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Updated: Aug 11, 2026

Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Fatal nonocclusive mesenteric ischaemia: population-based incidence and risk factors
S Acosta1, M Ogren, N-H Sternby
1Department of Vascular Diseases, Malmö University Hospital, Malmö, Sweden. stefan.acosta@telia.com
Objectives:
To estimate the incidence and extension of visceral organ infarction, and to evaluate potential causes, in patients with autopsy-verified nonocclusive mesenteric ischaemia (NOMI) and transmural intestinal infarction.
Setting:
In Malmö, Sweden, the autopsy rate between 1970 and 1982 was 87%, creating possibilities for a population-based study.
Design:
Amongst 23 446 clinical autopsies, 997 cases were coded for intestinal ischaemia in a database. In addition, 7569 forensic autopsy protocols were analysed. In a nested case-control study within the clinical autopsy cohort, four NOMI-free controls, matched for gender, age at death and year of death, were identified for each fatal NOMI case to evaluate risk factors.
Results:
The overall incidence of autopsy-verified fatal NOMI was 2.0/100,000 person-years, increasing with age up to 40/100,000 person-years in octogenarians. Patients with stenosis of the superior mesenteric artery (SMA; n = 25) were older (P = 0.002) than those without (n = 37), and had more often a concomitant stenosis of the coeliac trunk (P < 0.001). Synchronous infarction in the liver, spleen or kidney occurred in one-fifth of all patients. Fatal cardiac failure [OR 2.9 (1.7-5.2)], history of atrial fibrillation [OR 2.2 (1.2-4.0)] and recent surgery [OR 3.4 (1.6-6.9)] were risk factors for fatal NOMI.
Conclusions:
Fatal heart failure was the leading cause of intestinal hypoperfusion, although stenosis of the SMA and coeliac trunk, atrial fibrillation and recent surgery contributed significantly. Collaboration across specialties seems to be of utmost importance to improve the prognosis.
Insights
Nonocclusive mesenteric ischemia (NOMI) is a serious condition, with fatal cases increasing in the elderly. Heart failure is a primary cause, alongside other risk factors like atrial fibrillation and recent surgery.
Area of Science:
- Gastroenterology
- Vascular Surgery
- Pathology
Background:
- Nonocclusive mesenteric ischemia (NOMI) and transmural intestinal infarction are severe conditions with high mortality.
- Estimating the incidence and causes of visceral organ infarction in NOMI patients is crucial for improving outcomes.
Purpose of the Study:
- To determine the incidence and extent of visceral organ infarction in autopsy-verified NOMI cases.
- To identify potential causes and risk factors associated with fatal NOMI.
Main Methods:
- A population-based study utilizing autopsy data from Malmö, Sweden (1970-1982).
- Analysis of 23,446 clinical and 7,569 forensic autopsy protocols.
- A nested case-control study matched for age, gender, and death year to identify NOMI risk factors.
Main Results:
- Overall incidence of fatal NOMI was 2.0/100,000 person-years, rising with age.
- Superior mesenteric artery (SMA) stenosis was associated with older age and coeliac trunk stenosis.
- Liver, spleen, or kidney infarction occurred in 20% of patients; fatal cardiac failure, atrial fibrillation, and recent surgery were significant risk factors.
Conclusions:
- Fatal heart failure is the leading cause of intestinal hypoperfusion in NOMI.
- SMA stenosis, coeliac trunk stenosis, atrial fibrillation, and recent surgery are significant contributing factors.
- Interdisciplinary collaboration is essential for improving NOMI patient prognosis.
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