GI Clin Med liver Flashcards
Hepatitis
Inflammation of the liver
What can cause hepatitis
Hep A, B, C, D, E
Drugs and toxic agents
*clinical manifestations may be similar regardless of cause
True liver function tests
PT/INR
Albumin
Cholesterol
*alt/ast and alp and bilirubin ldh and get can come from other places “liver tests”
What causes mile elevations in ALT
Chronic hep b, c, d
Acute viral hep (A-E, EBV, CMV)
Steatosis/steatohepatitis
Hemochromatosis
Medications/toxins
Autoimmune hepatitis
Alpha-1 antitrypsin defiency
Wilson disease
Celiac disease
Glycogenic hepatopathy
Mild elevations AST
Alcohol related liver injury
Nonhepattic mild elevations
Strenuous exercise
Hemolysis
Myopathy
Thyroid disease
Macro-ast
Severe elevations ast/alt
Acute viral hepatitis a-e Medications/toxins Ischemic hepatitis Wilson Acute bile duct obstruction Acute budd chairi syndrome Hepatic artery ligation
Non hepatic sources bilirubin
Rbc
Non hepatic sources ast
Skeletal msucles, cardiac muscle, rbc
Non hepatic sources alt
Skeletal muscle, cardiac muscle, kidney
Nonhepatic source led
Heart, rbc,
Non hepatic source alkaline phosphatase
Bone, first trimester placenta, intestines
Hepatocellular disease-primary injury to hepatocytes
Ast, alt higher than alkaline phosphatase
Elevated direct bilirubin
Elevated or normal indirect bilirubin
Associated liver enzymes often elevated
Cholestatic liver disease-injury to bile ducts
Alkaline phosphatase higher than AsT, ALT
Elevation of alkaline phosphatase with near normal ast, alt levels
Normal direct bilirubin
Elevated indirect
No abnormal liver tests; no anemia, onset in late adolescence, fasting makes bilirubin rise
Hemolysis
Normal direct bilirubin
Elevation represents more than 90% of total bilirubin
Anemia usual; increased reticulocyte count, normal liver enzyme levels (LDH may be up)
Overall hepatocellular
ALT >AST
Both up
Cholestasis
ALP up(if isolated consider bone involvement) Check get
Elevated alp Failure of bile to reach duodenum Jaundice and pruritus Pure cholstatsis Oral contraceptives, anabolic steroids sex hormones
Non inflammatory drug induced cholestasis
Anabolic steroids, azathripine, cyclosporine, estrogens
Inflammatory drug induced cholestasis
Amoxicillin
Clinical presntation viral hepatitis
Malaise, nausea, vomiting, diarrhea, low grade fever followers by dark urging, jaundice and tender hepatomegaly; may be subclinical and detected on basis of elevated aspartate and alanine levels
Hep a
Ss RNA hepatovirus (picornavirus family0
Prodrome hep a
Anorexia, nausea, vomiting, malaise, aversion to smoking
Duration hep a
2-3 weeks
Complete clinical 9 weeks recovery 6-12 months no clinical sequelae
Risk factor hep a
1 international travel contaminated water or food, including inadequately cooked shellfish