Gastroenterology Flashcards
What are the causes of hepatitis? (6)
Hereditary - Wilson's, haemochromatosis, alpha anti-1-deficiency Viral hepatitis Autoimmune hepatitis NAFLD Drug-induced e.g. paracetamol overdose Alcoholic hepatitis
Which of the viral hepatitis’ can cause cholestasis?
Hepatitis A
Which Ig indicates a recent or current infection of hepatitis B?
IgM
Which two blood tests are initially used to diagnose hepatitis B?
HBsAg and anti-HBc
Both of these suggest a current infection
Which antibody indicates immunity to hepatitis B?
anti-HBsAg
Which marker indicates hepatitis B is highly infective?
HBeAg
What do these results suggest?
———HBsAg + – – + +
——Anti-HBs – + + – –
——–HBeAg + – – +/– –
——Anti-HBe – +/– – +/– +
——Anti-HBc + + – + +
IgM anti-HBc + – – – –
—–HBV DNA + – – + + (low)
————-ALT H N N H N
- Acute infection
- Previous infection and immunity
- Vaccination
- Chronic infection - active
- Chronic infeciton - not active
Which hepatitis marker suggest high risk of chronicity and hepatocellular carcinoma?
HBV DNA
What type of medication is used to treat hepatitic C?
Direct acting antivirals
What are the 3 most common causes of cirrhosis in the UK?
Alcohol
Chronic hepatitis B and C
NAFLD
In which scenario can ELF be used to screen for cirrhosis?
NAFLD
What test is used first-line to detect hepatocellular carcinoma in those with cirrhosis?
How often should the test be done?
USS
Every 6 months
What is the MELD score?
How often do NICE recommend doing it?
What is in the MELD score? (5)
3 month mortality for those with compensated cirrhosis
Every 6 months
Bilirubin, INR, (i.e. liver) creatinine, sodium, whether they are on dialysis (i.e. kidney)
What are the complications of cirrhosis? (6)
Malnutrition Portal hypertension and variceal bleeding Ascites and SBP Hepatic encephalopathy Hepato-renal syndrome Hepatocellularcarcinoma
What medication is used for stable varices?
Propranolol
What options are there for varices via endoscope?
Elastic band ligation
Injecting sclerosant
What is the treatment for bleeding varices? (4)
Terlipressin
Correct coagulation e.g. vitamin K, FFP
Prophylactic antibiotics
Urgent endoscopy
What is the management for ascites? (4)
Ascitic tap and drainage
Prophylactic antibiotics (e.g. ciprofloxacin)
Aldosterone antagonist
Low sodium diet
What is the antibiotic of choice for spontaneous bacterial peritonitis?
IV cephalosporin e.g. cefotaxime
Why does hepato-renal syndrome occur?
Reduction in circulating blood volume due to portal hypertension means blood flow to kidneys reduced
RAAS activated which vauses vasoconstriction of renal blood vessels