gastro Flashcards
what stimulates g cells to release gastrin
luminal peptides
plummer vinson syndrome
Triad of:
dysphagia (secondary to oesophageal webs)
glossitis
iron-deficiency anaemia
primary billiary cholangitis, CFs, symptoms, treatment, Ix
which autoimmune condition is also seen in 80% of PBC pts
middle aged females, IgM, ALP, raised bilirubin
CFs:
pruitus, clubbing, hepatosplenomegaly
Ix: bloods, MRCP (exclude extrahepatic cause)
Treatment: ursodeoxycholic acid- slow progression
cholestyramine- itching
fat soluvle vit supplementation
Liver transplant if bili>100
MOST associated w sjogrens
wilsons disease associated with which type of anaemia?
haemolytic anaemia
keiser fleischer rings =— what condition
wilsons disease
wilsons disease
symptoms;
hepatitis, cirrhosis, speech/psych problems
kayser fleischer rings
BLOODS:
reduced caeruloplasmin
reduced total serum copper
increased 24hr urinary copper excretion
ATP7B gene
Mx
penicillamine- chelates copper
Hep b serology
HBsAg
anti-HBc
Anti-HBs
IgM anti-HBc negative
HBsAg = ongoing infection, either acute or chronic if present > 6 months
anti-HBc = caught, i.e. negative if immunized
Anti-HBs = immunity
IgM anti-HBc negative= chronic infection
IgM anti-HBc positive= acute infection
what is budd chiari syndrome
hepatic vein thrombosis
what is budd chiari syndrome caused by
polychythaemic rubra vera
thrombophillia- protein c resistance, antithrombin 3 def
pregnancy
COCP
triad of symptoms budd chiari syndrome
- abdominal pain: sudden onset, severe
- ascites → abdominal distension
- tender hepatomegaly
c diff morphology
gram positive rod
alphafetoprotein elevated in Hepatocellular carcinoma or cholangiocarcinoma
hepatocellular carcinoma
underlying aetiology of hepatorenal syndrome?
Splanchnic vasodilation
hepatorenal syndrome treatment
vasopressors analogue -eg terlipressin
liver transplant
20% albumin
transjugular intrahepatic portosystemic shunt
Terlipressin= vasopressor= splanchnic CONSTRICTION
Boerhaave syndrome
severe vomiting causing oesophageal rupture – chest pain and shock
raised conjugated bilirubin, black liver
Dubin-Johnson syndrome
which anti emetic can cause tardive dyskineseia
metoclopramide
which anti emetic can cause tardive dyskineseia
metoclopramide
Familial adenomatous polyposis which chromosome is mutated
chromosome 5
elderly patient who has a history of aortic stenosis presents with rectal bleeding. A colonoscopy shows multiple small, flat, erythematous lesions with scalloped edges
Angiodysplasia
a man who presents with intussusception is noticed to have multiple polyps on colonoscopy. These are later shown to be hamartomatous. He also has pigmented lesions on his lips and palms
Peutz-Jeghers syndrome
LKB1 or STK11
Whipple’s disease
Tropheryma whippelii infection. It is more common in those who are HLA-B27 positive and in middle-aged men.
jejunal biopsy shows deposition of macrophages containing Periodic acid-Schiff (PAS) granules
Management
oral co-trimoxazole for a year ., sometimes preceded by a course of IV penicillin
W-weight loss , worn out joints
H- Hyper pigmentation , Hyperactive bowel(diarrhea)
I- Inadequate absorption of minerals , vitmains
P-pleurisy
P-Pericarditis
L-Lymphadenopathy
E-elevated macrophages on Biopsy
Diarrhoea, weight loss, lymphadenopathy, arthralgia, fever in a question is most likely to indicate:
whipples disease
mesalazine or sulfasalazine more likely to cause acute pancreatitis?
mesalaizine
causes of cause of jejunal villous atrophy
Jejunal villous atrophy
coeliac disease
tropical sprue
hypogammaglobulinaemia
gastrointestinal lymphoma
Whipple’s disease
cow’s milk intolerance
which antibiotic can cause cholestasis
co amxiclav
which monoclonal antibody targets c diff
Bezlotoxumab
hereditary non-polyposis colorectal carcinoma HNPCC inheritance pattern
autosomal dominant
DNA Mismatch repair
HNPCC associated with which other type of cancer
endometrial
FAP
which chromosome affected
is a rare autosomal dominant condition which leads to the formation of hundreds of polyps by the age of 30-40 years.
CHROMOSOME 5
APC gene
way to remember coeliac HLA genes
That person with coeliac disease is da cutie (DQ2) and quiet (Q8)
which chromosome haemochromatosis and which deficiency causes it>
haemachromotoSIS (SIX)
HFE deficient
first line management NAFLD
weight loss
ischaemic colitis- most likely to affect ?part of colon
splenic flexure
superior and inferior mesenteric arteries.
secondary prophylaxis of hepatic encephalopathy
medications
lactulose
rifaximin
how to remember recessive vs dominant
MRDS- MR Denotes Surgeon
(Metabolic-Recessive; Dominant-Structural)
UC- which part of colon most commonly affected
terminal ileum
Cholestasis Drugs:
Choleostasis Drugs: FAt-E CRAPS (Steatorrhea)
- Fibrates
- Antibiotics (penicillin, co amox, erythromycin, fluclox)
- Erythromycin
- COCP
- Rare (nifepdipine)
- Anabolic steroids/testosteorne
- Phenothiazides
- Sulphonylureas
nicotinic acid test tests which condition
gilberts syndrome
what type of anaemia common in alcoholics
macrocytic
heart condition as result of hypomagnesia in refeeding syndrome
torsade des pointes
first line type of gastric band surgery
laparoscopic-adjustable gastric banding (LAGB)