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  • Title: Endovascular treatment options for complex abdominal aortic aneurysms.
    Author: Ronchey S, Serrao E, Kasemi H, Pecoraro F, Fazzini S, Alberti V, Mangialardi N.
    Journal: J Vasc Interv Radiol; 2015 Jun; 26(6):842-54. PubMed ID: 25887934.
    Abstract:
    PURPOSE: To report short-term and midterm outcomes of endovascular aneurysm repair (EVAR) of complex aneurysms requiring revascularization of visceral arteries. MATERIALS AND METHODS: Prospective data were collected from patients deemed unsuitable for conventional EVAR and conventional surgery who were treated with different endovascular approaches according to the clinical presentation of the aneurysm. Custom-made fenestrated endovascular aneurysm repair (CM f-EVAR) was used in the elective setting, homemade fenestrated endovascular aneurysm repair (HM f-EVAR) or HM f-EVAR combined with chimney endovascular aneurysm repair (ch-EVAR) was used in the emergent setting in patients with hemodynamic stability, and ch-EVAR was used in unstable cases. The study included 34 consecutive patients. Primary outcomes measured were perioperative mortality and morbidity, renal function impairment (RFI), target vessel patency, and survival at mean follow-up. RESULTS: In the CM f-EVAR group (7 of 34 patients; 20.6%), an intraoperative type III endoleak (1 of 7 patients; 14%) sealed spontaneously. At 8.9 months of follow-up, 1 (1 of 7 patients; 14%) death and 1 (1 of 7 patients; 14%) episode of transient RFI were documented. Visceral vessel patency rate was 95.2%. In the HM f-EVAR group (4 of 34 patients; 11.7%) and the combination of HM f-EVAR and ch-EVAR group (3 of 34 patients; 8.8%), no complications were observed at 17.3 months of follow-up. In the ch-EVAR group (20 of 34 patients; 58.8%), visceral patency was 95% at 30.9 months of follow-up. Two cases of transient RFI and 2 cases of permanent RFI were registered (2 of 20 patients; 10%). One asymptomatic renal artery branch occlusion was observed at 11 months of follow-up. No endoleaks were documented. CONCLUSIONS: Endovascular aneurysm repair techniques including CM f-EVAR, HM f-EVAR or HM f-EVAR in combination with ch-EVAR, and ch-EVAR are valid tools to maintain blood flow in visceral arteries during treatment of complex aortic aneurysms. The proposed interventional protocol based on clinical presentation was feasible in all cases.
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