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  • Title: Stented elephant trunk procedure with left subclavian artery transposition for acute type B dissection with distal arch involvement.
    Author: Zhu JM, Qi RD, Chen L, Liu W, Li CN, Fan ZM, Sun LZ.
    Journal: J Thorac Cardiovasc Surg; 2015 Nov; 150(5):1160-5. PubMed ID: 26344688.
    Abstract:
    OBJECTIVE: Complete or partial supra-aortic debranching, after thoracic endovascular aortic repair, is appealing treatment for complicated acute type B dissection (ABAD) with aortic arch involvement (AAI) because of reduced surgical trauma. However, unsatisfactory outcomes have been reported. We retrospectively reviewed our experience of left subclavian artery (LSCA) transposition with stented elephant trunk (SET) implantation for complicated ABAD with distal AAI. METHODS: From April 2011 to December 2014, 19 patients (all men; mean age: 44 years) who had complicated ABAD and distal AAI underwent LSCA transposition with SET implantation via a median sternotomy under hypothermic cardiopulmonary bypass with selective cerebral perfusion. Preoperative renal dysfunction was observed in 3 patients, visceral ischemia in 2 patients, and lower-limb ischemia in 1 patient. RESULTS: No in-hospital deaths occurred. Seventeen patients required mechanical ventilation for <24 hours, and 2 cases for <48 hours. The mean time of mechanical ventilation and duration of stay in the intensive care unit was 18 ± 6 hours and 44 ± 16 hours, respectively. Ischemia of the viscera and lower limbs after surgery was ameliorated. Continuous renal replacement therapy was not required in 3 patients who had preoperative renal dysfunction. Complete thrombosis of the false lumen at the distal end of the SET was observed in 17 of 18 (94.4%) patients during follow-up. CONCLUSIONS: This method preserves autologous brachiocephalic vessels, excludes the false lumen, promotes thrombosis and remodeling of the distal aorta, and repairs proximal aortic lesions simultaneously. Satisfactory surgical outcomes and follow-up results were achieved using LSCA transposition with SET implantation.
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