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Ischemic colitis: patterns and prognosis.

W E Longo1, G H Ballantyne, R J Gusberg

  • 1Department of Surgery, Yale University School of Medicine, New Haven, Connecticut.

Diseases of the Colon and Rectum
|August 1, 1992
PubMed
Summary
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Nonocclusive ischemic colitis affects the large intestine, often without clear causes. While many patients improve with nonoperative care, surgery is sometimes needed, carrying a significant mortality risk, especially for elderly or diabetic individuals.

Area of Science:

  • Gastroenterology
  • Colorectal Surgery
  • Vascular Surgery

Background:

  • Nonocclusive ischemia of the large intestine, or ischemic colitis, presents a diagnostic and therapeutic challenge.
  • Understanding risk factors and outcomes is crucial for patient management.

Purpose of the Study:

  • To analyze the clinical characteristics, management strategies, and outcomes of patients diagnosed with nonocclusive ischemic colitis.
  • To identify factors associated with a poor prognosis in ischemic colitis.

Main Methods:

  • Retrospective review of 47 patients diagnosed with nonocclusive ischemic colitis over a seven-year period.
  • Data collection included patient demographics, comorbidities, clinical presentation, diagnostic delay, affected colonic segments, treatment modalities, and outcomes.

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Main Results:

  • The mean age was 56.2 years, with a male predominance. Common comorbidities included diabetes (17%) and renal failure (5%).
  • Right colon involvement occurred in 46% of cases. Nonoperative management (bowel rest, antibiotics) was successful in 15 of 16 patients.
  • Operative intervention was required in 31 patients, with a mortality rate of 29%. Ischemia recurred in 20% of patients undergoing second-look laparotomy.

Conclusions:

  • Ischemic colitis can occur without obvious predisposing factors and may involve any colonic segment, often necessitating surgical intervention.
  • Elderly patients, diabetics, and those with post-aortic surgery or hypotension-related ischemia face a poorer prognosis.