Senior surgery Flashcards
Truelove and Whitt’s criteria for acute severe colitis?
Frequency of stool >6 Overtly bloody stool Fever (>37.5) Tachycardia (>90) Anaemia (Hb<105) Raised ESR (>30)
1st line tx for severe UC flare?
IV hydrocortisone 100mg 6 hourly
LMWH
AdCal-D3
2nd line tx for severe UC flare?
Ciclosporin
infliximab if contraindicated
Initial ix in someone with ?bowel obstruction?
Basic obs
PR
Supine AXR
Difference between caecal voluvulus and sigmoid volvulus on axr?
Sigmoid = upside down U Caecal = U
Initial mx of volvulus?
Sigmoidoscopy and passage of decompressing flatus tube
Why does sigmoid volvulus occur?
Due to twisting of the bowel on lax mesentery
Tx for recurrent sigmoid volvulus?
Sigmoid colectomy
Which side of colon cancer is more likely to obstruct?
Left
Which side of colon cancer is more likely to cause anaemia?
Right
Who is a barium enema contraindicated in?
Patients at risk of perforation
What does presence of air in the rectum in obstruction suggest?
Left side obstruction unlikely
How is pseudo-obstruction usually managed?
Conservatively
Correct electrolyte abnormalities
Colonoscopic decompression can be useful acutely
AXR diameter for small and large bowel obstruction
Small >3cm
Large >5cm
Most likely cause of peritonitis?
Perforated viscus
Common causes of free intra-peritoneal air (pneumoperitoneum)?
Laparotomy 24 hours ago
Perforated duodenal ulcer
Perforated diverticulum
Perforation of which structures can cause air to accumulate retroperitoneally?
3rd part of duodenum
Ascending colon
Descending colon
Causes of toxic megacolon?
UC
Infective colitis
Crohn’s
What level does serum amylase need to be to confirm pancreatitis?
> 1000
How can a pancreatic pseudocyst be managed?
1st line = Conservative - Admit for bowel rest (nil by mouth), parenteral nutrition (TPN), regular imaging, and observation (up to 12 weeks)
2nd line = Endoscopic ultrasound guided drainage
3rd line = cystogastrostomy
How to measure pancreatic insufficiency?
Clinical judgement
Faecal elastase
Glasgow Imrie Score for acute pancreatitis? When do you use it?
PaO2< 7.9kPa Age >55y/o Neutrophils (WBC > 15) Calcium < 2mmol/L Renal function: Urea > 16 mmol/L Enzymes LDH > 600IU/L Albumin < 32g/L (serum) Sugar (blood glucose) > 10 mmol/L
Use it 48 hours after admission!
Complications of ERCP?
Perforation Aspiration pneumonia Haemorrhage Acute pancreatitis Ascending cholangitis
When might you see porcelain gallbladder?
In chronic cholecystitis and gallstones
Premalignant
Signs of pyogenic liver abscess?
Liver enlargement
RUQ pain
Sepsis