Lower GIT bleed

Question 1

elevated urea but normal creatinine

Answer 1

UGIB

Question 2

causes of LGIB

Answer 2

1. Divert.
2. Angiodysplasia-slow bleeding, iron def anaemia
3. Colitis-Chrons, UC, CMV or shigella (ulcers, sloughing)
4. malignancy (presents with anaemia)
5. haemorrhoids (senses what is in rectum, gives idea about continence)

Question 3

investigations workup for LGIB

Answer 3

colonoscopy
angiography
radionucleotide scans

double balloon endoscopy-allows to transverse small bowel (like colonoscopy plus SB)

capsule endoscopy-camera