Gastroenterology Flashcards
What is the most common organism found on paracentesis in cases of SBP?
E.coli
Which type of diabetes drugs can cause cholestasis?
Sulphonylureas - e.g. gliclazide
Which drugs can cause a hepatocellular-type picture?
- Paracetamol
- Sodium valproate, phenytoin
- MAOIs
- Halothane
- Anti-tuberculosis: isoniazid, rifampicin, pyrazinamide
- Statins
- Alcohol
- Amiodarone
- Methyldopa
- Nitrofurantoin
Which drugs can cause cholestasis?
- COCP
- Antibiotics: flucloxacillin, co-amoxiclav, erythromycin
- Anabolic steroids, testosterones
- Phenothiazines: chlorpromazine, prochlorperazine
- Sulphonylureas
- Fibrates
Which drugs can cause liver cirrhosis?
- Methotrexate
- Methyldopa
- Amiodarone
When should patients receive fresh frozen plasma?
Those who have either a fibrinogen level of less than 1 g/litre, or a prothrombin time (international normalised ratio) or activated partial thromboplastin time greater than 1.5 times normal
When should patients receive prothrombin complex concentrate?
Those taking warfarin and actively bleeding
What is the first-line management for C.diff?
ORAL vancomycin
What is the first-line management for PBC?
Ursodeoxycholic acid
Which antibody is highly specific for PBC?
AMA M2 subtype - 98% of patients
Which manifestations are indicators of disease activity in IBD?
- Arthritis - pauciarticular, asymmetric - most common maifestation
- Erythema nodosum
- Episcleritis - more common in CD than UC
- Osteoporosis
What are the reversible complications of haemochromatosis?
- Skin discolouration
2. Cardiomyopathy
What is mild UC?
<4 stools/day, only a small amount of blood
What is moderate UC?
4-6 stools/day, varying amounts of blood, no systemic upset
What is severe UC?
> 6 bloody stools per day + features of systemic upset (pyrexia, tachycardia, anaemia, raised inflammatory markers)
How is mild-moderate UC treated?
Proctitis or proctosigmoiditis and left-sided UC - topical (rectal) aminosalicylate –> oral aminosalicylate –> topical/oral steroids
Extensive - topical (rectal) aminosalicylate and a high-dose oral aminosalicylate
How is severe UC treated?
In hospital, IV steroids –> consider add IV ciclosporin/surgery if no improvement in 72 hours
Which Abx is associated with a high risk of C diff?
Clindamycin
What would suggest high ferritin levels are due to iron overload?
High transferrin saturation - >50% in males, >45% in females
What are the causes, other than iron overload that may cause raised ferritin?
- Inflammation
- Alcohol excess
- Liver disease
- Chronic kidney disease
- Malignancy
What is the commonest cause of hepatocellular carcinoma in Europe?
Hep C
What is the commonest cause of hepatocellular carcinoma worldwide?
Hep B
What is the most appropriate test to test for H.pylori?
13C-urea breath test
What is seen on biopsy in gastric cancer?
Signet ring cells
What are the signs of lymphatic spread of gastric cancer?
- Left supraclavicular lymph node (Virchow’s node)
2. Periumbilical nodule (Sister Mary Joseph’s node)