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Mechanical Thrombectomy Using the Solitaire AB Device for Acute Embolic Mesenteric Ischemia.

PURPOSE: To review preliminary efficacy and safety outcomes of mechanical thrombectomy using the Solitaire AB device combined with thromboaspiration for treatment of acute embolic occlusion of the superior mesenteric artery (SMA).

MATERIALS AND METHODS: Between October 2015 and October 2017, 9 patients (average age, 77 y; range, 62-84 y) presenting with acute mesenteric ischemia attributable to embolic occlusion at the stem of the SMA were retrospectively evaluated for mechanical thrombectomy using the Solitaire AB device combined with manual thromboaspiration. Adjunctive stent implantation was performed to correct pre-existing atherosclerotic stenosis or as a rapid recanalization solution after unsuccessful thrombectomy. Technical success was defined as successful deployment of the Solitaire device across the thrombus and successful retrieval of the device. Clinical success was defined as successful embolus retrieval and SMA recanalization. Adjunctive procedures and periprocedural complications were noted. Technical success, clinical success, and follow-up outcomes were assessed.

RESULTS: Technical success was achieved in all patients. Clinical success was achieved in 7 (78%) patients. An adjunctive stent was required in 3 (33%) patients, including 1 unsuccessful thrombectomy. All patients had notable relief from abdominal pain after the procedure. No device-related complications or distal embolization events were noted during the procedures. Bowel resection was prevented in all patients. In-hospital mortality was 11% (1/9). During median follow-up of 6 months (range, 3-12 months), all surviving patients remained symptom-free, and stent patency was achieved in all patients.

CONCLUSIONS: Preliminary outcomes suggest that mechanical thrombectomy using the Solitaire AB device with manual thromboaspiration is associated with rapid, effective, and safe recanalization for acute embolic occlusion at the stem of the SMA.

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