Dissection of the Superior Mesenteric Artery

Observe the prognosis of patients after undergoing specific operations. Specific surgery: Use femoral artery or brachial artery to implant naked stent (stent with diameter ≤7mm, stents with \>7mm are not restricted) to restore the blood flow of the true lumen superior mesenteric artery. If the false cavity is large, it can be combined with a spring coil to assist embolization. Anticoagulant therapy should be performed for at least 1 day after surgery. Anticoagulant drugs are not restricted. After discharge from the hospital, the double antibody should be taken for 3 months, and the monoclonal antibody should be maintained for at least 1 year.