Hepatology Flashcards
Steatosis =
infiltration of liver cells with fat
What pathologies can alcoholism lead to in the liver
Steatosis, fibrosis and cirrhosis
CAGE questionnaire
Do you feel you should cut down?
Do you feel annoyed when people criticize your drinking?
Do you feel guilty?
Do you ever have an eye opener?
Investigations in liver cirrhosis
LFT - esp GGT Albumin (decreased) coagulation FBC - increased MCV Platelets reduced U&Es IgA increased Increased cholestrol USS - liver Biopsy, if needed for extent of damage
clinical features of Wernicke’s encephalopathy
Confusion
Opthalmoplegia
ataxia
Oral thiamine should be given to?
Harmful or dependent drinkers
Blood tests for hepatocellular integrity
ALT/ AST
LSH - raised in liver mets and obstructive jaundice
GGT
Iron / ferritin - raised in liver disease
Jaundice can be divided into 3 forms
Pre hepatic
Intrahepatic
Post hepatic
Prehepatic jaundice is due to?
Haemolysis
Intraheptatic jaundice due to?
hepatocellular damage
In which type of jaundice is there bilrubinuria?
Intra and post
Post hepatic jaundice is due to?
Cholestasis
Disorders of excretion blood tests (cholestasis)
Bilirubin
ALP
Copper raised
Cholestrol
(all increased in cholestasis)
Tests for the synthetic function of the liver
Coagulation - prothrombin time and INR
liver screen
albumin
Which clotting factors are produced by the liver?
1,2,5,7,11 and 13
what tests are done in a liver screen?
Viral hepatitis CMV and EBV Autoantibodies Ig Ferritin Copper
USS of the liver
Imagining + option for the liver
USS CT MRI Angiography - vascular supply Nuclear medicine Liver biopsy
Define acute liver failure
Acute liver injury (reduction in hepatic function <6m due to hepatocellular death)
Causes increased INR and hepatic encephalopathy
3 main causes of acute liver failure
Infections
Drugs
Malignancy
Examples of infections causing acute liver failure
Hep A, B, E
Immunocompromised - EBV / CMV
Foreign travel - dengue fever
Drugs causing acute liver failure
Paracetamol
Cocaine
Iron overdose
Amoxicillin Rifampicin Isoniazid Phenytoin Valproate
“Other” causes of acute liver failure
AI
Wilsons
Ischaemia
Pregnancy related - acute fatty liver / HELLP
Important questions in acute liver failure hx
Recent new medication Travel hx Unprotected sexual contact IVUDs Prodromal illness
Blood investigations in acute liver failure
FBCs U&Es LFTs Albumin Coagulation Copper Glucose ABG Hepatitis screen Toxicology Auto antibodies Group and save Blood culture
Imaging in acute liver failure
USS
CT
Immediate treatment in acute liver failure
ABC IV access and fluid resuscitation N-acetylcysteine IV Vitamin support Discuss with local transplant centre Transfer to ICU if required
Monitor
INR - 6 hrly
Urine output and creatinine
Commonest mode of death in acute liver failure
Sepsis
Hepatic encephalopathy mainly due to the build up of?
Ammonia
Define fulimant hepatic failure
Sudden onset liver failure with hepatic encephalopathy within 2 weeks in a person with no underlying liver pathology
Precipitating event for hepatic encephalopathy
Infection GI bleed - high protein abs Dehydration Alcohol binge Metabolic disarray TIPS
Microbiology in hepatic encephalopathy
Blood cultures
Ascites tap
Urine dip
Imaging in hepatic encephalopathy
USS
CT
TIPS =
transjugular intrahepatic portosystemic shunt
How to acutely treat hepatic encephalopathy
ABC
Fluids
Antibiotics
Treat the cause
Bloods in hepatic encephalopathy
FBC U&E LFT Coag CRP ABG Glucose Arterial ammonia
How to work out units
% x ml / 1000 x no. of days
Main cause of primary liver cancer
Hepatocellular carcinoma (75%) and cholangiocarcinoma
Two important diagnostic tests in liver cancer
Abdo CT and alpha feto protein
Main risk factor in cholangiocarcinoma
Primary sclerosing cholangitis is the main risk factor
Markers elevated in cholangiocarcinoma
CA 19-9, CEA and CA 125 are often elevated
Autoantibodies in autoimmune hepatitis
anti-smooth and ANA
Other autoimmune diseases linked to autoimmune hepatitis
SLE
thyroid disease
pernicious anaemia
Invasive test in autoimmune hepatitis
liver biopsy
1st line management for autoimmune hepatitis
prednisolone
Primary biliary cirrhosis is?
autoimmune distruction of the lobular ducts
primary sclerosing cholangitis is?
chronic liver disease leading due to fibrosis and inflammation leading to cholestasis and cirrhosis.
primary sclerosing cholangitis associated with which group of conditions?
IBD
autoantibodies found in primary sclerosing cholangitis?
p-ANCA
cancer linked to primary sclerosing cholangitis?
cholangiocarcinoma
Decompensated cirrhosis is?
Cirrhosis with development of one of…
ASCITES
BLEEDING
Conscious level - decreased
Causes of cirrhosis
Alcohol Hepatitis Genetic e.g. Wilsons Drugs e.g. Methotrexate Autoimmune
Hand signs of cirrhosis
clubbing
leuconychia
dupuytren’s contracture
palmar erythema
Face / neck signs of cirrhosis
jaundice
Raised JVP
Chest signs of cirrhosis
Spier naevi
gynacomastia
Abdo signs of cirrhosis
spleno / hepatomegaly
ascites
caput meduse
Imaging for cirrhosis
US
CT
MRCP/ ERCP
Conservative treatment for cirrhosis
alcohol abstinence
nutrition
peripheral signs of liver disease
brusing - poor clotting
malnourished
oedmea
Causes of portal hypertension
Prehepatic
Hepatic
Post-hepatic
Splenic / portal / mesenteric vein thrombosis
Extrinsic compression
Cirrhosis
Hepatitis
Cardiac failure
Hepatic vein thrombosis
Shunting of blood from the portal to systemic system leads to?
hepatic encephalopathy
Clinical features of portal hypertension
Ascites
Bleeding
Decreased conscious level
Imaging used to diagnose hepatic / portal vein thrombosis
US
Medical management in portal hypertension
anti-coag for thrombosis
beta blockers
TIPS
Surgical management in portal hypertension
shunt
Complications of portal hypertension
varices
ascites
splenomegaly
Presentation of ruptured varices
Haemodynamically unstable
Haematemesis
Melaena
May be signs of chronic liver disease e.g. jaundice, ascites, encephalopathy
Blood tests in ruptured varices (medical emergency)
ABG FBC LFTS UandEs Clotting Group and save - order
What should be given in an upper GI bleed due to liver decompensation
Vit K
Platelets
Broad spectrum AN
1st line intervention in varices rupture
Endoscopy and banding
Those with cirrhotic livers should be screened for what?
OGD for development of varices
Those with cirrhotic livers should be screened for what?
OGD for development of varices
Transudate protein content
<25g/L
Exudate protein content
> 25g/L
Best guide as to whether ascites due to portal hypertension
SAAG - Serum ascitic albumin gradient
<11g/L
Causes of transudate ascites
Liver failure
Renal failure
Causes of exudate ascites
Infection
Malignancy
Pancreatitis
On examination in ascities
swelling
full flanks
shifting dullness
Fluid aspirate meaning
Normal
Bilirubin
Infection
Malignancy
Straw coloured
Orange
Turbid
Blood
Conservative treatment in ascites
monitor fluid input and output
reduce sodium input
Medical treatment for ascites
diuretics
Invasive treatment for ascites
Drain the fluid
TIPS
Serious complication of ascites
Spontaneous bacterial peritonitis
Causative organisms of spontaneous bacterial peritonitis
E.Coli
Klebsiella
Streptococcus
Main investigation to diagnose spontaneous bacterial peritonitis
Gram stain and cell count of ascitic tap
Medical treatment for spontaneous bacterial peritonitis
IV 5 day AB - Cefotaxime or Tazocin
First line in hepatic encephalopathy
latculose - lactulose is thought to work by promoting the excretion of ammonia and increasing the metabolism of ammonia by gut bacteria
Gilberts syndrome
Genetic syndrome of mild unconjugated hyperbilirubinaemia
Liver function is otherwise normal
Causes of liver damage / decompensation
Pre heptatic
- haemolytic anaemia e.g. sickle cell or autoimmune
- Gilberts syndrome
Hepatic
- Hepatitis - infective / autoimmune
- Alcohol
- Fatty liver disease
- Haemochromatosis / Wilsons
- Primary biliary sclerosis
Post / systemic
- Gall bladder disease
- Pancreatic cancer
- Congestive heart failure
Associated symptoms with hepatomegaly
Nausea Puritis Abdo distention Weight loss Pyrexia Jaundic Dark urine / pale stool
FM Q in patient with hepatomegaly
Sickle cell
Carcinoma
Autoimmune disease
Social Q in patient with hepatomegaly
Travel hx
Alcohol consumption
Tattoos / needles / risky sexual behaviour
Causes of hepatomegaly - massive
Massive
“MR HAM”
metastases right heart failure hepatocellular cancer alcoholic liver disease myeloproliferative disorders
Causes of hepatomegaly - moderate
Moderate
same as massive + “HIFI”
haematological disease
iron (haemachromatosis)
fatty liver
infiltration
Causes of hepatomegaly - mild
hepatitis
biliary obstruction
HIV