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Updated: Mar 29, 2026
Multimodality Diagnosis of Mesenteric Ischemia
Published on: July 21, 2023
Acute Mesenteric Ischemia
Neeraja Murali1, Sarah Lee1, Joseph P Martinez2
1Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA.
Abstract:
Acute mesenteric ischemia (AMI) presents variably based on etiology-arterial embolism (often from atrial fibrillation), arterial thrombosis (due to atherosclerosis), mesenteric venous thrombosis (linked to hypercoagulability), or nonocclusive ischemia (from low-flow states in critically ill patients). Diagnosis is confirmed with biphasic multidetector CT angiography. Early recognition is essential, as delayed diagnosis worsens outcomes. Treatment varies from anticoagulation to surgery or endovascular intervention. Resuscitation, rapid diagnosis, and revascularization ("3 R"s) are key. AMI should not be ruled out with normal laboratories if the patient has risk factors for the disease. Multidisciplinary collaboration is crucial to improve outcomes and preserve bowel viability.
Insights
Acute mesenteric ischemia (AMI) has varied causes, including arterial embolism and thrombosis. Early diagnosis with CT angiography and prompt treatment, including resuscitation and revascularization, are crucial for better patient outcomes.
Area of Science:
- Vascular Surgery
- Gastroenterology
- Radiology
Background:
- Acute mesenteric ischemia (AMI) is a vascular emergency with diverse etiologies.
- Causes include arterial embolism, arterial thrombosis, venous thrombosis, and nonocclusive mesenteric ischemia.
- Delayed diagnosis significantly worsens patient prognosis and bowel viability.
Purpose of the Study:
- To summarize the varied presentations, diagnostic modalities, and treatment strategies for acute mesenteric ischemia.
- To emphasize the importance of early recognition and multidisciplinary collaboration in managing AMI.
Main Methods:
- Diagnosis is primarily confirmed using biphasic multidetector CT angiography.
- Clinical suspicion should be maintained in patients with risk factors, even with normal laboratory results.
Main Results:
- AMI presentation varies based on the underlying cause.
- Multidetector CT angiography is key for accurate diagnosis.
- Timely intervention is critical for preserving bowel viability.
Conclusions:
- Prompt diagnosis and intervention, guided by CT angiography, are essential for managing AMI.
- A multidisciplinary approach involving resuscitation, rapid diagnosis, and revascularization (the "3 R"s) improves outcomes.
- Do not exclude AMI based solely on normal lab values if clinical risk factors are present.
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