Endovascular Treatment of Complex Aneurysms with the Use of Covera Stent Grafts
To characterize the short-term results of the Covera stent for the reconstruction of target vessels in complex aneurysms and assess the safety and efficacy of this stent.
The Covera self-expanding stent offers good short term patency in chimney, branched, and fenestrated EVAR procedures.
Caradu C, Dubourg A, Colacchip E, Midy D, Bérard X, Ducasse E. (2019). Endovascular Treatment of Complex Aneurysms with the Use of Covera Stent Grafts. J Vasc Interv Rad, 30:1942-1948. doi:10.1016/j.jvir.2019.05.004
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Nonrandomized, monocentric single-arm evaluation study
Figure 3. (a) Preoperative CT angiogram of an 84-year-old male patient showing a 60-mm type 3 thoracoabdominal aneurysm treated by using (b) a sandwich technique, with covered chimneys constructed using a self-expanding covered stent for the celiac trunk, the superior mesenteric artery, and both renal arteries. (c) The contrast-enhanced CT scan shows the positioning of the 4 self-expanding covered stents positioned between the 2 thoracic devices. (d) 3D reconstruction confirms the positioning of the devices and the preserved patency of the target arteries.
Intraoperative aneurysm occlusion was successful in 82.4% of patients; 2 gutter leaks, 1 type I endoleak, 6 type 2 endoleaks and 1 type 3 endoleak. Over the 10 ± 5-month observation period in this study, there was no evidence of target vessel occlusion. Two secondary procedures were required to address endoleak: a gutter endoleak and a type 3 endoleak in a fenestrated device.
Nicole A. Keefe, MD
Fellow, Interventional Radiology
Department of Radiology and Medical Imaging
University of Virginia