Synopsis
Decide when ulcerative colitis requires emergency subtotal colectomy or elective removal of colon and rectum, match operative extent to acute physiology, dysplasia and chronic disease burden, and make ileal pouch versus permanent ileostomy a shared staged decision.
- Emergency indications include perforation, toxic megacolon, severe haemorrhage, uncontrolled sepsis and acute severe colitis that fails time-limited medical rescue.
- The acute operation is subtotal colectomy with end ileostomy and preservation of the rectum; avoid ileal pouch construction in active severe colitis and corticosteroid exposure.
- Elective proctocolectomy is considered for chronic active disease despite optimised therapy, intolerable treatment effects, cancer, unresectable or high-risk dysplasia and surveillance that cannot be performed effectively.
Key red flags
Free gas, generalised guarding, shock or rising lactate indicates perforation or ischaemia and requires immediate source control.
Transfusion-dependent colorectal haemorrhage that continues despite resuscitation is an operative indication even without radiological megacolon.
Increasing dilatation, pain or organ dysfunction during ASUC overrides the intended day-three or day-seven assessment schedule.
Failure to improve after seven days of correctly selected infliximab or ciclosporin rescue should lead to subtotal colectomy rather than serial unproven rescue switches.
Reasoning priorities
link stool frequency, bleeding, CRP, abdomen and physiology to the rescue or colectomy clock.
Persistent high burden at day three starts definitive escalation; deterioration at any time or failed rescue by day seven moves to surgery.
Worked reasoning
A 44-year-old with ASUC fails three days of hydrocortisone and receives ciclosporin rescue after joint review. Seven days later they still pass nine bloody stools daily, CRP is 96 mg/L, albumin 23 g/L and the abdomen is increasingly tender without free gas.
- Confirm correct steroid and rescue delivery, exclude untreated infection and repeat imaging and examination; worsening tenderness and absent response show that continuing ciclosporin will not restore a safe colon.
- Explain the indication, likely end ileostomy and retained rectal stump with the patient and stoma nurse, while resuscitating, cross-matching blood and arranging senior anaesthetic assessment.
- Proceed to subtotal colectomy and end ileostomy without constructing a pouch during acute inflammation, hypoalbuminaemia and recent high-dose corticosteroid exposure.
- Pathology shows continuous severe ulcerative colitis with deep ulceration, no Crohn features and no dysplasia; postoperative CRP falls to 28 mg/L and oral intake resumes on day four.
- Verify stoma independence, steroid-taper ownership and rectal-stump treatment, then schedule a recovery-stage discussion of completion proctectomy, IPAA or continued rectal retention.