{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,3]],"date-time":"2026-05-03T22:45:27Z","timestamp":1777848327759,"version":"3.51.4"},"reference-count":27,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2018,11,28]],"date-time":"2018-11-28T00:00:00Z","timestamp":1543363200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["J Endovasc Ther"],"published-print":{"date-parts":[[2019,2]]},"abstract":"<jats:p>Purpose: To investigate the incidence and extent of stent frame movement after endovascular aneurysm sealing (EVAS) in the abdominal aorta and its relationships to aneurysm growth and the instructions for use (IFU) of the Nellix endograft. Methods: A retrospective single-center study was conducted to review the clinical data and computed tomography (CT) images of 75 patients (mean age 76\u00b17.6 years; 57 men) who underwent infrarenal EVAS and had a minimum 1-year follow-up. The first postoperative CT scan at 1 month and the subsequent scans were used to measure the distances between the proximal end of the stent frames and a reference visceral vessel using a previously validated technique. Device migration was based on the Society of Vascular Surgery definition of &gt;10-mm downward movement of either Nellix stent frame in the proximal landing zone; a more conservative proximal displacement measure (downward movement \u2a7e4 mm) was also recorded. Patients were categorized according to adherence to the old (2013) or new (2016) Nellix IFU. Aneurysm diameter was measured for each scan; a change \u2a7e5 mm was deemed indicative of aneurysm growth. Results: Over a median follow-up of 24 months (range 12\u201348), proximal displacement \u2a7e4 mm occurred in 42 (56%) patients and migration &gt;10 mm in 16 (21%), with similar incidences in the right and left stent frames. Proximal displacement was significantly more frequent among patients whose anatomy did not conform to any IFU (p=0.025). Presence of aneurysm growth \u2a7e5 mm was observed in 14 (19%) patients and was significantly associated with proximal displacement \u2a7e4 mm (p=0.03). Conclusion: Infrarenal EVAS may be complicated by proximal displacement and migration, particularly when performed outside the IFU. The definition of migration used for endovascular aneurysm repair may be inappropriate for EVAS; a new consensus on definition and measurement technique is necessary.<\/jats:p>","DOI":"10.1177\/1526602818814548","type":"journal-article","created":{"date-parts":[[2018,11,28]],"date-time":"2018-11-28T05:29:46Z","timestamp":1543382986000},"page":"54-61","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":9,"title":["Stent Frame Movement Following Endovascular Aneurysm Sealing in the Abdominal Aorta"],"prefix":"10.1177","volume":"26","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8390-9951","authenticated-orcid":false,"given":"Asma","family":"Yafawi","sequence":"first","affiliation":[{"name":"Institute of Translational Medicine, University of Liverpool, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard G.","family":"McWilliams","sequence":"additional","affiliation":[{"name":"Institute of Translational Medicine, University of Liverpool, UK"},{"name":"Department of Radiology, Royal Liverpool & Broadgreen University Hospital, Liverpool, UK"},{"name":"School of Physical Sciences, University of Liverpool, UK"},{"name":"Liverpool Cardiovascular Institute, Liverpool, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Robert K.","family":"Fisher","sequence":"additional","affiliation":[{"name":"Liverpool Cardiovascular Institute, Liverpool, UK"},{"name":"Liverpool Vascular & Endovascular Service, Liverpool, UK"},{"name":"School of Engineering, University of Liverpool, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrew","family":"England","sequence":"additional","affiliation":[{"name":"Department of Radiography, University of Salford, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria","family":"Karouki","sequence":"additional","affiliation":[{"name":"Liverpool Vascular & Endovascular Service, Liverpool, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francesco","family":"Torella","sequence":"additional","affiliation":[{"name":"Institute of Translational Medicine, University of Liverpool, UK"},{"name":"School of Physical Sciences, University of Liverpool, UK"},{"name":"Liverpool Cardiovascular Institute, Liverpool, UK"},{"name":"Liverpool Vascular & Endovascular Service, Liverpool, UK"},{"name":"Institute of Medicine, University of Chester, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2018,11,28]]},"reference":[{"key":"bibr1-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejvs.2011.03.007"},{"key":"bibr2-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2015.07.096"},{"key":"bibr3-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1177\/1526602815618492"},{"key":"bibr4-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2015.03.031"},{"key":"bibr5-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1177\/1526602816664365"},{"key":"bibr6-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1177\/1526602816678201"},{"key":"bibr7-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2016.09.024"},{"key":"bibr8-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1177\/1526602818766864"},{"key":"bibr9-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2018.01.031"},{"key":"bibr10-1526602818814548","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvs.2016.02.053"},{"key":"bibr11-1526602818814548","unstructured":"O\u2019Quinn S. 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