Table 1

Causes of lower GI bleeding as per the BSG guidelines algorithm including those who would have been suitable for therapeutic intervention

High shock indexLow shock index and high Oakland scoreLow shock index and low Oakland score
Normal endoscopy (n=6)
Diverticulosis (n=5)
Underlying liver disease (n=3)
UC (n=1)
Crohns’ colitis (n=1)
Underlying haematological disorder (n=1).		Normal endoscopy (n=4)
Diverticulosis (n=3)
Ischaemic colitis (n=3)
Inflammatory (n=3)
Haemorrhoids (n=3)
UC (n=3)
Radiation proctopathy (n=1)
Crohns’ colitis (n=1)
Angiodysplasia (n=1)
Polyp (n=1)		Normal endoscopy (n=28)
Diverticulosis (n=74)
Ischaemic colitis (n=15)
UC (n=9)
Haemorrhoids (n=9)
Polyp (n=8)
Colorectal cancer (n=8)
Inflammatory (n=5)
Declined investigations (n=3)
Angiodysplasia (n=4)
Postpolypectomy bleed (n=2)*
Solitary rectal ulcer syndrome (n=2)
Colonic stricture (n=1)
Crohns’ colitis (n=1)
Small bowel varices (n=1)
Anal fissure (n=1)

  • *Denotes potential for endoscopic intervention to arrest bleeding.

  • BSG, British Society of Gastroenterology.