Overview
Inferior mesenteric artery embolus refers to obstruction of the inferior mesenteric artery, typically leading to ischemia in the left colon, rectum, and parts of the sigmoid colon, often presenting with acute abdominal pain and potentially life-threatening complications 1.Diagnosis
Clinical Presentation: Acute abdominal pain, often localized to the left lower quadrant 1.
Imaging: CT angiography is crucial for identifying the embolus and assessing extent of ischemia 1.
Laboratory Tests: Elevated inflammatory markers and lactate levels may support the diagnosis 1.
Doppler Ultrasound: Can be useful for initial screening but CT angiography is preferred for definitive diagnosis 1.Management
First-Line Treatment: Urgent endovascular revascularization or surgical embolectomy to restore blood flow 1.
Anticoagulation: Initiate systemic anticoagulation post-revascularization to prevent further clot propagation 1.
Supportive Care: Aggressive fluid resuscitation, monitoring for bowel necrosis, and potential bowel resection if ischemia progresses 1.Special Populations
Pregnancy: Management strategies are extrapolated from general guidelines due to limited specific data; prioritize maternal safety while considering fetal well-being 1.
Elderly: Tailor treatment intensity based on overall health status and comorbidities; endovascular approaches may be preferred to minimize surgical risk 1.
Comorbidities: Consider the impact of comorbidities on surgical risk and tailor revascularization strategies accordingly 1.Key Recommendations
Urgent Imaging with CT Angiography for definitive diagnosis and assessment of embolus extent (Evidence: Strong 1).
Endovascular Revascularization or Surgical Embolectomy as first-line treatment to restore blood flow (Evidence: Strong 1).
Initiate Systemic Anticoagulation Post-Revascularization to prevent recurrent emboli (Evidence: Moderate 1).References
1 Koelemay MJ, Geelkerken RH, Kärkkäinen J, Leone N, Antoniou GA, de Bruin JL et al.. Editor's Choice - European Society for Vascular Surgery (ESVS) 2025 Clinical Practice Guidelines on the Management of Diseases of the Mesenteric and Renal Arteries and Veins. European journal of vascular and endovascular surgery : the official journal of the European Society for Vascular Surgery 2025. link