Gastroenterology Flashcards
abdominal pain that does not wake patients at night with bloating and a mixture of constipation and diarrhoea alongside lethargy and nausea
IBS
1st line laxative for IBS
ispaghula husk
1st line medication for diarrhoea in IBS
MOA
loperamide
opioid agonist that reduces gastric motility
non-bloody diarrhoea with crampy abdominal pain
associated with weight loss, mouth ulcers, perianal disease, obstruction, skin tags, malabsorption, fistula, gallstones and renal stones
crohn’s
difference in the site of lesions between crohns and UC
crohns: skip lesions from the mouth to the anus
uc: continuous disease from rectum to ileocaecal valve
bloody diarrhoea with abdo pain in LLQ
associated with uveitis, proctitis, tenesmus, primary sclerosing cholangitis and colon cancer
UC
difference in histology between crohns and UC
crohns: mucosa to serosa associated with goblet cells and cobblestone appearance
uc: inflammation to submucosa only associated with crypt abscesses, ulceration and polyps
reduced haustra on enema
UC
kantors ring, strictures and rose thorn ulcers on enema
crohns
difference between mild, moderate and severe IBD
mild: less than 4 stools, normal CRP, ESR
moderate: 4-6 stools, minimal systemic upset
severe: more than 6 stools mixed with blood and systemic upset (fever)
medications to induce remission in mild to moderate UC
rectal aminoacylate (oral if extensive / more than 4w)
topical or oral steroid
medications to induce remission in severe UC
IV steroid
IV ciclosporin if persist for more than 72 hours
medication to maintain remission in mild to moderate
rectal/oral aminoacylate
medication to maintain remission in severe
oral azathioprine (check TMPT)
side effect of aminosalicyclate
agranulocytosis (check FBC)
2 blood markers for coeliac
anti-TTG and IgA
presentation of coeliac in child v adult
child: FTT, diarrhoea
adult: lethargy, diarrhoea, weight loss
3 things found on histology in coeliac
villous atrophy, crypt hyperplasia, epithelial lymphocytes
how long before biopsy do patients have to eat gluten
6w
can coeliac patients eat maize
yes
why is pneumococcal given every 5 years in coeliac
hyposplenism
anaemia in coeliac
iron folate and B12
cancer associated with coeliac
enteropathic associated T cell lymphoma
diarrhoea, rectal bleeding, anaemia, weight loss and anorexia
colorectal cancer
3 cancers associated with HNPCC
colorectal, endometrial and pancreatic
?ovarian
gastric cancer metastasis to periumbilical lymph nodes
sister mary joseph nodules
definition of acute diarrhoea
less than 14 days
2 medications which increase the risk of c diff
clindamycin and omeprazole
(any broad spec abx)
which blood markers measures the severity of a c diff infection
WCC
management of c diff
10 day PO vancomycin
recur in 12w then PO fidazomicin
severe: PO vancomycin and IV metronidazole
which medication increases the risk of toxic megacolon when prescribed during c diff
opioids
alternating diarrhoea and constipation with faecal incontinence in elderly
constipation causing overflow
which parasite is spread in swimming pools and reduces fat absorption causing greasy floating stool
giardia
RF and treatment for bacterial overgrowth
RF: DM
Treat: fiaximin
ABG in vomiting
metabolic ALKALOSIS with hypokalaemia
score for malnutrition
MUST
define malnutrition
unintentional loss of 10% weight in 3-6m
hypokalaemia, abnormal fluid balance and arrhythmias
refeeding syndrome
flushing, wheeze and diarrhoea caused by a GI tumour which secretes serotonin
carcinoid syndrome
treatment of carcinoid syndrome
octreotide
dysphagia, weight loss, anorexia and vomiting during eating
oesophageal cancer
most common histology of oesophageal cancer in the UK
site in oesophagus
adenocarcinoma
lower 1/3
most common histology of oesophageal cancer in the developing world
site in oesophagus
squamous cell
upper 2/3
RF for oesophageal cancer
GORD, Barrets, obesity, smoking, achalasia, alcohol
SSC: plummer vinson and nitrates (fish)
odonophagia and heartburn but systemically well
oesophagitis
history of HIV or ICS
oesophageal candidasis
dysphagia with solids and liquids, heartburn, regurgitation and cough
achalasia
barium swallow in achalasia will show what
dilated oesophagus
management of achalasia
heller cardiomyotomy
dysphagia, regurgitation, halitosis, aspiration, chronic cough and a gurgling midline lump in older men
pharyneal pouch
painless and intermittent dysphagia which relieves on swallow with a history of anxiety
globus hystericus
dysphagia of liquids and solids with extaocular weakness and ptosis
myasthenia gravis
dysphagia caused by oesophageal webs, glossitis and iron deficiency anaemia
plummer-vinson syndrome
differentiation between an upper and lower GI bleed
ligament of treitz
urea in upper GI bleed
high compared to lower
difference between duodenal and gastric ulcer
dudodenal ulcer is relieved by eating
gastric is worsened by eating
investigation for perforated ulcer
erect CXR
artery causing most duodenal bleeds
gastroduodenal artery
sharp and sudden RUQ pain
perforated ulcer
which score is done after endoscopy
what does it show
rockall score
risk of rebleed
which type of ulcers increase H. Pylori risk
duodenal
abx and ppi before the urea breath test
no ABx for 4w
no PPI for 2w
3 (4) medications for the eradication of h pylori
PPI
clarithromycin
metronidazole/amoxicillin
which test would you do for eradication of h pylori
urea breath test
MOA of terlipressin
vasopressin analogue
management of oesophageal varices
sengstaken-blakemore tube
variceal band ligation
when would you give a PPI in an upper GI bleed
after endoscopy only if non-variceal
2 side effects of PPI
osteoporotic fractures
hyponatremia
severe vomiting and pain in alcoholics resulting in haematemesis
mallory weiss tear (mucosal laceration)
mackler triad of vomiting, thoracic pain and emphysema in male alcoholics
boohaave syndrome
investigation for boohaave syndrome
CT contrast swallow
small arterial lesions in the submucosa 6cm from the O-G junction
dieulafoy lesion
TIBC in iron deficiency anaemia and anaemia of chronic disease
iron deficiency: increased
chronic disease: reduced or normal
reduced serum copper and calcluplasmin with increased ALT and AST
wilsons disease
medication to treat wilsons disease
penicillamine
pathophysiology of pernicious anaemia
reduced B12 absorption from intrinsic autoantibodies
presentation of pernicious anaemia
peripheral neuropathy, neuropsychiatric disorders and subacute combined degeneration of the cord
frequency of IM B12
8-12w
medication which caused B6 deficiency and management
isoniazid - give with pridoxine
autosomal recessive disorder causing fatigue, arthralgia and ED
haemachromatosis
ferritin, transferritin saturation, TIBC and iron in haemachromatosis
increased ferritin and transferritin saturation
reduced TIBC and iron
autosomal dominant condition causing pigmented freckles on the lips, face, palms and soles and polyps in the GI tract that cause obstruction
peutz jeghers syndrome
mucocutaneous lesions and iron defieincy anaemia
hereditary haemorrhagic telangiectasia
management of dysplasia on biopsy in barretts
endoscopic intervention
difference in prognosis between type 1 and 2 hepatorenal syndrome
T1: rapidly progressive and poor prognosis
T2: slower progression and poor prognosis (live longer)
marker in hepatorenal syndrome
creatinine
RUQ pain, nausea, vomiting, anorexia, myalgia and lethargy in patient with recent travel or IVDU
viral hepatitis
marker for hepatocellular carcinoma
AFP
most common cause of hepatocellular carcinoma in europe and worldwide
europe: hep c
worldwide: hep b
HBsAg
indicates acute disease (1-6m)
persists for more than 6m then chronic disease
anti HBS
immunity through disease or vaccination
-ve in chronic disease
anti HBC
infection
IgG acute (6m)
IgM persists
HbeAg
marker of replication and infection
how many types of autoimmune hepatitis are there
three
ALT/AST in autoimmune hepatitis
increased
management of autoimmune hepatitis
steroid, azathioprine, transplant
heart failure causing a stretched liver, pain and necrosis presenting with a firm, smooth, tender and pulsatile liver edge
congestive hepatomegaly
triad in budd chiari
sudden abdo pain
tender hepatomegaly
ascites
how do you calculate alcohol units
volume (mls) x ABV / 1000
ferritin levels in alcoholic
increased
ABG in alcoholic ketoacidosis
metabolic acidosis with low glucose
which medication is prescribed to every alcoholic
thiamine
AST/ALT ratio in alcoholic liver disease
2:1
management of severe alcoholic hepatitis
corticosteroids
which medication reduces mortality in variceal bleed
ABx
SAAG gradient above 11 in ascites indicates what
portal hypertension
management of ascites with a protein above 15
PO ciprofloxacin as prophylaxis for spontaneous bacterial peritonitis
most common organism in spontaneous bacterial peritonitis
e coli
treatment of ascites
paracentesis with albumin cover
what is TIPS
transjugular intrahepatic portosystemic shunt
connects the hepatic and portal vein
SE of TIPS
exacerbates hepatic encephalopathy
test for non alcoholic fatty liver disease
enhanced liver fibrosis (ELF) test
what can trigger decompensation in cirrhotic patients
constipation
sweet and faecal breath in liver failure
fetor hepaticus
liver enzymes in paracetamol
hepatocellular
high ALT and ALT/ALP ratio
normal ALP
which marker should you check in acute liver failure after paracetamol overdose
prothrombin time
drugs which cause liver disease
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