronic liver disease?
- Serum FibroSure
- US elastography
It is important to ask about _________, because they can cause transminitis/LF or hepatitis
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