Percutaneous Mechanical Thrombectomy for Acute Superior Mesenteric Artery Embolism: Preliminary Experience in Five Cases.

Background: This study was performed to summarize our experience in treating acute superior mesenteric artery embolism (SMAE) by percutaneous mechanical thrombectomy (PMT). Methods: The clinical data of five patients with acute SMAE treated by PMT in our center from October 2015 to May 2018 were retrospectively analyzed. PMT was performed under local anesthesia. Access was established via the femoral artery or brachial artery. Thrombectomy was performed on the superior mesenteric artery using a 6F Rotarex catheter (Straub Medical, Wangs, Switzerland). Results: Technical success of PMT was achieved in all five patients; emboli were completely removed in three patients and partially removed in two patients. No PMT-related complications were noted after surgery. Four patients were smoothly discharged from the hospital after their symptoms were relieved. One patient still had symptoms of intestinal ischemia after the operation, and massive small intestinal necrosis was found by exploratory laparotomy. Intestinal resection was performed, and the patient died 4 months later. Conclusions: PMT by the Rotarex system is a minimally invasive, safe, and effective technique in removing SMAE. Early application of PMT can avoid intestinal necrosis.