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  • Title: Endovascular Repair of the Thoracic or Thoracoabdominal Aorta Following the Frozen Elephant Trunk Procedure.
    Author: Haensig M, Schmidt A, Staab H, Steiner S, Scheinert D, Branzan D.
    Journal: Ann Thorac Surg; 2020 Mar; 109(3):695-701. PubMed ID: 31470013.
    Abstract:
    BACKGROUND: This study evaluated the outcomes of endovascular repair of the thoracoabdominal aorta following the frozen elephant trunk (fET) procedure. METHODS: Between October 2014 and July 2018, 249 patients underwent thoracic or thoracoabdominal endovascular aortic repair in our institution. Of these, 10 patients (50% male) underwent second-stage endovascular repair after previous fET implantation. Feasibility and outcomes were evaluated. RESULTS: The mean interval between fET implantation and the second-stage endovascular repair was 136 days (range, 14-282 days). Indications for second-stage endovascular repair were thoracoabdominal aortic aneurysm Crawford type I (n = 3) or Crawford type II (n = 4) and complicated residual aortic dissection after fET (n = 3). We implanted 4 branched custom-made devices and 4 off-the-shelf thoracic stent grafts. Two patients were treated using the provisional extension to induce complete attachment (PETTICOAT) technique through a percutaneous access. The median intensive care unit stay was 1 day (range, 0-3 days), and median hospital stay was 7 days (range, 5-12 days). Spinal cord preconditioning was performed in 70% of our patients with zero paraplegia at 30 days. Computed tomographic scans at 8.5 ± 11.4 months of follow-up showed complete false lumen thrombosis of all type B aortic dissections and 1 type III endoleak with constant aneurysm diameter. Branch patency was 100%. CONCLUSIONS: Second-stage endovascular repair after a previous fET is feasible with good midterm results. This staged hybrid procedure is extremely effective in patients whose aneurysms are confined both to the arch and thoracoabdominal aorta, leading to an excellent functional result. In case of favorable anatomy, endovascular repair in residual type B aortic dissection led to complete false lumen thrombosis.
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