Hepatitis Flashcards
What does hepatitis describe?
Inflammation in the liver
What are the causes of hepatitis?
- viral hepatitis (A, B, C, D, E)
- alcoholic hepatitis
- non-alcoholic steatohepatitis (NASH)
- autoimmune hepatitis
- drug induced hepatitis (e.g. paracetamol overdose)
How many types of viral hepatitis are there?
Five types: A, B, C, D, E
What is the transmission method for Hepatitis A?
Faecal-oral
Does Hepatitis A have a vaccine?
Yes
What is the treatment for Hepatitis A?
Supportive
What is the transmission method for Hepatitis B?
Blood/bodily fluid
Does Hepatitis B have a vaccine?
Yes
What is the treatment for Hepatitis B?
- Supportive
- Antivirals
What is the transmission method for Hepatitis C?
Blood
Does Hepatitis C have a vaccine?
No
What is the treatment for Hepatitis C?
Direct-acting antivirals
What is the transmission method for Hepatitis D?
Always with Hepatitis B
Does Hepatitis D have a vaccine?
No
What is the treatment for Hepatitis D?
Pegylated interferon alpha
What are common clinical features of hepatitis?
- Asymptomatic
- Abdominal pain
- Fatigue
- Flu-like illness
- Pruritis
- Muscle and joint aches
- Nausea and vomiting
- Jaundice
What do high transaminases (ALT, AST) indicate in liver function tests?
Inflammation of liver cells
What is the most common viral hepatitis?
Hepatitis A
What is the management approach for Hepatitis B?
- Low threshold to screen at-risk patients
- Refer to GI and hepatology
- Avoid alcohol
- Contact tracing
- Test for complications
- Antivirals
- Liver transplant
What are the complications of untreated Hepatitis C?
- Liver cirrhosis
- Hepatocellular carcinoma
What is the primary autoantibody associated with Type 1 autoimmune hepatitis?
- Anti-nuclear antibodies (ANA)
- Anti-smooth muscle antibodies (anti-actin)
- Anti-soluble liver antigen (anti-SLA/LP)
What age group does Type 2 autoimmune hepatitis primarily affect?
Children, more common in girls
What are common clinical features of autoimmune hepatitis?
- Signs of chronic liver disease
- Acute hepatitis
- Amenorrhoea
What is the typical management for autoimmune hepatitis?
- High dose steroids (e.g. prednisolone)
- Other immunosuppressants (e.g. azathioprine)
- Liver transplant for end-stage disease
What indicates interface hepatitis in liver biopsy for autoimmune hepatitis?
Plasma cell infiltration
Which viral hepatitis has the worst outcomes in pregnancy?
Heptitis E
Presents similar to Hepatitis A - but carries 20% mortality
Hepatitis B serology - vaccine non-responder
HBsAg
Anti-HBsAg
Anti-HBcAg IgM
Anti-HBcAg IgG
HBsAg (-)
Anti-HBsAg (-)
Anti-HBcAg IgM (-)
Anti-HBcAg IgG (-)
Hepatitis B serology - vaccine responder
HBsAg
Anti-HBsAg
Anti-HBcAg IgM
Anti-HBcAg IgG
HBsAg (-)
Anti-HBsAg (+)
Anti-HBcAg IgM (-)
Anti-HBcAg IgG (-)
Hepatitis B serology - acute infection
HBsAg
Anti-HBsAg
Anti-HBcAg IgM
Anti-HBcAg IgG
HBsAg (+)
Anti-HBsAg (-)
Anti-HBcAg IgM (+)
Anti-HBcAg IgG (+/-)
Hepatitis B serology - chronic infection
HBsAg
Anti-HBsAg
Anti-HBcAg IgM
Anti-HBcAg IgG
HBsAg (+)
Anti-HBsAg (-)
Anti-HBcAg IgM (-)
Anti-HBcAg IgG (+)
Hepatitis B serology - previous infection, now immune
HBsAg
Anti-HBsAg
Anti-HBcAg IgM
Anti-HBcAg IgG
HBsAg (-)
Anti-HBsAg (+)
Anti-HBcAg IgM (-)
Anti-HBcAg IgG (+)