Hepatology Flashcards
Liver makes what clotting factors
5,7,9,10
Prothrombin
Fibrinogen
Portal htn causes what?
thrombocytopenia
Tests for hepatocellular injury
AST & ALT
Tests for cholestatic injury
alk phos & total bilirubin
tests for biosynthesis
Glucose
INR
Albumin
Cholesterol
Bilirubin soluble when? How much in this form?
Conjugated, 30%
Unconjugated bilirubinemia caused by?
Gilbert’s syndrome - impaired uptake/conjugation
Intravascular hemolysis
Newborns
Conjugated Hyperbilirubinemia due to?
Liver disease
Obstructive
Sepsis
Conjenital
AST/ALT normal serum levels?
30-40 U/L
Correlated AST/ALT and liver cell dmg?
POOR
AST or ALT found more in live? Which more specific for liver dmg?
ALT
If Alkaline Phosphatase is high, check what next?
Check GGT, GGT high = liver source
Cholestatic liver diseases?
Bile duct obstruction
Biliary cirrhosis
Sclerosing cholangitis
Albumin synthesized?
exclusively in liver
Albumin half life?
20 days
Albumin levels in liver disease/cirrhosis?
normal in acute, lower in cirrhosis
Albumin levels specific for liver disease?
noo
Most liver clotting factors are what dependent?
vit K
> 1000 elevation of LFT can mean (big 5)
- Drug/toxin
- Ischemic
- Acute viral Infection
- autoimmune hepatitis
- Wilson’s disease
250-1000 elevation LFT can mean?
- Drug - NSAIDS
- alpha antitrypsin
- Viral EBV/HSV
- Autoimmune Hepatitis
- Wilsons disease
Mild elevation
many things
steatosis
alcohol
Pattern of LFT abnormalities
Cholestasis Hallmark elevated AP and bilirubin
Acute liver failure defined as?
Previously normal liver, develops within 6mo
Impaired synthetic function and encephelopathy
Most important prognostic factor of Acute LIver Failure
INR
AST can be found in where else besides liver?
skeletal and cardiac muscle
Patients with preexisting liver disease/drink max dose of acetaminophen?
2g
Hepatotoxicity from converting Acetaminophen to what?
NAPQI
Acetaminophen overdose treatment?
GI decontamination with charcoal
Antidote: N-Acetylcysteine
Tylenol > NSAIDS in liver failure b/c
NSAIDS worsen underlying coagulopathy
Can interact with diuretics used to treat ascites
Transmission of HBV?
vertical
blood - mucosal, blood, c7uts