Diseases of the liver Flashcards
there is an increase in
- the prevalence of liver disease mortality
what are the two types of liver disease presentation
- acute liver failure - rare
- chronic liver disease/cirrhosis - common
What can cause acute liver failure
- Drugs - paracetamol
- infections - hepatitis A or B
- toxins
- ischaemic
- metabolic
- vascular
What can cause chronic liver disease/cirrhosis
- alcohol
- viral hepatitis B or C
- non alcoholic fatty liver disease
- autoimmune hepatitis
- primary biliary cirrhosis
- primary sclerosing cholangitis
- haemochromatosis and wilsons disease
How long can liver disease be asymptomatic for
20-40 years
How long can the symptomatic phase of liver disease be for
1-5 years
what can be done in the asymptomatic phase of liver disease
Can do prevention and treatment
assess risk of liver disease
- life-stage approach
- genetic
- environmental
- behaviour risks
Early identification of liver disease
- role of tests
- find treatable disease
monitoring and management
- review for progression
- agree and use the pathways for intervention repetition
what can you do in terms of treatment for the symptomatic phase of liver failure
- transplant
- if that person is not suitable for a transplant than you treat the symptoms or do palliation
What are the complications in the symptomatic phase of liver failure
- Ascites
- haemorrhage
- encephalopathy
- HCC
- jaundice
name the types of acute liver failure
Acute liver failure = occurs suddenly in the previously healthy liver
- hyperacute - 7 days or less
- acute - 8-12 days
- subacute - 2-26 weeks
Name the diseases that alcohol can cause
- hypertension
- coronary heart disease
- ischaemic stroke
- haemorrhagic stroke
- oral pharyngeal cancer
- pancreatitis
- liver disease
describe the natural history of alcohol induce liver injury
- starts with fatty liver
- progresses to steatohepatitis - fat and inflammation
- the progresses to fibrosis and cirrhosis
- then can progress to hepatoceullar cancer
What does the extent of liver damage by alcohol depend on
- volume of alcohol
- duration of alcohol liver consumption
What do you have to have regularly when you get cirrhosis
regular 6 months ultrasound scans when you have cirrhosis
What is the three HIT hypothesis for alcohol related liver disease
Idea that alcohol mediated injury
- can trigger a metabolic insult
- you are more at risk of a metabolic insult from alcohol if you have obesity and insulin resistance (diabetes) - there is an inflammatory cascade
- translation of lipid signal in inflammation - chemokines, cytokines, hepatic stellate ceiss, kupffer cells, endothelial cells and gut microbiota; DAMPS and PAMPs - there is also an increased risk if you have a genetic predisposition
- genetic disturbance of lipid metabolism
What genes lead to a genetic disturbance of lipid metabolism and are genes that are associated with steatosis (increased risk for alcohol related liver disease)
- PNPLA3
- TM6SF2
- MBOAT7
How do you manage alcohol related liver disease
- Avoidance of alcohol - address alcohol addiction
- Glucocorticoids often used during acute episodes of alcoholic hepatitis - Maddrey’s criteria is used during acute episodes to determine who would benefit
Name the types of alcohol withdrawal syndromes and the time frame in which they happen in
- Minor withdrawal = 6 to 36 hours
- Seizures = 6-48 hours
- alcoholic hallucinosis = 12-48 hours
- delirium tremens = 48-96 hours
Describe what happens in - minor withdrawal - seizures - alcohol hallucinosis - delirium tremens for alcohol withdrawal symptoms
minor withdrawal
- tremulousness, mild anxiety, headache, diaphoresis, palpitations, anorexia, GI upset, normal mental status
seizures
- single or brief flurry of generalised, tonic-clonic seizures, short post-ictal period, status epilepticus is rare
alcohol hallucinosis
- visual, auditory, and or tactile hallucinations with intact orientation and normal vital signs
delirium tremens
- delirium, agitation, tachycardia, hypertension, fever, diaphoresis
How do you treat alcohol withdrawal
- Chlordiazepoxide
- lorazepam
can be either a fixed dose or used when there are symptoms
what is the benefit of using symptom triggered alcohol withdrawal treatment
- shorter time
- lower dose
- requires training to use
What criteria is used to judge how severe alcoholic hepatitis is
Maddrey’s criteria
- looks at the prothrombin time and bilirubin
describe alcoholic hepatitis presentation
- Clinical syndrome of recent onset jaundice with or without ascites with ongoing alcohol abuse
- can have a fever
What do the bloods look like in alcoholic hepatitis presentation
can have
- raised white cell count
- raised platelets
- raised AST