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Published on: October 20, 2023
Acute mesenteric ischaemia
N J Menon1, A M Amin, A Mohammed
1Academic Department of Surgery, The Royal Free and University College Medical School, London, UK.
Abstract:
Acute Mesenteric Ischaemia (AMI) is an uncommon vascular emergency where the diagnosis is often difficult and overlooked and delay in diagnosis results in a grave outcome. Although extravascular events like intussusception, volvulus, strangulated hernia and adhesive obstruction in neglected cases can result intestinal gangrene, this contribution will be limited to acute mesenteric ischaemia as a primary event. AMI consists of four pathologic processes (arterial thrombosis, arterial embolism, Non Occlusive Mesenteric Ischaemia (NOMI) and mesenteric venous thrombosis (MVT)) with similar clinical presentation and one potentially fatal pathological endpoint- intestinal gangrene. The clinical setting and the patient's risk profile often give the clue to the etiological process while the presentation is dominated by severe unrelenting abdominal pain out of proportion to the physical findings. The key to the successful management depends on the surgeon's ability to suspect the diagnosis, pursue appropriate investigations and institute aggressive treatment. The mortality remains high due to difficulty and delay in the diagnosis.
Insights
Acute Mesenteric Ischaemia (AMI) is a rare vascular emergency with challenging diagnosis. Prompt recognition and treatment are crucial to prevent intestinal gangrene and improve patient outcomes.
Area of Science:
- Vascular Surgery
- Gastroenterology
- Emergency Medicine
Background:
- Acute Mesenteric Ischaemia (AMI) is an uncommon but critical vascular emergency.
- Delayed diagnosis of AMI often leads to severe complications, including intestinal gangrene and high mortality.
- AMI encompasses arterial thrombosis, embolism, Non-Occlusive Mesenteric Ischaemia (NOMI), and mesenteric venous thrombosis (MVT).
Purpose of the Study:
- To highlight the diagnostic challenges and critical management principles of Acute Mesenteric Ischaemia.
- To emphasize the importance of early suspicion and intervention in improving outcomes for AMI patients.
Main Methods:
- Review of pathological processes of AMI, including arterial and venous causes.
- Discussion of clinical presentation, emphasizing abdominal pain disproportionate to physical findings.
- Analysis of diagnostic clues from patient history and risk profiles.
Main Results:
- AMI presents with severe, unrelenting abdominal pain, often misleading physical examination findings.
- The etiological process can be suggested by the clinical setting and patient's risk factors.
- Successful management hinges on prompt diagnosis, appropriate investigations, and aggressive treatment.
Conclusions:
- Early suspicion and diagnosis are paramount for effective management of Acute Mesenteric Ischaemia.
- Despite advancements, high mortality rates persist due to diagnostic delays.
- Multidisciplinary collaboration is essential for timely intervention in AMI cases.
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