Treatment of Toxic Megacolon in Acute Severe Ulcerative Colitis with More Than Six Bloody Stools per Day
Clinical Scenario
Acute severe ulcerative colitis (ASUC) — historically called “fulminant” or “toxic” colitis — presents with more than six bloody stools per day together with at least one systemic sign of toxicity:
- Tachycardia
- Fever
- Anaemia (haemoglobin <10.5 g/dL)
- Elevated ESR (>30 mm/h) or CRP (>30 mg/L)
Treatment Approach — Partial Overview
The cornerstone of medical management in this setting is intravenous corticosteroid therapy, combined with essential supportive measures to stabilise the patient.
The complete regimen — including drug selection, dosing, sequencing, and the full management algorithm — is in the structured protocol below.
Treatment Targets
Response is assessed at day 3 to 5 of treatment. Adequate response is defined by a meaningful reduction in daily bowel movements, normalisation of inflammatory markers (CRP and ESR), resolution of fever, and absence of colonic dilation.
References
DOI: 10.1186/s13017-021-00362-3
- Acute severe ulcerative colitis (ASUC), historically referred to as “fulminant” or “toxic” colitis, represents a severe form of acute colitis involving more than six bloody stools per day accompanied by at least one systemic sign of toxicity including tachycardia, fever, anemia (hemoglobin <10.5 g/dL), or elevated erythrocyte sedimentation rate (ESR) greater than 30 mm/h.
- The mainstay of medical management of ASUC is intravenous (IV) corticosteroids.
- In addition, patients with ASUC should receive IV hydration/resuscitation, electrolyte replacement as indicated, deep vein thrombosis (DVT) prophylaxis, blood transfusions as needed, and total parenteral nutrition if malnourished.
- More than eight bowel movements per day on day 3 of corticosteroid treatment or three to eight bowel movements along with a C-reactive protein (CRP) greater than 45 mg/L predicted colectomy in 85% of patients.
- Additionally, the presence of hypoalbuminemia, colonic dilation, ESR greater than 75 mm/h, and fever greater than 38°C predicted failure of steroids.
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