[Multidisciplinary expert consensus on acute mesenteric arterial ischemia (2026 edition)].

Acute mesenteric arterial ischemia refers to the sudden obstruction of blood flow in the main trunk or branches of the mesenteric arteries, leading to intestinal ischemia and potentially necrosis. This is a critical abdominal emergency with high mortality, poor prognosis, and a significant risk of misdiagnosis. This consensus focuses on acute mesenteric arterial ischemia (excluding isolated superior mesenteric artery dissection and aortic dissection-related ischemia) and integrates the latest guidelines and evidence from domestic and international sources, including the European Society for Vascular Surgery, the World Society of Emergency Surgery, and the Chinese Medical Association. It emphasizes advancements in minimally invasive surgical techniques for the treatment of acute mesenteric arterial ischemia. The document offers expert consensus recommendations for selective, minimally invasive diagnostic and therapeutic pathways, based on the European Society of Cardiology's evidence grading system. Developed by experts in vascular surgery, gastrointestinal surgery, and emergency medicine, it covers anatomy, epidemiology, risk factors, diagnosis, treatment, and the importance of multidisciplinary collaboration. The goal is to reduce misdiagnosis, improve the timeliness of reperfusion, and enhance multidisciplinary collaboration, thereby providing updated, comprehensive guidelines for the clinical management of acute mesenteric arterial ischemia.