Gastro Flashcards
acute pancreatitis causes
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Gallstones (female)
Ethanol (male)
Trauma
Steroids
Mumps
Autoimmune
Scorpion venom
Hypercalcaemia
ERCP
Drugs: azathioprine, thiazides, mesalazine
acute pancreatitis symptoms
- severe epigastric pain radiates to back
- nausea and vomiting
- fever
acute pancreatitis signs
- Grey turner’s: flank bruising
- Cullen’s: periumbilical bruising
acute pancreatitis bloods
- high serum amylase & lipase (more specific)
- FBC: high WCC
- high CRP
- low calcium
- LFTs: high ALT suggests gallstones
- blood gas
acute pancreatitis imaging
CT abdomen
US for gallstones
acute pancreatitis severity score
Glasgow score: PANCREAS
PO2 < 8
Age > 55
Neutrophils (WCC > 15)
Calcium < 2
Renal (urea > 16)
Enzymes (ALT > 200)
Albumin < 32
Sugar > 10
acute pancreatitis management
IV fluids (most important)
IV antibiotics
NGT if vomiting (prefer oral nutrition)
analgesia
antiemetics
oxygen if hypoxic
acute pancreatitis complications
pancreatic pseudocyst
chronic pancreatitis
abscess
ARDS
AKI
septic shock
chronic pancreatitis presentation
diabetes (annual HbA1c)
loose floaty stools (malabsorption)
chronic pancreatitis causes
on going alcohol use
chronic pancreatitis investigations
faecal elastase
CT abdomen calcification
chronic pancreatitis management
enzyme replacement (Creon)
acute cholangitis causes
common bile duct obstruction causes E Coli infection
- gallstones
- iatrogenic strictures
acute cholangitis presentation
Charcot’s triad
1. fever
2. RUQ pain
3. jaundice (pruritus, pale stools, dark urine)
acute cholangitis bloods
- FBC: high WCC
- high CRP
- LFTs: high ALP, high bilirubin
- blood culture
acute cholangitis imaging
first line: US for all RUQ pain
diagnostic: ERCP (MRCP if uncertain)
acute cholangitis management
i) ERCP + fluids + antibiotics + analgesia
ii) elective lap cholecystectomy
acute cholangitis complications
bile duct perforation -> sepsis
ERCP complications (pancreatitis)
ulcerative colitis with jaundice, raised ALP?
primary sclerosing cholangitis
PSC antibodies
p-ANCA
first line management of PSC
ursodeoxycholic acid
complication of PSC
cholangiocarcinoma
PSC investigations
MRCP/ERCP
pancreatic cancer histology
adenocarcinoma
pancreatic cancer risk factors
old, smoking, diabetes, chronic pancreatitis
Lynch syndrome, MEN
pancreatic cancer presentation
painless jaundice
palpable gallbladder
FLAWS
steatorrhoea (difficult to flush stool)
Trousseau sign
pancreatic cancer cancer marker
Ca19-9
pancreatic cancer imaging
first line: US for jaundice
diagnostic and staging: CT abdomen
pancreatic cancer management
chemo + Whipple + enzyme replacement
palliative: ERCP stent
pancreatic cancer LFTs
high ALP, high bilirubin
acute cholecystitis causes
gallstone obstructing cystic duct
acute cholecystitis presentation
fever
RUQ pain
no jaundice
Murphy’s sign: pain with palpation on inspiration
acute cholecystitis bloods
high WCC, high CRP
normal lipase & amylase (exclude pancreatitis)
LFTs (not too bad)
acute cholecystitis imaging
no sepsis: US
sepsis: CT abdomen (gallbladder empyema, perforation)
acute cholecystitis management
fluids + antibiotics + analgesia + lap chole within 1 week
acute cholecystitis complications
- gallbladder empyema
- perforation
- gallstone ileus (SBO)
cholelithiasis vs choledocholithiasis
cholelithiasis: stones in gallbladder
choledocholithiasis: stones in common bile duct
gallstones risk factors
- 5 Fs
Fat (cholesterol stones)
Forty
Female
Fair (haemoglobinopathy - Sickle cell)
Fertile (pregnant, OCP) - Crohn’s
biliary colic presentation
RUQ pain after a meal
biliary colic investigations
normal LFTs
normal FBC
normal amylase & lipase
abdominal US
biliary colic management
analgesia + elective lap chole
cholestatic drugs
co-amoxiclav
macrolides (clarithromycin, erythromycin)
oral contraceptive
testosterone
sulphonylureas
3 features of Crohn’s histology seen in biopsy
transmural inflammation
increased goblet cells
non-caseating granulomas
2 features of Crohn’s seen in colonoscopy
cobblestone appearance
skip lesions
site affected by Crohn’s
anywhere from mouth to anus
commonly terminal ileum and perianal lesions
biggest risk factor that worsens Crohns
smoking
3 GI symptoms of Crohn’s
RIF pain
diarrhoea with mucus
weight loss
4 extra-intestinal symptoms of Crohn’s
mouth ulcers
joint pain
erythema nodosum
pyoderma gangrenosum
what is seen in an abdominal X-ray in Crohn’s
bowel dilatation
what is seen in Barium enema single contrast in Crohn’s
string of Kantor
rose thorn ulcer
how to induce remission in Crohn’s
- steroids
- IV hydrocortisone if severe
- oral prednisolone if mild/moderate)
3 complications associated with Crohn’s
gallstones
fistula & abscess
small bowel obstruction
diagnostic investigation in IBD
colonoscopy and biopsy
3 features of UC histology seen in biopsy
inflammation only in mucosa
crypt abscesses
goblet cell depletion
2 features of UC seen in colonoscopy
continuous inflammation
pseudopolyps
site of inflammation in UC
rectum and colon
gene for UC
HLA B27
smoking in UC
smoking is protective in UC
3 gastrointestinal features of UC
bloody diarrhoea
tenesmus
LLQ pain
4 extra-intestinal features of UC
ankylosing spondylitis
eyes
erythema nodosum
pyoderma gangrenosum
abdominal X-ray in UC
thumbprinting
what is seen in Barium enema double contrast in UC
lead pipe appearance (loss of haustrations)
how to classify UC flares
- Mild: <4 stools a day
- Moderate: 4-6 stools a day with no systemic upset
- Severe: systemic upset (fever, CRP)
how to induce remission in mild/moderate UC
i) rectal mesalazine
ii) oral mesalazine
iii) oral prednisolone if above ineffective
how to induce remission in severe UC
IV hydrocortisone in hospital
how to maintain remission after mild/moderate UC flare
mesalazine
how to maintain remission after severe UC flare
azathioprine
complications of UC
- toxic megacolon
- colon cancer
- primary sclerosing cholangitis leading to cholangiocarcinoma
4 causes of a gastrointestinal perforation
- perforated ulcer (most common)
- perforated diverticulum
- perforated oesophagus (Boerhaave’s)
- perforated appendix
features of a patient with gastrointestinal perforation
- very unwell: fever, hypotension, tachycardia
- peritonitis: severe generalised pain with distention and rigidity
what do bloods show in gastrointestinal perforation
neutrophilic leucocytosis
lactic acidosis
raised urea and creatinine
first line and diagnostic imaging in gastrointestinal perforation
- first line: erect CXR air under the diaphragm
- diagnostic: CT AP
what will an abdominal X-ray show in someone with gastrointestinal perforation
Rigler’s sign: double intestine wall due to air in the peritoneum
conservative management of a gastrointestinal perforation
IV fluids
broad spectrum antibiotics (tazocin)
NBM put an NG tube
IV PPI
insert a catheter
definitive management of a gastrointestinal perforation
emergency surgery
omental patch in ulcers, bowel resection in bowel
what are the three stages of alcoholic hepatitis
- fatty liver (reversible)
- alcoholic hepatitis
- cirrhosis
what are 3 symptoms of alcoholic hepatitis
- RUQ pain
- nausea
- hepatomegaly
what do LFTs show in alcoholic hepatitis
- high AST and gamma-GT
- AST:ALT ratio >2
- high bilirubin
what are two markers of poor liver function
- low albumin (chronic)
- prolonged PT (acute)
what is the imaging of choice in alcoholic liver disease
US of liver
what do you see in liver biopsy of alcoholic liver disease
- Mallory Denk bodies
- Ballooning
how do you manage alcoholic liver disease
i) alcohol abstinence
- thiamine for Wernicke’s
- benzodiazepines for withdrawal
ii) prednisolone if severe
what are three sources of raised ALP
- pregnancy
- bone mets, Pagets
- obstructive jaundice
what is the classic presentation of Gilbert’s
- healthy male
- normal LFTs
- isolated raised bilirubin
Budd-Chiari syndrome: what is it, triad of symptoms, associations
- hepatic vein thrombosis
- triad of abdo pain, ascites, hepatomegaly
- associated with hypercoagulation
upper GI bleed scoring system
Glasgow-Blatchford