Liver Symposium - key features/sparse cards Flashcards
Type of visuses: ABCDE and whyat type of disease do they causde
A and E are enteric viruses causing self limiting infections
B, C and D are parenteral viruses causing chronic disease
What test for hep A? How is it tspread?
Hep A Test is IgM (current infection).
Spread faecal, oral, sexual.
Vax for travellers/people in high risk countries (middleearth)
wHICH antigens PRESENIN hEP b. How do we test?
HBsAg (surface antigen) - presence of viral shell (may or maynot be active
HBeAg - active replication
HBcAG - detected in liver, C ore antigen - active replication
DNA - active replication
wHAT HAPPENS IF YOUHAVE HEP b
Some people kill it all off, some people have chronic infection and are asymptomatic or no further progression, sometimes progresses to cirrosis which can lead to end stage liver disease
wHEN DO WE TRAT AND WHAT DO WE TREAT hEP b WITH?
HBeAg greater than 2000 IU/ml
Treated with:
Pegylated interferon and oral antiviral drugs (Tenofovir)
hEP c INFECTION PRESENTATION
May only present very late stage with liver cirrhosis
Treatment of Hep C
Direct acting anti-vioral drugs
What is Hep D?
A parasite of Hep B. Very hard to deal with.
Hep E effects
usually self limiting. Increasing recognition in the UK, no treatment or vax available rn.
Effect of sulfonamides, rifampicin, penytoin, diclofenac, disulfiram on liver?
Toxic necrosis
Effect of Methyldopa, nevirapine, ritonavir and minocycline on liver?
Acute hepititis
Oral conraceptine, anabolic steroids and warfarin have what effect on liver?
Cholestasis
Macrolide antibiotics, phenytoin, verapamil, chlorpromazine have what effects?
MINOCYCLINE, NITROFURANTOIN, FENOFIBRATE, METHYLDOPA, PHENYTOIN DICLOFENAC CAUSE WHAT TO THE LIVER?
Chronic hepititis
Oral ontraceptives and dacarbazine can cause what to the liver?
Hepatic vein thrombosis
Azathioprine, oral contraceptives, mercaptopurine, tetracycline can cause what to the liver?
Veno-occlusive disease?
Corticosteroids, amiodarone, diltiazrm and verapamil can cause what re liver?
Steatosis
Amiodarone, carbamazepine, diltiazem, isoniazid, methyldopa, phenytoin and sulfonamides can cause what type of liver injury?
Granulomatous hepatitis
What is the antidote for paracetamol induced liver failure?
N-Acetyl cysteine (NAC)
3 stage:
150mg/kg 1st h
50mg/kg over next 4h
100mg/kg over next 16 h
Treatment line is at a lower threshold for patients with liver failure
What is NAFLD?
Non-Alcoholic Fatty Liver Disease,
“Umbrella term encompassing three entities:
Simple steatosis (fat in liver cells)
Non alcoholic steatohepatitis (advanced fat in liver cells inc. inflammation)
Fibrosis and cirrhosis”
Journey of normal liver to cirrhosis in fld
Normal liver -> steatosis -> steohepititis (non-alcoholic) ->Cirrohsis
How is nafld tested for?
AST/ALT (both enzymes found in the liver , aLt only in liver, aSt found elsewhere eg muscles, heart - Systemic) ratio - rules out alcoholic liver disease.
Diagnostic gold standard: Liver Biopsy.
Diagnostic:
Ultrasound
Scarring diagnosis::
Fibroscan
Also:
ELF, Cytokeratin-18
research: MR/CT, MR Spectroscopy (quantifies fat)
What is Fib 4 scoring used for? Values to see in clinic?
Used to work out if fibrosis based on ast,alt, platelet and age.
under 1.45 means no advanced fibrosis. Above this may be seen in clinic
over 3.25 = cirrhosis
NALFd treatment?
Diet and weight loss, exercise.
May give metaformin, pioglitazone (insulin sensitizers)
Others:
Glucagon-like peptide-1 (GLP-1) analogues e.g. Liraglutide
Farnesoid X nuclear receptor ligand e.g. Obeticholic acid
Vitamin E
Weight reduction surgeries
Main 3 autoimmune disease
primary bilary cholangitis (PBC)
primary sclerosing Cholangitis (PSC)
Autoimmune hepititis
ALSO:
Overlap syndromes
Autoimmune cholangiopathy
IgG 4 disease
Autoimmune hepitits:
Who mainly?
WHat is found?
What antibodies (Types 1,2,3)
What is the diagnostic test?
What is the treatment?
Mainly females
Raised IgG
Antibodies:
Type 1: ANA, SMA
Type 2: LKM1
Type 3: SLA
Diagnostic test: liver biopsy
Treatment: steroids, azathioprine
Primary biliary cholangitis:
WHo found in predominantly?
What is elevaated?
Anti-mitochondrial antibody test result?
Is the intrahepatic bile duct involved?
Common symptoms
What is the treatment?
Predominantly females
elevated IgM
Anti-mitochondrial antibody test positive
intrahepatic bile duct is involved
smptoms include: pruritus (itchy skin) and fatigue
Treatment: Ursodeoxycholic acid (UDCA) - a secondary bile acid
Primary sclerosing cholangitis:
Predominantly found in who?
pANCA test positive/negative?
Which bile ducts involved?
What does it cause?
Symptoms and test of choice?
Predominantly males
pANCA test positive
intra and extrahepatic ducts involved
causes stricturing disease
MRCP is test of choice
Symptoms inc. recurrent cholengitis and jaundice
Treatment is liver transplant, biliary stents
Reasons for liver transplant?
liver failure
Contraindications for liver transplant?
ill mental health, cancer metastases, still drinking alcohol, active infection
What scoring system is used to decide who gets prioritized for a liver transplant?
UKELD( Bilirubin, Sodium, Creatinine and INR)