• J. Vasc. Surg. · Apr 2016

    Multicenter Study Observational Study

    Treatment of sac expansion after endovascular aneurysm repair with obliterating endoaneurysmorrhaphy and stent graft preservation.

    • Pierre Maitrias, Adrien Kaladji, Didier Plissonnier, Sébastien Amiot, Jean Sabatier, Marc Coggia, Jean-Luc Magne, Thierry Reix, and Association Universitaire de Recherche en Chirurgie Vasculaire (AURC).
    • Department of Vascular Surgery, Amiens University Hospital, Amiens, France. Electronic address: maitrias.pierre@chu-amiens.fr.
    • J. Vasc. Surg. 2016 Apr 1; 63 (4): 902-8.

    BackgroundPersistent type II endoleaks (T2Ls) with sac enlargement after endovascular abdominal aortic aneurysm repair are still of concern in view of the potential for rupture. Current treatments (embolization and stent graft [SG] explantation) are associated with lack of efficacy or high perioperative morbidity and mortality. This study evaluated an alternative technique that combines sacotomy, ligation of patent back-bleeding vessels, and SG preservation for T2L or unspecified endoleak repair.MethodsThis multicenter study in France included 28 patients (27 men; median age, 78 years). Twenty-one patients (75%) had a bifurcated SG (including 3 fenestrated SGs) and seven (25%) had an aortouni-iliac SG (2 for ruptured aneurysm). Unsuccessful embolization had been performed in 10 patients (36%). Four patients (14%) presented sac enlargement with no endoleak visible on computed tomography. The origin of the endoleak remained unspecified in three patients 3 (11%). The median diameter of the aneurysmal sac was 78 mm (vs 55 mm at the time of endovascular abdominal aortic aneurysm repair) after a median follow-up of 24 months.ResultsA transperitoneal approach was used in 21 patients (75%) and a retroperitoneal approach was used in seven (25%). A guidewire was placed in the supraceliac aorta in 14 patients, and an occlusion balloon was temporarily inflated in six. Aortic cross-clamping was performed in five patients. T2Ls were identified in 26 patients, and associated with a distal type I endoleak in 1 patient, a type III endoleak in 3, and a type IV endoleak in 1. Two patients presented with endotension. All the endoleaks were treated successfully, with a mean operating time of 120 minutes and a mean blood loss of 450 mL. One SG was explanted 12 days after the procedure because of early infection. One patient died during SG explantation for an aortoduodenal fistula 26 months after the endoaneurysmorrhaphy. During a median follow-up of 24 months, the control computed tomography scan showed shrinkage of the aneurysmal sac with stable diameters in all patients. No missed T2Ls, no recurrence of T2L, and no SG migration or disjunction was observed.ConclusionsObliterating endoaneurysmorrhaphy with SG preservation can be considered as an alternative to SG removal in cases of persistent T2L responsible for aneurysmal sac enlargement after embolization failure. By avoiding extensive dissection for surgical aortic cross-clamping, minimizing hemodynamic changes, and reducing blood loss and operating time, this procedure can be performed even in patients initially considered unfit for surgery.Copyright © 2016 Society for Vascular Surgery. Published by Elsevier Inc. All rights reserved.

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