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  • Title: Mid-term Outcomes of Endovascular Repair of Ruptured Thoraco-abdominal Aortic Aneurysms with Off the Shelf Branched Stent Grafts.
    Author: Hongku K, Sonesson B, Björses K, Holst J, Resch T, Dias NV.
    Journal: Eur J Vasc Endovasc Surg; 2018 Mar; 55(3):377-384. PubMed ID: 29306626.
    Abstract:
    OBJECTIVE: To assess the mid-term outcomes and feasibility of branched endovascular repair (b-EVAR) of ruptured thoracoabdominal aortic aneurysms (rTAAAs). METHODS: All patients undergoing b-EVAR of rTAAAs between 2011 and 2016 were included. Pre-, intra and postoperative imaging was reviewed to assess technical success, outcomes, and feasibility of b-EVAR in the emergent setting. RESULTS: Eleven emergency b-EVAR of rTAAAs (10 aneurysms and 1 chronic dissection) were performed using off-the-shelf (OTS) branched stentgrafts. Only 18% of patients complied to the anatomical instruction-for-use of the OTS device; a small aortic lumen and occluded target vessels were the main violations. Median operative time was 430 (IQR 395-629) minutes. Technical failure was 36% including one intraoperative death, one target vessel catheterization failure, one type Ia and one type III endoleak. Thirty-day mortality was 27%. Only early re-intervention was for the type Ia endoleak. Spinal cord ischemia occurred in 4 patients (30%), of which 2 recovered completely. Median clinical follow-up were 15 (IQR 7-39) months respectively. The median clinical follow-up index (FUI) was 0.65 (0.32-0.95). Overall survival was 75 ± 21.7% at 18 months. Four branch occlusions occurred; one renal stent occlusion led to permanent hemodialysis. Branch patency was 87.5 ± 8.3% and 72.2 ± 12% at 1 and 2 years, respectively. One stentgraft migrated but no late major endoleak occurred. CONCLUSION: Emergency b-EVAR of rTAAA with OTS device is feasible despite a low anatomical suitability. With proper adjunctive procedures, it can be offered to most hemodynamically stable patients. These time-consuming complex procedures are not suitable for unstable patients. Often the procedure is done as life-saving in the emergency setting and reinterventions may be needed later. Consequently, the success rates are lower than in the elective setting. These results need to be confirmed by larger studies and longer follow-up.
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