Gastro Flashcards
Stains for antral biopsies for h.pylori
Giesma
Haematoxylin
Eosin
Test for h pylori eradication
Urea breath test
Zollinger-Ellison - what is secreted?
Gastrin
Which MEN in ZE?
MEN1
Marker in GIST?
CD117 (C-KIT)
Staging for ZE?
Somatostatin receptor-scintigraphy
Insulinoma - which cells?
Islets of Langerhans
Glucagonoma - which cells?
Alpha cells
Triad of glucagonoma?
Diabetes
MNE
Weight loss
MNE?
Migratory Necrolytic Erythema
Massive diarrhoea and electrolyte deficiency?
VIPoma
HLA in coeliac?
HLA-BQ2, BQ8
Specific GI cancer risk increased in coeliac?
Small bowel lymphoma
Carcinoid - which cells?
Enterochromaffin cells
Carcinoid - what is secreted?
Serotonin
What does serotonin cause in carcinoid?
Bronchospasm and increased GI motility
SIgns of carcinoid?
Diarrhoea
Bronchospasm
Local effects of tumour
FLUSHING
RH disease
Treatment for diarrhoea in carcinoid?
Somatostatin analogue
Treatment of flushing in carcinoid?
Phenoxybenzamine
Phenoxybenzamine used for?
Flushing in carcinoid
GI bleeding, iron def., aortic stenosis?
Angiodysplasia
Test for bile salt malabsorption
SeHCAT
Risk factors for small bowel overgrowth?
Post-SB resection
Systemic sclerosis
Jejunal diverticulae
Where does Crohns affect
Particularly terminal ileum and colon but any part of the GI tract
Layers affected in CD?
Transmural (all layers)
Pathology findings in CD
Transmural inflammation
Mucosal/fissuring ulcers
Lymphoid aggregates
Neutrophil infiltrates
Clinical features of CD
Abdominal pain
Fever
Rectal bleeding
Anal/perianal/oral lesions
Obstructive symptoms
Associations of CD
Smoking
Skin - pyoderma, nodosum
Arthritis
Eye disease
Cholelithiasis
BMI cutoffs for weight loss surgery?
35 with complications
40 without
Most common cause of HCC in Europe, and worldwide?
Europe - Hep C
World - Hep B
Protein cutoff for Abx prophylaxis in ascites and what antibiotic?
Patients with ascites (and protein concentration <= 15 g/L) should be given oral ciprofloxacin or norfloxacin as prophylaxis against spontaneous bacterial peritonitis
Coeliac disease HLA?
HLA-DQ2
Chronic pancreatitis preferred imaging modality?
CT abdo
Strongest risk factor in CD?
Genetic
Which enzyme breaks starch into sugars?
Amylase
Arrhythmia from low magnesium in refeeding?
Torsades des Pointes
Pancreatitis causes
Popular mnemonic is GET SMASHED
Gallstones
Ethanol
Trauma
Steroids
Mumps (other viruses include Coxsackie B)
Autoimmune (e.g. polyarteritis nodosa), Ascaris infection
Scorpion venom
Hypertriglyceridaemia, Hyperchylomicronaemia, Hypercalcaemia, Hypothermia
ERCP
Drugs (azathioprine, mesalazine*, didanosine, bendroflumethiazide, furosemide, pentamidine, steroids, sodium valproate)
Hepatocelluar LFT injury
The following drugs tend to cause a hepatocellular picture:
paracetamol
sodium valproate, phenytoin
MAOIs
halothane
anti-tuberculosis: isoniazid, rifampicin, pyrazinamide
statins
alcohol
amiodarone
methyldopa
nitrofurantoin
Cholestatic LFT picture (drugs)
The following drugs tend to cause cholestasis (+/- hepatitis):
combined oral contraceptive pill
antibiotics: flucloxacillin, co-amoxiclav, erythromycin*
anabolic steroids, testosterones
phenothiazines: chlorpromazine, prochlorperazine
sulphonylureas
fibrates
rare reported causes: nifedipine
T2DM and abnormal LFTs?
NAFLD
First line treatment for NAFLD?
Weight loss
FAP gene?
APC
Small bowel overgrowth test?
Hydrogen breath test
Monoclonal antibody for c.diff?
bezlotoxumab
Life threatening c.diff?
Oral vanc + IV metro
Second line c.diff?
Oral fidaxomicin
AI hepatitis Ig?
IgG
Heart failure and significant skeletal muscle weakness in refeeding?
Hypophosphataemia