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https://www.readbyqxmd.com/read/28911963/evolution-of-computed-tomography-imaging-the-first-year-after-endovascular-sealing-of-infrarenal-aortic-aneurysms-using-the-nellix-device
#1
Leo H van den Ham, Thijs G Ter Mors, Johannes T Boersen, Jean Paul P M de Vries, Patrick W Vriens, Jan M Heyligers, Michel M P J Reijnen
INTRODUCTION: The Nellix Endovascular Aneurysm Sealing (EVAS) System is an alternative endovascular treatment option for infrarenal aortic aneurysms (AAA) with a unique appearance on Computed Tomography Angiography (CTA). Normal evolution of post-EVAS CTA appearance follow-up is still largely unknown and important in order to timely detect eventual complications. OBJECTIVE: To assess the normal appearance of CTA images 30 days and 1 year after EVAS in 50 consecutive patients...
September 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28887237/successful-use-of-nellix-and-endovascular-aortic-sealing-evas-technology-for-treatment-of-aortic-rupture-in-a-porcine-model
#2
Brandon W Propper, Shaun Gifford, Sean Hislop, Michael Clemens, Zachary M Arthurs
BACKGROUND: Endovascular Aortic Sealing (EVAS) represents a recent transformation in approach for treatment of aortic aneurysms. Initial reporting has shown that EVAS using the Nellix device is safe with similar complication rates to standard endovascular aortic repair (EVAR). What remains unknown is how EVAS technology will behave in the ruptured setting. The purpose of this report is to discuss how EVAS system and endobag technology behave when deployed in a porcine model of aortic rupture...
September 5, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28882080/use-of-the-nellix-endovascular-aneurysm-sealing-system-in-combination-with-parallel-grafts-for-the-treatment-of-a-symptomatic-type-v-thoracoabdominal-aortic-aneurysm
#3
Chris Klonaris, Athanasios Katsargyris, Dimitris Athanasiadis, Theodor Liakakos
PURPOSE: To report endovascular treatment of a symptomatic type V thoracoabdominal aortic aneurysm (TAAA) using the combined techniques of endovascular aneurysm sealing and parallel stent-grafts. CASE REPORT: A 70-year-old man was referred with a symptomatic type V TAAA. The Nellix EndoVascular Aneurysm Sealing (EVAS) System was used in combination with 2 chimney grafts for the celiac artery (CA) and the superior mesenteric artery (SMA); one periscope graft perfused the right renal artery...
September 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28689483/the-influence-of-positioning-of-the-nellix-endovascular-aneurysm-sealing-system-on-suprarenal-and-renal-flow-an-in-vitro-study
#4
Johannes T Boersen, Erik Groot Jebbink, Lennart Van de Velde, Michel Versluis, Guillaume Lajoinie, Cornelius H Slump, Jean-Paul P M de Vries, Michel M P J Reijnen
PURPOSE: To examine the influence of device positioning and infrarenal neck diameter on flow patterns in the Nellix endovascular aneurysm sealing (EVAS) system. METHODS: The transition of the aortic flow lumen into two 10-mm-diameter stents after EVAS creates a mismatched area. Flow recirculation may affect local wall shear stress (WSS) profiles and residence time associated with atherosclerosis and thrombosis. To examine these issues, 7 abdominal aortic aneurysm flow phantoms were created, including 3 unstented controls and 3 stented models with infrarenal neck diameters of 24, 28, and 32 mm...
July 1, 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28678569/the-nellix-device-review-of-indications-and-outcome
#5
Ç Ünlü, R C L Schuurmann, J P P M de Vries
Despite improvements in endograft design, operator skills, and patient selection, late endovascular abdominal aortic aneurysm repair (EVAR) associated complications and need for reinterventions remains the Achilles heel. These complications erode the early benefit over open aneurysm repair during long-term follow-up. The recently introduced endovascular aneurysm sealing (EVAS) is an innovative technology with the intention to lower these EVAR related complications. Areas covered: In this review the EVAS technique, indications, and possible applications, will be discussed, as well as a critical appraisal of clinical outcomes...
July 11, 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28602623/comparison-of-outcomes-for-short-neck-and-juxtarenal-aortic-aneurysms-treated-with-the-nellix-endograft-versus-conventional-endovascular-aneurysm-sealing
#6
Daniele Psacharopulo, Michelangelo Ferri, Emanuele Ferrero, Sandeep S Bahia, Andrea Viazzo, Alberto Pecchio, Fulvio Ricceri, Franco Nessi
OBJECTIVE: The objective of this study was to evaluate the results of the off-label use of the Nellix endograft (Endologix, Irvine, Calif) for the treatment of short-neck aneurysms and juxtarenal aortic aneurysms (JAAs) compared with the outcomes of patients with infrarenal abdominal aortic aneurysms treated in accordance with the manufacturer's instructions for use. METHODS: Data available from patients treated with the Nellix endograft from September 2013 to January 2016 were reviewed to create a case-control analysis (1:2)...
June 8, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28549955/a-peculiar-case-of-type-1-endoleak-after-nellix-endovascular-aneurysm-sac-sealing-clinical-presentation-and-management
#7
Ombretta Martinelli, Luigi Irace, Roberto Gattuso, Cristina Belli, Mauro Fresilli, Bruno Gossetti
We report a case of type 1 endoleak with an outflow via a lumbar artery (LA) following Nellix endovascular aneurysm sealing (EVAS) to discuss the specific peculiarities and management of this complication. A 64-year-old man (acetylsalicylic acid 3) underwent Nellix EVAS for an asymptomatic infrarenal aortic aneurysm. The 6-month duplex scanning ultrasound and magnetic resonance imaging showed a type IA endoleak with an outflow via an LA combined with a stable aneurysmal sac size. The subsequent 9-month imaging controls showed no changes of the endoleak cavity, but there was a slight enlargement in proximal neck size associated with the distal migration of both Nellix grafts...
May 24, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28479428/aortic-foreign-body-caused-by-rupture-of-endobag-after-evas-using-the-nellix-aneurysm-sealing-system-a-case-report
#8
Jan P Frese, Ioannis T Passaloglou, Anita Micheel, Alexandra Gratl, Erik L Franzen, Safwan Omran, Andreas Greiner
The Nellix aneurysm sealing system aims at sealing the cavity of the sac of the aneurysm, to reduce typical complications such as migration or endoleak. We report on a case of a unique device-associated complication: rupture and displacement of the filling material into the aortic lumen, causing peripheral ischemia and imminent renal and visceral occlusion, in a patient with anastomotic ulcer after an open aortobiiliac bypass and calcified and tortuous iliac arteries. The material was removed by open surgery...
August 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28392056/open-conversion-after-endovascular-abdominal-aneurysm-repair-an-8-year-single-centre-experience
#9
I Ben Abdallah, S El Batti, M Abou-Rjeili, J-N Fabiani, P Julia, J-M Alsac
OBJECTIVE: To report experience with open conversion (OC) after previous failed EVAR and to compare outcomes of patients undergoing elective OC with those operated on in an urgent setting. METHODS: Patients undergoing OC after EVAR between August 2008 and September 2016 were included in this retrospective and observational single institution study. Indications, demographic, anatomical, intra-operative and post-operative data were collected prospectively. Primary endpoints were 30 day and in hospital mortality...
April 5, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28376705/a-double-nellix-and-chimney-covered-stents-challenging-treatment-of-pararenal-aortic-aneurysm
#10
Nazzareno Stella, Roberta Ficarelli, Raffaele Dito, Domitilla Brancadoro, Michele Rossi, Maurizio Taurino
A 77-year-old male patient presented with a symptomatic, 66-mm pararenal aortic aneurysm. The patient was classified as unsuitable for open surgery due to significant comorbidities. Fenestrated or branched endografts were contraindicated due to the poor iliac access (6 mm diameter). A double Nellix with chimney endovascular aneurysm sealing (ChEVAS) technique was selected to exclude the pararenal aortic aneurysm and to preserve renal arteries and the superior mesenteric artery. Technical preplanning considered the ideal proximal landing zone to be close to the origin of the almost occluded celiac trunk and the distal common iliac arteries as the ideal distal landing zone...
May 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28335702/a-benign-but-unusual-radiological-sign-during-evas-follow-up
#11
Stefano Bonardelli, Marco Ravanelli, Barbara Paro, Giuseppe Battaglia
PURPOSE: To report a heretofore undescribed complication seen on imaging after endovascular aortic sealing (EVAS). CASE REPORT: A 77-year-old woman was treated with the Nellix EVAS device for an infrarenal aortic aneurysm. After a normal computed tomography (CT) scan at 15 days, the 6-month CT showed the onset of perianeurysmal inflammatory tissue. The patient was asymptomatic, and blood tests were normal. Imaging suggested a nonaggressive inflammatory process, so a conservative approach was adopted with close follow-up...
April 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/28335160/short-and-mid-term-evaluation-of-the-risk-of-persistent-type-ii-endoleak-after-endovascular-treatment-of-an-uncomplicated-aneurysm-of-the-abdominal-aorta-with-the-nellix-%C3%A2-stentgraft-a-french-multicentric-study
#12
Heloise Samba, Alsac Jean-Marc, Robert Martinez, Adrien Kaladji, Pierre Julia, Alain Cardon, Patrick Feugier
No abstract text is available yet for this article.
January 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28294661/-nellix-new-possibilities-in-the-treatment-of-the-aorto-iliac-aneurysm-our-initial-experiences
#13
László Hidi, Csaba Csobay-Novák, Attila Nemes, Balázs Nemes, Zoltán Oláh, Dániel Pál, Péter Sótonyi
INTRODUCTION: The Endologix developed an aortoiliac stent graft system that is different than the conventional implantation technique (Nellix, EVAS-endovascular aneurysm sealing system). The first implantation in Hungary has been performed in the beginning of 2016 at Heart and Vascular Center. METHODS: Nellix: two endobags surrounding ballon-expandable covered stent (10 mm) with optional length, biocompatible polymer which is able to be injected into the endobags and a procedure-coordinating console...
March 2017: Magyar Sebészet
https://www.readbyqxmd.com/read/28285931/flow-and-wall-shear-stress-characterization-after-endovascular-aneurysm-repair-and-endovascular-aneurysm-sealing-in-an-infrarenal-aneurysm-model
#14
Johannes T Boersen, Erik Groot Jebbink, Michel Versluis, Cornelis H Slump, David N Ku, Jean-Paul P M de Vries, Michel M P J Reijnen
BACKGROUND: Endovascular aneurysm repair (EVAR) with a modular endograft has become the preferred treatment for abdominal aortic aneurysms. A novel concept is endovascular aneurysm sealing (EVAS), consisting of dual endoframes surrounded by polymer-filled endobags. This dual-lumen configuration is different from a bifurcation with a tapered trajectory of the flow lumen into the two limbs and may induce unfavorable flow conditions. These include low and oscillatory wall shear stress (WSS), linked to atherosclerosis, and high shear rates that may result in thrombosis...
March 9, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28097196/chimney-technique-with-nellix-endovascular-aneurysm-sealing-system-in-a-patient-with-single-kidney-and-juxtarenal-abdominal-aortic-aneurysm
#15
Kaspars Kisis, Janis Savlovskis, Marcis Gedins, Natalija Ezite, Edgars Zellans, Dainis Krievins
We present a saccular asymptomatic juxtarenal abdominal aortic aneurysm in a 70-year-old male with a very short left renal artery supplying the only kidney. The case was successfully treated with the Nellix EndoVascular Aneurysm Sealing system combined with a chimney technique.
August 2016: Aorta (Stamford, Conn.)
https://www.readbyqxmd.com/read/28076989/improvement-of-patient-eligibility-with-the-use-of-new-generation-endografts-for-the-treatment-of-abdominal-aortic-aneurysms-a-comparison-study-among-currently-used-endografts-and-literature-review
#16
REVIEW
Nikolaos Kontopodis, George Papadopoulos, Nikolaos Galanakis, Dimitrios Tsetis, Christos V Ioannou
BACKGROUND: Newer generation devices have attempted to accommodate a wider range of aortoiliac anatomies offering endovascular aneurysm repair (EVAR) to more patients with abdominal aortic aneurysms (AAAs). We aim to examine the anatomic suitability for the ultra-low profile Ovation endograft in our AAA patients and to compare them with other contemporary devices. METHODS: 158 consecutive AAA patients treated with EVAR or open surgical repair (OSR) were tested for EVAR eligibility according to the most commonly used endografts' instructions for use...
March 2017: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/28027891/ruptured-abdominal-aortic-aneurysm-post-evas-nellix-explantation
#17
M Cherchi, S Camparini
No abstract text is available yet for this article.
December 24, 2016: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/27989321/patient-selection-for-endovascular-sac-sealing-of-abdominal-aortic-aneurysm
#18
REVIEW
Robert K Fisher, Francesco Torella, Andrew England, Richard G McWilliams
Endovascular sealing is a developing technique for treatment of abdominal aortic aneurysm that draws on novel concepts utilizing polymer filling of endobags within the aorto-iliac lumen. The morphologic indications and patient selection, while similar to those of endovascular aneurysm repair, differ in some regards. The Instructions for Use for the Nellix sealing device may expand the indications for aneurysm treatment and are closely scrutinized in this article. The authors draw on current evidence and their own experience and opinion in the discussion around appropriate patient selection and its influence on outcomes after endovascular aneurysm sealing...
September 2016: Seminars in Vascular Surgery
https://www.readbyqxmd.com/read/27989319/percutaneous-interventions-following-endovascular-aneurysm-sac-sealing-endoleak-embolization-and-limb-related-adverse-events
#19
REVIEW
S Ameli-Renani, R A Morgan
The Nellix endovascular aneurysm sealing system is a novel alternative to conventional endovascular aneurysm repair for aortic aneurysm management using paired balloon-expandable endografts supported by polymer-filled endobags to achieve sealing and anatomic fixation. Part of the promise of endovascular aneurysm sealing is increased resistance to lateral and longitudinal forces and a potential for reduced rates of device-related failures, particularly endoleaks. Initial efficacy data on this device are encouraging, but our knowledge of its associated complications and their management is limited...
September 2016: Seminars in Vascular Surgery
https://www.readbyqxmd.com/read/27989318/appearance-of-the-nellix-endoprosthesis-on-postoperative-imaging-implications-for-patient-and-device-surveillance
#20
REVIEW
N J Hilliard, P Hayes, A P Winterbottom
The Nellix stent graft has novel features that influence interpretation of imaging follow-up, in particular, the use of endobags that seal the aneurysm sac. The polymer within the endobags contains a small amount of contrast medium, which causes a predictable temporal change in appearances. Understanding of these features allows correct image evaluation. In this article, we review the appearance of Nellix on computed tomography, ultrasound, magnetic resonance imaging, and plain radiography. We describe the special considerations that are important to consider when reviewing imaging, including endobag position and seal, endobag configuration, endobag and polymer maturation, and endobag gas...
September 2016: Seminars in Vascular Surgery
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