Diseases of the small bowel and appendix Flashcards
What can cause small bowel obstruction?
Fluid, gas ischaemia, perforation
What will obstruction present with?
Absolute constipation Vomiting Colicky, central pain Burping Abdominal distension
What are the 3 types of obstruction?
Within the lumen (gallstone, food, bezoar)
Within the wall (tumour, crohn’s, radiation)
Outisde the wall (adhesions, herniation)
What is borborygmi?
A rumbing or gurgling noise made by the movement of fluid and gas in the intestines
What investigations should be carried out for a suspected small bowel obstruction?
Urinalysis Bloods Gases AXR Contrast CT
What is drip and suck?
ABC
Analgeisa
Fluids with potassium - patients usually hypokalaemia and alkalotic
Catheterise
NG tube
Antithromboembolism measures - ted stockings
When should surgical intervention be used for obstruction?
Hernias
Strangulation
Perforation
Ischaemia
What can cause mesenteric ischaemia?
Embolus, thrombosis
What can cause chornic mesenteric ischaemia?
SMA
Cramps like angina of the guts
Atherosclerosis
Why will the colon live when there is mesenteric ischaemia?
Due to the marginal artery of drummond
What can cause an embolus?
AF, formed in left atrium and will stick in narrow SMA
Why will thrombosis occur in accordance with virchows triad?
Dehydration
Hypercoguable due to unwell state
Compression
Vasoconstricting drugs
How is mesenteric ischaemia diagnosed?
Pain out of proporiton to clinical findings Metabolic acidosis Elevated lactate Normal CRP WCC raised slightl CT angiogram
How is mesenteric ischaemia treated?
Quickly
Resect if non-viable
Re-anastomose or staple and planned return
SMA embolectomy
What can cause haemorrhage in the small bowel?
Vascular malformations
Ulcerations