Liver 2 Flashcards
(35 cards)
name 5 causes of hepatitis
1) Viral hepatitis
2) alcoholic hepatitis
3) Autoimmune hepatitis
4) Drug induced hepatitis e.g. paracetamol
5) Non alcoholic fatty liver disease
most common Viral hepatitis worldwide?
Hepatitis A
How is Hep A transmitted
oral-faecal route
how is Hep B transmitted
direct contact with blood/bodily fluids
&
vertical transmission
antibody for Hep A that appears soon after symptoms develop
IgM
antibody for Hep A that becomes positive 5-10 days after symptoms develop & remains lifelong
IgG
what does
surface antigen for Hep B
HBsAg indicate?
active infection
what does E antigen for Hep B indicate?
marker of viral replication - implying high infectivity
what does core antibody - HBcAb indicate?
past or current infection
what does surface antibody - HBsAb indicate?
implies vaccination or past/current infection
what is given in the Hep B vaccine?
HBsAg - surface antigen for Hep B
vaccination routine for Hep B?
requires 3 doses
how does Hep D survive?
Hepatitis D can only survive in patients who also have a Hep B infection (as attaches to the HBsAg)
define cirrhosis
irreversible liver damage. Histologically there is loss of hepatic architecture with bridging fibrosis & nodular regeneration
most common cause of cirrhosis
alcohol
what are capat medusae?
engorged superficial epigastric veins
name 3 types of varices?
- capat medusae
- rectal varices
- oesophageal varices
location of oesophageal varices
located at gastro-oesophageal junction: superfical and are liable to rupture causing massive GI haemorrhage
how to diagnose causes of ascites?
ascitic tap
how is underlying cause of ascites found out?
taking a sample of fluid and measuring the SAAG (serum ascites albumin gradient)
SAAG > 11/g = transudate
SAAG < 11/g = exudate
what does SAAG > 11 g/L indicate?
transudative ascites
causes of transudative asictes?
- Heart failure
- Hypoalbuminaemia
- constrictive pericarditis
causes of hypoalbuminaemia
- liver failure
- nephrotic syndrome
- malnutrition
what does SAAG < 11 g/L indicate?
exudative ascites