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  • Title: Fenestrated and chimney endografts for juxtarenal aneurysms: early and midterm results.
    Author: Suominen V, Pimenoff G, Salenius J.
    Journal: Scand J Surg; 2013; 102(3):182-8. PubMed ID: 23963033.
    Abstract:
    AIM: To assess the early and short-term outcome of fenestrated and chimney grafting for juxtarenal aortic aneurysms. MATERIAL AND METHODS: A prospective vascular registry of 28 patients who had undergone elective primary endovascular repair for abdominal aortic aneurysm between December 2007 and August 2011 with infrarenal neck anatomy unacceptable for conventional endovascular repair. Fenestrated endografts were designed based on reconstructed computed tomography (CT) data by the authors. Off-the-shelf grafts and stents were used for chimney cases. Patients were followed up until 31 May 2012. RESULTS: A total of 21 (75%) patients were treated with fenestrated endografts, while 7 (25%) received chimney grafts. The mean aneurysm diameter was 65 mm (standard deviation = 7 mm) and the median neck length 2.5 mm (range: 0-10 mm). Altogether, 63 (mean = 2.3/patient) visceral arteries were incorporated (42 renal, 21 superior mesenteric arteries). The overall primary technical success rate was 93% (one type I and one type III endoleak). The mean follow-up was 22 months (standard deviation: 14 months). The primary type III endoleak resolved spontaneously with thrombosis of the target vessel, while the patient with primary type I endoleak died of acute myocardial infarction 3 weeks after the procedure. Two late endoleaks developed: one type II endoleak without aneurysm sac growth remains under surveillance, while in another patient, multiple attempts to treat type I endoleak proved unsuccessful and the patient later died of gastrointestinal bleeding. A total of 4 (14%) patients so far required additional procedures. Two patients died within 30 days of the device implantation and another six during the follow-up. No rupture occurred. The cumulative survival for patients with fenestrated endografts was 85% at 1 year and for those treated with chimney technique 57%. CONCLUSIONS: The treatment of juxtarenal aortic aneurysms seems to be feasible by exploiting various endovascular techniques. Even with a low volume of cases, good immediate and short-term results can be achieved, especially with fenestrated endografts.
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