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Ischemic colitis — Clinical Guidelines

Overview

Ischemic colitis (IC) is a condition characterized by reduced blood flow to the colon, leading to ischemic injury and potentially necrosis, often presenting as acute abdominal pain and bloody diarrhea. It can arise from various etiologies, including medication use, surgical interventions, and systemic diseases 1 5 6 7 12.

Diagnosis

Clinical Presentation: Acute abdominal pain, bloody diarrhea, and sometimes fever 1 12.

Imaging: CT angiography or MRI may show mural thickening and vascular abnormalities 1 9.

Endoscopy: Reveals mucosal changes such as erythema, ulcerations, and pseudomembranes 10.

Laboratory Tests: Elevated inflammatory markers and serum procalcitonin (PCT) levels correlate with severity 4.

Colonoscopy: Essential for direct visualization and grading of severity 4.

Management

Conservative Management: Initial treatment often includes bowel rest, intravenous fluids, and broad-spectrum antibiotics 1 4.

Surgical Intervention: Indicated for severe cases with necrosis, perforation, or refractory symptoms; may involve resection and colostomy 2 12.

Monitoring: Regular assessment of PCT levels to guide therapeutic decisions 4.

Medication Review: Evaluate and discontinue potential causative agents like certain bowel cleansers or drugs associated with IC 1 5 6 7.

Special Populations

Postoperative Patients: Particularly vulnerable after infrarenal aortic surgery; close monitoring required 8 12.

Comorbidities: Patients with conditions like Kawasaki disease may present with colonic involvement requiring tailored management 11.

Key Recommendations

Evaluate and discontinue potential causative medications associated with ischemic colitis in patients presenting with symptoms 5 6 7 (Evidence: Moderate).

Utilize serum procalcitonin levels to assess severity and guide treatment decisions in postoperative ischemic colitis 4 (Evidence: Moderate).

Consider emergent surgical intervention for patients with signs of necrosis, perforation, or refractory symptoms 2 12 (Evidence: Weak).

Monitor closely postoperative patients following abdominal aortic aneurysm repair due to increased risk of ischemic colitis 8 12 (Evidence: Moderate).

References

1 Luo M, Li W, Wang X, Zhou Y. Oral bowel cleansers and ischemic colitis risk: A real-world disproportionality analysis. PloS one 2025. link 2 Beghdadi N, Reitano E, Cochennec F, Desgranges P, Amiot A, Sobhani I et al.. Predictors of mortality following emergency open colectomy for ischemic colitis: a single-center experience. World journal of emergency surgery : WJES 2020. link 3 Sotelo R, Medina LG, Husain FZ, Khazaeli M, Nikkhou K, Cacciamani GE et al.. Robotic-assisted laparoscopic repair of rectovesical fistula after Hartmann's reversal procedure. Journal of robotic surgery 2019. link 4 Cossé C, Sabbagh C, Fumery M, Zogheib E, Mauvais F, Browet F et al.. Serum procalcitonin correlates with colonoscopy findings and can guide therapeutic decisions in postoperative ischemic colitis. Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver 2017. link 5 Bielefeldt K. Ischemic Colitis as a Complication of Medication Use: An Analysis of the Federal Adverse Event Reporting System. Digestive diseases and sciences 2016. link 6 Nguyen TQ, Lewis JH. Sumatriptan-associated ischemic colitis: case report and review of the literature and FAERS. Drug safety 2014. link 7 Salk A, Stobaugh DJ, Deepak P, Ehrenpreis ED. Ischemic colitis with type I interferons used in the treatment of hepatitis C and multiple sclerosis: an evaluation from the food and drug administration adverse event reporting system and review of the literature. The Annals of pharmacotherapy 2013. link 8 Darras S, Paineau J, Patra P, Goueffic Y. Prognostic factors of ischemic colitis after infrarenal aortic surgery. Annals of vascular surgery 2011. link 9 Nguyen KT, Place CR, Mackie KW. Localized colonic ischemia simulating annular carcinoma. Canadian Association of Radiologists journal = Journal l'Association canadienne des radiologistes 1987. link 10 Lee HH, Agha FP, Owyang C. Ischemic colitis masquerading as colonic tumor: an unusual endoscopic presentation. Endoscopy 1986. link 11 Fan ST, Lau WY, Wong KK. Ischemic colitis in Kawasaki disease. Journal of pediatric surgery 1986. link80107-5) 12 Welling RE, Roedersheimer LR, Arbaugh JJ, Cranley JJ. Ischemic colitis following repair of ruptured abdominal aortic aneurysm. Archives of surgery (Chicago, Ill. : 1960) 1985. link

Ischemic colitis