Liver Symposium Flashcards
How are the hepatitis viruses broken down?
A + E - enteric, self limiting
B, C, D - parenteral, ?chronic
Which groups are immunised vs HAV?
Travellers Chronic liver disease Pts Haemophiliacs Occupational exposure Gay men
What antigens are associated with HBV?
HBsAg
HBeAg
HBcAg
What antigen, when detected, tells of the presence of HBV?
HBsAg
Hepatitis surface antigen
What antigen, when detected, tells of active HBV replication?
HBeAg (e antigen)
HBV DNA
Finding HBeAg in the blood means what?
HBV is ACTIVE
Finding HBsAg in the blood means what?
Virus is PRESENT
IgM anti-HBc in blood is positive for what?
Acute infection
IgG anti-HBc is positive for what?
Chronic infection
Anti-HBe in blood is indicative of what?
Inactive virus
Hepatitis can progress to what?
Cirrhosis
End stage liver disease
What proportion of children to HBV positive mothers will have chronic HBV infection?
90%
What is the treatment for HBV?
Pegylated interferon
Oral Antivirals
What % of patients with HCV report acute jaundice?
10%
Why is HCV a more damaging virus?
RNA based
Reverse transcriptase
How is HAV diagnosed?
IgM fraction (serology)
How does HAV present?
Rapid onset illness
Jaundice
What is the treatment for HCV?
IFN-free direct-acting antivirals
PEG-IFNlambda
How does HDV survive?
In the HBV protein coat