Outcome of Nellix-EVAS: single center mid-term results

• Published in: CVIR endovascular Vol. 2; no. 1; pp. 13 - 5
• Main Authors: Najafi, Arash, Sheikh, Gabriel Tobias, Wigger, Pius, Binkert, Christoph A.
• Format: Journal Article
• Language: English
• Published: Cham Springer International Publishing 23.04.2019; Springer Nature B.V; SpringerOpen
• Subjects: Abdomen; Aneurysms; Coronary vessels; Embolization; Endoleak; EVAS; Imaging; Interventional Radiology; Medicine; Medicine & Public Health; Migration; Mortality; Nellix; Original; Original Article; Patients; Radiology; Short term; Stents; Nellix; EVAS; Endoleak; Migration
• ISSN: 2520-8934; 2520-8934
• DOI: 10.1186/s42155-019-0058-0

Background Endovascular aortic sealing (EVAS) using the Nellix system was a new approach to reduce the frequency of type II endoleaks after endovascular aortic repair. We analyzed the mid-term results, specifically looking at device migration, endoleaks and subsequent necessary secondary interventions. Results Ten patients underwent elective EVAS treatment during our study period. 7 patients were within the IFU while 3 patients had a proximal neck shorter than 10 mm. Technical success rate was 100% and there were no short-term vascular complications. One patient died from urosepsis 14 days after the procedure and was excluded from further analysis. A total of 6 out of 9 patients (67%) experienced device complications such as proximal graft kinking, limb separation or caudal migration. 5 also showed type Ia endoleak. Discussion While no complication occurred short-term (up to 12 months), the Nellix system showed a high percentage of limb separation, caudal graft migration, and type Ia endoleak on mid-term follow-up, likely due to insufficient proximal anchoring of the device. Possible salvage treatments are discussed.