Scans Flashcards
Problems with ultrasound
User error
Patient BMI
Dilated bowel loops air blocks view
Need to have drunk clear fluids 6 hours before
What does the gallbladder do when you fast?
Distend
What is difficult t visualise on US?
Appendix, ovaries and tubes, gallstones (only 15-20% show)
Investigation for pyelonephritis
US KUB
When do you need to intervene with kidney stones?
When over 10mm - lithroscopy or urinary stent
Indications for arterial contrast CT abdo
Pseudo aneurysm
Ischaemic
Ruptured AAA
Where do you put contrast for bowel imaging?
Venous portal - bowel wall supply
When would u do a US over a CT?
Gallstones, cholecystitis
What are psuedocysts and when do they occur in pancreatitis?
Collections around pancreas, after 6 weeks
Why do you not use contrast CT with kidney stones?
Makes stones less clear
What scan do you use when unsure of appendicitis?
CT
What is hinchy classification and what is it for?
Grading for perforation in diverticulits
What bacteria is as with haemolytic uraemic syndrome?
E.coli
Complications of colonoscopy
Perforation, bleeding, sedation complications
PARAMETERS for referral with FIT test
> 350 once
100 twice
