Initial clinical experience with a sac-anchoring endoprosthesis for aortic aneurysm repair

Donayre, Carlos E.; Zarins, Christopher K.; Krieviņš, Dainis; Holden, Andrew; Hill, Andrew; Calderas, Carlos; Velez, J.H.; White, Rodney A.

doi:10.1016/j.jvs.2010.09.009

Cited by 100 publications

(105 citation statements)

References 17 publications

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“…Technical suitability for EVAS was determined by two of three senior clinicians (the authors) on arterial phase computed tomography images and confirmed by a multidisciplinary team reviewing, weekly, all prospective elective patients under consideration for aortic aneurysm repair. The EVAS technique has been described elsewhere 1,9 . In brief, two suitable Nellix® catheters are positioned in the infrarenal aorta and their respective stents inflated, simultaneously, to a pressure of 7 atm.…”

Section: Methodsmentioning

confidence: 99%

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Observations on Surveillance Imaging After Endovascular Sealing of Abdominal Aortic Aneurysms With the Nellix System

et al. 2015

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The authors declare no conflict of interest and no sources of funding. AbstractPurpose. Endovascular aneurysm sealing (EVAS), performed with the Nellix® endoprosthesis, is a new technique to treat patients with infrarenal abdominal aortic aneurysm. We describe findings on post-EVAS imaging, discuss their interpretation, and consider their potential implications on EVAS planning and performance.Methods. We performed a retrospective review of perioperative imaging in consecutive patients undergoing elective EVAS at our centre. We systematically reviewed perioperative imaging specifically looking for endobag collapse, aortic thrombus compression and aortic wall disruption, according to definitions set a priori.

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Section: Methodsmentioning

confidence: 99%

“…Currently there are only nine published original studies on EVAS [1][2][3][4][5][6][7][8][9] , including two case reports [6][7] and one in vitro study 5 . The aim of this paper is to report our observations on perioperative imaging of specific findings related to the EVAS technique.…”

Section: Introductionmentioning

confidence: 99%

Observations on Surveillance Imaging After Endovascular Sealing of Abdominal Aortic Aneurysms With the Nellix System

et al. 2015

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“…Suitability for EVAS was determined by a team of clinicians using arterial phase computed tomography (CT) and confirmed at a weekly multidisciplinary team review of all prospective elective patients for AAA repair. The technique of EVAS has been described extensively within the literature [1,6,7].…”

Section: Study Design and Techniquementioning

confidence: 99%

“…The Nellix® endoprosthesis (Endologix Inc, Irvine, California, USA) has been used to treat numerous patients with abdominal aortic aneurysms (AAA) [1][2][3]. The use of a sac-anchoring endograft such as the Nellix® has brought a change in the approach to aneurysm exclusion.…”

Section: Introductionmentioning

confidence: 99%

Migration of the Nellix endoprosthesis

England

Torella

Fisher

et al. 2016

Journal of Vascular Surgery

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PURPOSE: To report the incidence and sequelae of migration of the Nellix® endoprothesis following endovascular aneurysm sealing (EVAS).METHOD: A review was performed of the follow-up imaging of all EVAS patients in a University Hospital endovascular programme who had a minimum follow-up of one year. Using the first post-operative and latest follow-up CT scans, the distances between the proximal and distal borders of the stent-grafts relative to reference vessels were measured using a previously validated technique. Device migration was based on previously established criteria and defined as any stent-graft movement of ≥ 4 mm related to a predefined reference vessel. Device movement in a caudal direction was given a positive value (+) whereas movement in a cranial direction was denoted by a negative sign (-).RESULTS: 18 patients (35 stent-grafts) were eligible for inclusion in this retrospective review.The mean (SD; range) pre-operative AAA diameter and aortic neck length were 57 (5; 50 to 67) mm and 30 (16; 6 to 62) mm, respectively. Proximal migration, according to study definitions, was identified in six stent-grafts (17%), all in a caudal direction. At one year the mean (SD; range) proximal migration distance was +6.6 (1.6; +4.7 to +9.2) mm. Migration occurred in a single stent-graft in four patients and bilaterally in one. Distally, there were no cases of migration.CONCLUSIONS: Proximal migration of the Nellix® endoprosthesis does occur and in our series was without any sequelae. Further investigations into the long-term positional stability of the Nellix® device are required together with a more thorough understanding of the aetiology and consequences of migration.

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“…The incidence and significance of EL1a following Nellix EVAS is unknown with only a handful of cases reported [3][4][5]. Proximal perigraft endoleak is not uncommon following conventional EVAR occurring in up to 10 % of cases [6], and usually mandates early secondary intervention as the blood flow outside of the endograft lumen is associated with increased sac pressurisation (endotension) and a risk of rupture [7].…”

Section: Discussionmentioning

confidence: 99%

Transcatheter Embolisation of Proximal Type 1 Endoleaks Following Endovascular Aneurysm Sealing (EVAS) Using the Nellix Device: Technique and Outcomes

Ameli-Renani

Morgan

2015

Cardiovasc Intervent Radiol

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Initial clinical experience with a sac-anchoring endoprosthesis for aortic aneurysm repair

Cited by 100 publications

References 17 publications

Observations on Surveillance Imaging After Endovascular Sealing of Abdominal Aortic Aneurysms With the Nellix System

Observations on Surveillance Imaging After Endovascular Sealing of Abdominal Aortic Aneurysms With the Nellix System

Migration of the Nellix endoprosthesis

Transcatheter Embolisation of Proximal Type 1 Endoleaks Following Endovascular Aneurysm Sealing (EVAS) Using the Nellix Device: Technique and Outcomes

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