Liver Flashcards
Alcoholic liver disease overview
Damage to liver from alcohol
ALD Patho
Caused by alcohol abuse
Fatty liver
Alcohol metabolism -> fat production, cells swell with fat (steatosis)
Alcoholic hepatitis
Fatty change, inflammation
infiltration by leukocytes
hepatocyte necrosis, mallory bodies, giant mito
Alcoholic cirrhosis
Fibrosis
conversion from normal structure to abnormal nodules
irreversible
ALD Px
Fatty liver
asymptomatic
Vague abdo symptoms - N+V, diarrhoea
hepatomegaly
Alcoholic hepatitis
Jaundice
Signs of chronic liver disease (ascites, bruising, clubbing, Dupuytren’s)
Abdo pain, fever
Alcoholic cirrhosis
Signs of chronic liver disease
Features of alcohol dependency
ALD Ix
LFTs - GGT and ALP raised, AST and ALT mildly raised
FBC - thrombocytopenia, hypoglycaemia, elevated bilirubin and PTT, increased WCC, elevated MCV
Abdo USS
CT/MRI
Liver biopsy
ALD Mx
Stop drinking alcohol
Withdrawal symptoms - diazepam
IV thiamine - prevent Wernicke-Korsakoff encephalopathy (confusion, ataxia, nystagmus)
Good diet, infection prophylaxis
Liver transplant
ALD Cx
cirrhosis, liver failure, encephalopathy
Ascites overview
Free fluid in peritoneal cavity
Ascites causes
Local inflammation
Peritonitis, infection, abdo cancer, surgery
Low protein
Low albumin, loss of oncotic pressure
Hypoalbuminaemia, nephrotic syndrome, malnutrition
Low flow
Fluid cannot move through vessels, pressure raises, fluid leaks out
Cirrhosis (portal HTN), cardiac failure, constrictive pericarditis
Ascites Px
Signs Abdo swelling Fullness in flanks Shifting dullness Peripheral oedema Wt gain from water retention
Symptoms
Abdo pain (if severe, think bacterial peritonitis)
Maybe respiratory distress, difficulty eating
Ascites Ix
Abdo exam
USS/CT/MRI
Ascitic tap (WCC, culture, transudate/exudate)
Ascites Mx
Tx underlying cause
Oral spironolactone - K-sparing duiretic
Paracentesis - drain fluid
Transjugular intrahepatic portosystemic shunt (TIPS)
Biliary colic overview
Pain from gallstone in CD or CBD
Gallstones Patho
Cholesterol gallstone
Large, often solitary stone
Causes - female, age, obesity
Cholesterol crystallisation - either bile salt deficiency or relative excess cholesterol
Bile pigment stones
Small Ca stones, irregular
Black - from haemolysis (sickle cell, thalassaemia) and cirrhosis
Brown - stasis and infection (Ecoli/klebsiella)
Gallstones Risk Factors
Fair, fat, fertile, female, forty
Biliary colic Px
Sudden onset pain
Severe, constant, crescendo-like (not colicky)
Mid-evening onset, last to early morn
Epigastric/RUQ
Radiation - right shoulder, right subscapular
N+V
Biliary colic Ix
Abdo USS
Biliary colic Mx
Laparoscopic cholecystectomy
Gallstone Cx
In gallbladder/CD - biliary colic, cholecystitis, empyema (GB fills with pus), carcinoma, Mirizzi’s syndrome (stone in GB presses on BD, causes jaundice)
In BDs - obstructive jaundice, cholangitis, pancreatitis
Cholecystitis overview
Gallbladder inflammation
Cholecystitis patho
Stone obstructs GB emptying, increase of GB glandular secretion, distention, GB vascular supply may be compromised
Inflammatory response secondary to bile retained in liver (maybe infection secondary to vascular and inflammatory events)
Repeated acute attacks -> chronic
Cholecystitis Px
Epigastric pain -> localised RUQ (as inflammation progresses)
Tenderness, guarding, rigidity
Inflammation - vomiting, fever, local peritonism, raised WCC
Murphy’s sign - pain on deep breath in with two fingers on RUQ (and no pain for LUQ)
Jaundice if stone moves to CBD (but not normally)
Cholecystitis Ix
Bloods - raised WCC, CRP, bilirubin, ALP, ALT/AST
Abdo USS - thick walled, shrunken bladder, stones, fluid nearby
Cholecystitis Mx
Lap chol
IV fluids, analgesia, cefuroxime/ceftriaxone
Stone dissolution - oral ursodeoxycholic acid
Shock-wave therapy
Cholangitis overview
Inflammation of bile duct system
Cholangitis patho
Causes
- Secondary to CBD obstruction from gallstones
- strictures (following surgery)
- cancer of pancreas head -> BD obstruction
- biliary parasites
- ERCP
Infection ‘ascends’ up CBD from duodenum after biliary stasis
Common orgs in UK (KEES) - Klebsiella, Ecoli, enterococcus, streptococcus
Cholangitis Px
Biliary colic
Fever, rigors, jaundice, RUQ pain
Jaundice is cholestatic - dark urine, pale stools, itchy skin
(maybe lethargy/confusion, shock)
Biliary tract disease DDx
Biliary colic - RUQ
Cholecystitis - RUQ pain and fever/increased WCC
Cholangitis - RUQ pain, fever and jaundice
Cholangitis Ix
Bloods - increased WCC, ESR/CRP, bilirubin, ALP, ALT, AST
Abdo USS/CT
Magnetic resonance cholangiography
Cholangitis Mx
ABs - cefotaxime, metronidazole
Biliary drainage with endoscopic retrograde cholangio-pancreatography (ERCP) and sphincterectomy (cut biliary sphincter)
Remove stones
Cholangitis Cx
Sepsis, AKI, system dysfunction
Liver cirrhosis overview
Irreversible liver damage
Loss of normal structure, fibrosis
Liver cirrhosis causes
Common
- chronic alcohol abuse
- non-alcoholic fatty liver disease
- Hepatitis
Others
- primary biliary cirrhosis
- autoimmune hepatitis
- hereditary haemochromatosis
- Wilson’s disease
Liver cirrhosis Px
signs Leukonychia - white nails (from hypoalbuminaemia) clubbing palmar erythema Dupuytren's Spider naevi xanthelasma - yellow fat deposits under skin, usually around eyelids body hair loss jaundice hepatomegaly bruising ankle swelling, oedema ascites
symptoms
Abdo pain from ascites
Liver cirrhosis Ix
Child-Pugh classification
Liver biopsy
LFTs - low albumin, long PTT, high bilirubin
low Na - severe disease
Raised serum creatinine
Alpha-fetoprotein - hepatocellular carcinoma
USS/CT/MRI/Endo
Liver cirrhosis Mx
Treat underlying causes No alcohol Treat ascites Hep A/B vaccination Avoid NSAIDs, aspirin, salt Liver transplant
Liver cirrhosis Cx
Coagulopathy - fall in clotting factors 2,7,9,10
Encephalopathy - liver flap, confusion/coma
Hypoalbuminaemia - oedema
Portal HTN - ascites, oesophageal varices, caput medusa
Hepatocellular carcinoma
Portal HTN overview
Abnormally high pressure in hepatic portal vein
Portal HTN patho
Causes ascites, splenomegaly, portosystemic shunt (inc oesophageal varices), caput medusae (enlarged superficial periumbilical veins)
causes
Pre-hepatic - portal vein thrombosis
Intra-hepatic - cirrhosis, schistosomiasis, sarcoidosis
Post-hepatic - right heart failure, constrictive pericarditis, IVC obstruction, Budd Chiari syndrome (occlusion of hepatic vein)
Portal HTN Px
signs
splenomegaly
caput medusae
ascites
Evidence of causes of liver disease - eg jaundice, alcohol consumption, FHx (Wilson’s/haemochromatosis)
Cx of portal HTN may be present
- bleeding varices (haematemesis/melaena)
- encephalopathy - lethargy, irritability
Abdo pain/fever - SBP
Signs of chronic liver disease
Portal HTN Ix
Bloods
Abdo USS, doppler USS
CT/MRI
Liver biopsy - find underlying cause
Vascular imaging
Portal HTN Mx
Treat cause
Liver transplant
Reduce pressure - BBs, nitrates, shunt (transjugular intrahepatic portosystemic shunt (TIPS))
Salt restriction, diuretics
Portal HTN Cx
Oesophageal varices
Ascites and its Cx
Portopulmonary HTN
Liver failure, hepatic encephalopathy
Variceal haemorrhage Px
signs pallor shock - hypotension, tachycardia reduced urine output reduced GCS signs of chronic liver disease
symptoms haematemesis, malaena abdo pain dysphagia (uncommon) confusion - encephalopathy
Variceal haemorrhage Ix
Endoscopy
Bloods - FBC, LFT, clotting
CXR
ascitic tap if bacterial peritonitis suspected
Variceal haemorrhage Mx
Prevention - BBs, variceal banding, liver transplant
Resuscitate Blood if anaemic vit K, platelets - correct clotting abnormalities IV terlipressin (vasopressin) - causes vasoconstriction IV somatostatin if terlipressin CI (IHD) Balloon tamponade Variceal banding TIPS
Coeliac disease overview
Immune-mediated, inflammatory systemic disorder provoked by gluten (found in wheat, rye, barley)
CD Patho
T-cell responses -> villous atrophy and malabsorption
Associated with dermatitis herpetiformis
CD Px
Stinky stools/steatorrhoea Diarrhoea Abdo pain Bloating N+V Wt loss Fatigue, weakness Osteomalacia Mouth ulcers May mimic IBS
CD Ix
Anti-transglutaminase test (IgA) - check for alpha gliadin auto-ABs
Endoscopy and biopsy
CD Mx
Gluten free diet
CD Cx
Malabsorption, dermatitis herpetiformis, anaemia, osteoporosis, anxiety/depression
Diarrhoea overview
Increased stool freq and volume, decreased consistency
Acute <4wks, chronic >4wks
Diarrhoea causes
Viral most common
Children - rotavirus
Adults - norovirus
Bacterial
Campylobacter, E coli, salmonella, shigella
AB associated
ABs beginning with C can lead to C difficile
Clindamycin, ciprofloxacin, co-amoxiclav, cephalosporins
Parasitic
Giardia lamblia, entamoeba histolytica, cryptosporidium
Traveller’s diarrhoea, IBD, IBS, colorectal cancer, gastroenteritis
Diarrhoea Px
Diarrhoea (blood usually = bacterial infection)
Vomiting
Abdo cramping
Viral causes - fever, fatigue, headache, muscle pain
red flags
blood, recent hospital tx or ABs, persistent vomiting, weight loss, painless watery diarrhoea (dehydration risk), symptoms disturb sleep
Diarrhoea Ix
Thorough history
Look for dehydration (higher CRT, shock, dry mucous membranes), fever, goitre
Bloods - FBC
Stools - MC&S
Lower GI endoscopy
Diarrhoea Mx
Treat cause (ABs)
Oral rehydration
Anti-emetic for vomiting (metoclopramide)
Anti-motility - loperamide, codeine
Diarrhoea Cx
Dehydration, electrolyte imbalance, reactive Cx (reactive arthritis), infection spread, IBS, lactose intolerance
Acute hepatitis
Inflammation of liver
<6months = acute
Causes
Viral - Hep A,E,C,B/D, EBV, CMV, VZV
Non-viral - eg TB, toxoplasmosis
Non-infective - alcohol, drugs, toxins, metabolic, autoimmune, pregnancy
Px
signs
- cholestatic jaundice (pale stools, dark urine)
- hepatomegaly
- signs of fulminant hepatitis (acute liver failure) - bleeding, ascites, encephalopathy
symptoms
- malaise
- myalgia
- GI upset
- RUQ abdo pain
Ix
raised AST, ALP, +/-bilirubin
Chronic hepatitis
> 6months = chronic
Can maintain compensated liver function sometimes
Px can be asymptomatic signs when compensated - clubbing - palmar erythema - Dupuytren - spider naevi
signs when decompensated
- jaundice
- ascites
- low albumin
- coagulopathy - increased PTT, INR
- encephalopathy
Ix
LFT can be normal
Cx
hepatocellular carcinoma, portal HTN, varices