Common Alcoholic Liver Disease (ALD) exam questions for medical finals, OSCEs and MRCP PACES
Question 1.
How does alcoholic liver disease present?
- Three major presentations:
- Fatty liver:
- Accumulation of fat inside hepatocytes that can occur after only a few days of drinking heavily
- Usually asymptomatic and with no signs
- Alcoholic Hepatitis
- Inflammation of hepatocytes due to excessive alcohol intake
- Cases range from mild with only derangement of liver function tests to severe with a high mortality rate.
- Moderate cases may have mild jaundice, hepatomegaly and signs of chronic liver disease
- Severe cases may have decreased GCS, encephalopathy, high bilirubin levels and prolonged prothrombin times.
- Cirrhosis
- See compensated and decompensated chronic liver disease sections
- Fatty liver:
Question 2.
What is the possible pathogenesis of alcoholic liver disease?
- ETOH processing in the liver increases the NAD/NADH ratio, which causes more fatty acid synthesis and less fatty acid oxidation, causing fatty liver.
- Acetaldehyde produced from ETOH may also damage liver cells
- ETOH might convert normal hepatocytes into myofibroblasts, which lay down collagen and cause fibrosis.
- ETOH enhances the effects of other toxins on the liver (e.g. paracetamol).