π Treat with high-dose IV steroids for 3 days and then decide if rescue therapy such as Infliximab, Ciclosporin, or Colectomy is needed. π¨ Early escalation saves lives.
| β‘ Initial Management Summary for Acute Severe Colitis |
- π§Ύ Assess severity using Truelove and Witts criteria.
- π§ Give IV fluids, correct electrolytes (esp. potassium), and provide VTE prophylaxis.
- π IV Hydrocortisone 100 mg QDS for 3 days β review response. (PO steroids for milder disease).
- π¦ Test for & treat C. difficile infection if present.
- β Stop drugs that slow motility (opiates, anticholinergics, loperamide).
- πΈ Repeat AXR/CT if worsening to exclude perforation or toxic megacolon.
- π€ Liaise early with colorectal + GI teams.
- π
On Day 4 β make joint decision on rescue therapy (Infliximab / Ciclosporin / Surgery).
|
π About
- β οΈ Acute severe colitis (ASC) is a life-threatening complication of ulcerative colitis.
- Major risks: toxic megacolon, perforation, sepsis.
- Pathophysiology: inflamed mucosa loses absorptive capacity β diarrhoea, bleeding, protein loss, and systemic illness.
π§ββοΈ Clinical
- π‘οΈ Fever, malaise, anorexia.
- π© Frequent bloody diarrhoea Β± mucus, pus.
- β‘ Abdominal pain, tenderness, distension.
- π« Tachycardia (β 30 bpm on sitting suggests hypovolaemia).
- β¬οΈ JVP, poor cap refill, postural hypotension.
π Causes
- π₯ Inflammatory bowel disease (UC > Crohnβs) β acute flare.
- π¦ Pseudomembranous colitis β C. difficile (recent antibiotics).
- π Infectious colitis (travel, HIV, typhoid, amoebiasis).
- π Drug-induced colitis (NSAIDs, immunotherapy).
πΊοΈ Extent of Ulcerative Colitis
π¨ Clinical Features of Acute Severe Colitis
- Often toxic, feverish, dehydrated, unwell.
- π Rectal bleeding, diarrhoea, tenesmus.
- β‘ Abdominal cramps, distension, guarding, peritonism.
- Signs of shock if perforated.
β Key Questions
- π© Number of bowel motions per day?
- π©Έ Blood in stools?
- π‘οΈ Pyrexia?
- π« Pulse > 90 bpm?
- π§ͺ ESR or CRP elevated?
- π©Ί Haemoglobin level?
π¬ Investigations
- π FBC, U&E, LFTs, Mg, Ca, CRP, glucose.
- π§ͺ Stool: C. difficile, Salmonella, Shigella, Campylobacter, E. coli.
- π Immunocompromised β Giardia, Crypto, Isospora, CMV.
- π©» AXR daily if worsening (look for megacolon, perforation).
- π« CXR to exclude perforation.
- TPMT if Azathioprine likely; QuantiFERON if biologics planned.
π Truelove and Witts Criteria
| Parameter | Mild | Moderate | Severe |
| Bloody stools/day | <4 | 4β6 | >6 |
| Temperature | Afebrile | - | >37.8 Β°C |
| Heart rate | Normal | - | >90 bpm |
| Haemoglobin | >11 g/dL | 10.5β11 | <10.5 |
| ESR | <20 | 20β30 | >30 |
π οΈ Management of Acute Severe Colitis
- π Assess severity with Truelove & Witts.
- π Day 3: Stool freq > 8/day or CRP > 45 β 85% colectomy risk.
- π 1st-line: IV corticosteroids β but 1/3 wonβt respond.
- π
Day 4: If no improvement β escalate to rescue therapy.
- β οΈ Monitor for megacolon or perforation.
π Rescue Therapy
- π Infliximab 5 mg/kg IV β repeat at 2 & 6 weeks, then 8-weekly (check TB, Hep B).
- π Ciclosporin 2 mg/kg IV β monitor Mg & cholesterol, switch to Azathioprine later.
- πͺ Colectomy β if failed medical therapy; delay worsens prognosis.
π References
Cases β IBD: Acute Severe Colitis (ASC)
- Case 1 β Ulcerative Colitis Flare π§»:
A 26-year-old man with known ulcerative colitis presents with 12 bloody diarrhoeal stools/day, fever, and abdominal pain. Exam: tachycardia 120, tender but not peritonitic abdomen. CRP 120, Hb 95 g/L, albumin 28. AXR: no toxic megacolon.
Diagnosis: Acute severe ulcerative colitis flare.
Management: Admit, IV hydrocortisone 100 mg qds, IV fluids, VTE prophylaxis, stool cultures incl. C. difficile. If no improvement by day 3 β escalate (ciclosporin or infliximab).
- Case 2 β Fulminant Colitis with Toxic Megacolon β οΈ:
A 32-year-old woman presents with worsening UC flare: 15 bloody stools/day, fever, severe abdominal distension. Exam: peritonism, HR 130. AXR: dilated transverse colon 7.5 cm.
Diagnosis: Toxic megacolon complicating acute severe UC.
Management: Resuscitation, IV steroids, antibiotics, urgent surgical (subtotal colectomy with ileostomy) referral.
- Case 3 β Crohnβs Disease Acute Colitis πΏ:
A 40-year-old man with Crohnβs colitis presents with >10 bloody diarrhoeas/day, abdominal pain, fever. Exam: tender colon, HR 115, BP 95/60. CRP 150. CT abdomen: diffuse colitis, no perforation.
Diagnosis: Acute severe colitis due to Crohnβs disease.
Management: IV hydrocortisone; screen for TB/hepatitis prior to rescue biologics; MDT input with gastro + surgeons; early escalation to infliximab if steroid-refractory.
Teaching Commentary π§
Acute severe colitis = life-threatening flare of IBD (commonly UC, sometimes Crohnβs).
Truelove & Witts criteria (for UC): β₯6 bloody stools/day + systemic disturbance (HR >90, T >37.8Β°C, Hb <105, CRP >30).
β‘ Management = βIV steroids, fluids, VTE prophylaxis, stool cultures, surgical backupβ.
If no improvement at day 3 β βrescue therapyβ (ciclosporin or infliximab) or urgent colectomy.
Complications: toxic megacolon, perforation, sepsis.
Always involve surgeons early β mortality is much lower with timely colectomy than delayed intervention.