Nonocclusive mesenteric ischemia remains a diagnostic dilemma
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Updated: Nov 6, 2026
Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
T J Howard1, L A Plaskon, E A Wiebke
1Department of Surgery, Indiana University School of Medicine, Indianapolis, 46202, USA.
Background:
Despite reports of low mortality and high bowel-salvage rates in nonocclusive mesenteric ischemia (NOMI), our experience has been much less favorable. This study analyzes our experience with NOMI.
Patients And Methods:
A retrospective chart review (1979 to 1992) identified 113 patients with acute mesenteric ischemia, of whom 13 (12%) met our criteria for NOMI.
Results:
Patients were grouped into early and late presenters. The 5 early presenters were women, younger (mean age [+/- SD] 50 +/- 5.8 years), with no risk factors, and had vague symptoms leading to a delay in diagnosis. The 7 late presenters were older (mean age [+/- SD] 63 +/- 5.3 years) with identifiable risk factors; all had bowel infarction at the time of initial diagnosis.
Conclusions:
Vague symptoms and a wide range of patients at risk make early diagnosis of NOMI uncommon. In the absence of early diagnosis, bowel resection with its high morbidity and mortality remains the only applicable treatment option in the vast majority of patients.
Insights
Nonocclusive mesenteric ischemia (NOMI) presents with vague symptoms, delaying diagnosis and leading to poor outcomes. Early detection is crucial, as delayed diagnosis necessitates extensive bowel resection, increasing morbidity and mortality.
Area of Science:
- Gastroenterology
- Vascular Surgery
- Critical Care Medicine
Background:
- Nonocclusive mesenteric ischemia (NOMI) is often reported with favorable outcomes.
- However, clinical experience suggests NOMI may have higher morbidity and mortality.
- This study examines institutional experience with NOMI.
Purpose of the Study:
- To analyze the clinical course and outcomes of patients diagnosed with NOMI.
- To identify factors associated with delayed diagnosis and poor prognosis in NOMI.
Main Methods:
- Retrospective chart review of patients with acute mesenteric ischemia between 1979 and 1992.
- Identification of patients meeting NOMI criteria.
- Classification of patients into early and late presenters based on diagnosis timing.
Main Results:
- 13 patients (12%) met NOMI criteria.
- Early presenters (n=5) were younger women with vague symptoms and delayed diagnosis.
- Late presenters (n=7) were older, had risk factors, and presented with established bowel infarction.
Conclusions:
- Early diagnosis of NOMI is challenging due to vague symptoms and diverse patient risk factors.
- Delayed diagnosis significantly increases the likelihood of bowel resection.
- Bowel resection in advanced NOMI is associated with high morbidity and mortality.
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