Investigations

• CRP ^b

Why?

Ulcerative colitis: a CRP that remains elevated increases the risk of colectomy

Patient	Prognostic Factor	Outcome	CER	RR (95% CI)	NNF+ (95% CI)
active ulcerative colitis b	> 8 bowel actions and a CRP > 45 on day 3 of admission not independent	colectomy at ? weeks	8.5%	8.75 (2.86 to 26.8)	2 (1 to 6)