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https://www.readbyqxmd.com/read/29871991/stent-assisted-coil-embolization-of-anterior-communicating-artery-aneurysms-safety-effectiveness-and-risk-factors-for-procedural-complications-or-recanalization
#1
Hyun Ho Choi, Young Dae Cho, Dong Hyun Yoo, Sang Jun Ahn, Won-Sang Cho, Hyun-Seung Kang, Jeong Eun Kim, Jeong Jun Lee, Jong Hyun Moon, Moon Hee Han
INTRODUCTION: Stent-assisted coil (SAC) embolization is an alternative treatment option for anterior communicating artery (AcoA) aneurysms. This study was undertaken to assess the safety and effectiveness of SAC embolization in treating AcoA aneurysms and to determine risk factors for related procedural complications or recanalization. METHODS: Between August 2008 and December 2016, 184 patients with AcoA aneurysms were treated with SAC embolization. Cumulative medical record and radiologic data were analyzed using binary logistic regression to identify factors predisposing to procedural complications or recanalization...
June 5, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29736426/stent-assisted-treatment-of-ruptured-intracranial-aneurysms-in-the-acute-phase-a-single-center-experience
#2
Michael J Ho, Sophia L Göricke, Petra Mummel, Christoph Mönninghoff, Karsten Wrede, Isabel Wanke
Introduction: The purpose of this study was to analyze the results of patients with ruptured aneurysms who were treated with a specific microstent in the acute phase of subarachnoid hemorrhage. Methods: Data from patients with acutely-ruptured intracranial aneurysm treated with the Neuroform stent in the period between 2003 and 2016 were retrospectively assessed, addressing aneurysm occlusion and clinical outcome with a focus on periprocedural complications. Results: Twenty-nine consecutive patients with ruptured intracranial aneurysms were included in the analysis...
March 2018: ENeurologicalSci
https://www.readbyqxmd.com/read/29678886/the-neuroform-atlas-stent-to-assist-coil-embolization-of-intracranial-aneurysms-a-multicentre-experience
#3
Christian Ulfert, Mirko Pham, Michael Sonnberger, Franco Amaya, Johannes Trenkler, Martin Bendszus, Markus A Möhlenbruch
OBJECTIVE: To assess the clinical safety and efficacy of the Atlas microstent in stent-assisted coil embolization of wide-necked intracranial aneurysms. METHODS: Single-center observational study in 36 patients (24 female, 12 male, mean age 56 years) with 37 aneurysms for the endovascular treatment of wide-necked aneurysms. After giving informed consent, patients were included according to the following criteria: aneurysm dome-to-neck ratio <2 or neck diameter >4 mm, and a parent vessel diameter of ≤4...
April 20, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29675589/does-stent-type-impact-coil-embolization-outcomes-in-extended-follow-up-of-small-sized-aneurysms-10-mm
#4
Jeongjun Lee, Young Dae Cho, Dong Hyun Yoo, Hyun-Seung Kang, Won-Sang Cho, Jeong Eun Kim, Jusun Moon, Moon Hee Han
PURPOSE: Self-expandable stents have enabled endovascular treatment of wide-necked aneurysms (ordinarily viewed as technically prohibitive), with favorable outcomes. However, the impact of stent type on occlusive stability has not been adequately investigated. In small-sized unruptured saccular aneurysms, we generated estimates of stent-assisted coil embolization outcomes during follow-up monitoring. Stent type and other risk factors linked to recanalization were analyzed. METHODS: A cohort of 286 patients harboring 312 small-sized unruptured aneurysms (< 10 mm) was subjected to mid-term and extended follow-up monitoring after stent-assisted coiling...
July 2018: Neuroradiology
https://www.readbyqxmd.com/read/29579261/neuroform-atlas-stent-assisted-coiling-preliminary-results
#5
Michelle F M Ten Brinck, Joost de Vries, Ronald H M A Bartels, J André Grotenhuis, Hieronymus D Boogaarts
BACKGROUND: Stent-assisted coiling (SAC) is increasingly being performed as intervention for wide-neck intracranial aneurysms. The NeuroForm Atlas Stent (CE-marked; Stryker, Kalamazoo, Michigan) is relatively new. OBJECTIVE: To evaluate the effectiveness and safety of NeuroForm Atlas SAC for intracranial aneurysms in the first such study. METHODS:  We retrospectively analyzed data from all patients treated with the NeuroForm Atlas SAC of an intracranial aneurysm, both ruptured and unruptured, between June 2015 and December 2016...
March 21, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29555729/catheter-exchange-technique-for-the-wingspan-stent-technical-note
#6
W S Lesley, R Rangaswamy
BACKGROUND AND PURPOSE: The only Food and Drug Administration-approved implant for managing intracranial stenosis is the Wingspan stent. Modification of the standard Wingspan stent delivery procedure has not been previously reported. MATERIAL AND METHODS: Retrospective, single-patient, technical report. RESULTS: Following uneventful balloon angioplasty, a symptomatic intracranial vertebral artery stenosis was inaccessible to Wingspan stent delivery using standard procedural protocol because of poor proximal guide catheter purchase...
April 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29384186/intentional-herniation-technique-with-the-neuroform-ez-stent-system-for-preservation-of-aneurysmal-neck-branch-a-case-report
#7
Yoji Kuramoto, Kazuyuki Mikami, Toshiaki Bando, Yasushi Ueno
PURPOSE: Endovascular treatment of bifurcation aneurysms is difficult and complicated because arterial branches may arise from the aneurysmal neck. We treat these cases with complex techniques such as Y or T stenting. In this report, we deployed one Neuroform EZ stent using the intentional herniation technique for the preservation of arterial branches. CASE PRESENTATION: A 78-year-old female presented with two unruptured aneurysms. One was an 8 mm aneurysm located at the bifurcation of the internal carotid artery and the posterior communicating artery (PcomA)...
December 6, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/29350091/stent-assisted-coiling-of-cerebral-aneurysms-with-the-neuroform-atlas-stent
#8
Ferdi Cay, Ahmet Peker, Anıl Arat
Objectives The Neuroform Atlas stent (AS) is the smallest intracranial stent with an open-cell design. This study reports the first clinical experience with AS. Methods All intracranial aneurysms treated by stent-assisted coiling using a single AS in a single institution were retrospectively evaluated. Patient demographics, aneurysm characteristics, angles between the parent artery and stented branch, technical success, and clinical and angiographic follow-up were analyzed. Results Fifty-five consecutive aneurysms treated with AS-assisted coiling were included...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29239685/in-vitro-angiographic-comparison-of-the-flow-diversion-performance-of-five-neurovascular-stents
#9
Ronak J Dholakia, Ari D Kappel, Andrew Pagano, Henry H Woo, Baruch B Lieber, David J Fiorella, Chander Sadasivan
Background and purpose Data differentiating flow diversion properties of commercially available low- and high-porosity stents are limited. This in vitro study applies angiographic analysis of intra-aneurysmal flow to compare the flow-diversion performance of five neurovascular devices in idealized sidewall and bifurcation aneurysm models. Methods Five commercial devices (Enterprise, Neuroform, LVIS, FRED, and Pipeline) were implanted in silicone sidewall and bifurcation aneurysm models under physiological average flow of blood analog fluid...
April 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29146831/stent-assisted-coiling-of-cerebral-aneurysms-a-single-center-clinical-and-angiographic-analysis
#10
Jun Wang, Jan Vargas, Alejandro Spiotta, Imran Chaudry, Raymond D Turner, Jonathan Lena, Aquilla Turk
OBJECTIVE: This study retrospectively compared the clinical and angiographic outcomes of treating cerebral aneurysms with Neuroform (NEU), Enterprise (EP), and Low-profile Visualized Intraluminal Support (LVIS/LVIS Jr) stents. MATERIALS AND METHODS: We conducted a retrospective analysis of a procedural database. All aneurysm procedures using any of the three types of self-expanding nitinol stents (NEU, EP and LVIS/LVIS Jr) were included. Intra-procedure complications, post-procedure complications, and angiographic results (Raymond-Roy grade scale, RRGS) were analyzed retrospectively...
November 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29081013/emerging-technologies-in-flow-diverters-and-stents-for-cerebrovascular-diseases
#11
REVIEW
Michael Karsy, Jian Guan, Andrea A Brock, Anubhav Amin, Min S Park
PURPOSE OF REVIEW: Stents and flow diverters have revolutionized the treatment of cerebrovascular disease. Guglielmi coils, flexible microcatheters, and first-generation intracranial stents, such as Neuroform (Stryker Neurovascular) and Enterprise stents (Codman/DePuy-Synthes), have paved the way for the development of the Pipeline Embolization Device (PED) (ev3/Covidien/Medtronic) and other endovascular approaches. RECENT FINDINGS: This review discusses the historical development of flow diverter technologies from the PED to similar devices, such as the Surpass stent (Stryker Neurovascular), the Flow-Redirection Endoluminal Device (FRED; MicroVention, Inc...
October 28, 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28791434/progressive-occlusion-of-small-saccular-aneurysms-incompletely-occluded-after-stent-assisted-coil-embolization-analysis-of-related-factors-and-long-term-outcomes
#12
Jeong Wook Lim, Jeongjun Lee, Young Dae Cho
PURPOSE: Incompletely occluded aneurysms after coil embolization are subject to recanalization but occasionally progress to a totally occluded state. Deployed stents may actually promote thrombosis of coiled aneurysms. We evaluated outcomes of small aneurysms (<10 mm) wherein saccular filling with contrast medium was evident after stent-assisted coiling, assessing factors implicated in subsequent progressive occlusion. METHODS: Between September 2012 and June 2016, a total of 463 intracranial aneurysms were treated by stent-assisted coil embolization...
August 8, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28587530/endovascular-treatment-of-wide-neck-intracranial-bifurcation-aneurysms-with-y-configuration-double-neuroform%C3%A2-stents-assisted-coiling-technique-experience-in-a-single-center
#13
C Castaño, M Terceño, S Remollo, M R García-Sort, C Domínguez
Background Intracranial wide-neck aneurysms at the arterial bifurcations, especially in the aneurysms where the bifurcating branches emanate directly from the base of the aneurysm, have been particularly difficult on which to perform endovascular treatment. The 'Y'-configuration, double stent-assisted coil embolization is an option for the treatment of these difficult aneurysms, allowing the closure of the aneurysm, preserving the parent arteries. Material and methods In a nine-year period, 546 intracranial aneurysms in 493 patients were treated at our center by endovascular approach...
August 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28488070/cerebral-aneurysm-neck-diameter-is-an-independent-predictor-of-progressive-occlusion-after-stent-assisted-coiling
#14
Masahito Nakazaki, Tadashi Nonaka, Tatsufumi Nomura, Toshiyuki Onda, Yasuyuki Yonemasu, Akira Takahashi, Yuji Hashimoto, Osamu Honda, Shinichi Oka, Masanori Sasaki, Masahiko Daibo, Osamu Honmou
BACKGROUND: Some intracranial aneurysms treated by stent-assisted coiling (SAC) with incomplete occlusion undergo progressive occlusion (PO) during follow-up period. We analyzed the predictors for the occurrence of PO. METHODS: Among 74 cerebral aneurysms treated by SAC using the Enterprise or Neuroform stents from 2010 to 2015, we included 43 aneurysms with occlusion grade of neck remnant (NR, n = 36) or residual aneurysm (RA, n = 7) at the post-procedure. We defined PO as improvement in occlusion grade from RA to NR, or from NR or RA to complete occlusion on angiographic follow-up imaging at 6 months after the procedure...
July 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28316867/bench-top-comparison-of-physical-properties-of-4-commercially-available-self-expanding-intracranial-stents
#15
Su-Hee Cho, Won-Il Jo, Ye-Eun Jo, Ku Hyun Yang, Jung Cheol Park, Deok Hee Lee
PURPOSE: To better understand the performance of four commercially available neurovascular stents in intracranial aneurysm embolization, the stents were compared in terms of their basic morphological and mechanical properties. MATERIALS AND METHODS: Four different types of stents that are currently being used for cerebral aneurysm embolization were prepared (two stents per type). Two were laser-cut stents (Neuroform and Enterprise) and two were braided from a single nitinol wire (LEO and LVIS stents)...
March 2017: Neurointervention
https://www.readbyqxmd.com/read/28184346/the-interference-phenomenon-of-microcatheters-in-the-jailing-treatment-for-internal-carotid-artery-side-wall-aneurysms-with-an-open-cell-stent-system
#16
Minwook Yoo, Sung-Chul Jin, Seung-Hwan Kim, Byeong-Sam Choi, Hae Yu Kim, SungJun Lee, Sung Tae Kim, Hae Woong Jeong
OBJECTIVE: Excelsior XT-27 (Stryker Neurovascular, Fremont, CA, USA) or Rebar 27 (eV3 Covidien, Irvine, CA, USA) microcatheters have recently been used to overcome the limitations of the Renegade Hi-Flo microcatheter such as interference between two microcatheters (one for stent delivery and the other for cerebral aneurysm coiling) during the jailing technique. We evaluated differences and influential factors related to the interference phenomenon according to these two microcatheters group...
December 2016: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/28163518/double-barrel-y-configuration-stenting-for-flow-diversion-of-a-giant-recurrent-basilar-apex-aneurysm-with-the-pipeline-flex-embolization-device
#17
Dale Ding, Robert M Starke, Ben McGuinness, Stefan Brew
Giant basilar apex aneurysms are extremely challenging to successfully manage. The Pipeline Flex embolization device (PFED) is a new generation flow-diverting stent with a modified delivery system which allows resheathing of the stent after partial deployment. We describe a case of double-barrel Y-configuration stenting of a giant, recurrent basilar apex aneurysm using the PFED. A 73-year-old male was previously treated for an unruptured 11-mm basilar apex aneurysm with stent-assisted coiling using a Neuroform stent...
December 2016: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/27956518/use-of-self-expanding-stents-for-better-intracranial-flow-diverter-wall-apposition
#18
Anna Luisa Kühn, Ajay K Wakhloo, Matthew J Gounis, Peter Kan, Katyucia de Macedo Rodrigues, J Diego Lozano, Miklos G Marosfoi, Mary Perras, Christopher Brooks, Mary C Howk, David E Rex, Francesco Massari, Ajit S Puri
Background Flow diverter (FD) malapposition is associated with stroke-related complications. We document the use of self-expanding nitinol stents to remove/reduce the ledge of a FD deployed for aneurysm treatment. Methods We identified five patients who were treated with the Pipeline embolization device (PED) in conjunction with a Neuroform EZ stent for inadequate wall apposition of the ends of the FD at our institution between May 2014 and July 2015. Among other parameters, angiographic results, cone-beam computed tomography assessment of wall apposition and patient clinical outcome were evaluated...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27727400/hemodynamics-of-flow-diverters
#19
COMPARATIVE STUDY
Ronak Dholakia, Chander Sadasivan, David J Fiorella, Henry H Woo, Baruch B Lieber
Cerebral aneurysms are pathological focal evaginations of the arterial wall at and around the junctions of the circle of Willis. Their tenuous walls predispose aneurysms to leak or rupture leading to hemorrhagic strokes with high morbidity and mortality rates. The endovascular treatment of cerebral aneurysms currently includes the implantation of fine-mesh stents, called flow diverters, within the parent artery bearing the aneurysm. By mitigating flow velocities within the aneurysmal sac, the devices preferentially induce thrombus formation in the aneurysm within hours to days...
February 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27698229/stent-assisted-coiling-of-cerebrovascular-aneurysms-experience-at-a-large-tertiary-care-center-with-a-focus-on-predictors-of-recurrence
#20
Joseph R Linzey, Julius Griauzde, Zhe Guan, Nicole Bentley, Joseph J Gemmete, Neeraj Chaudhary, B Gregory Thompson, Aditya S Pandey
BACKGROUND: Stent-assisted coiling is commonly used to treat wide-necked and fusiform cerebral aneurysms. We evaluated our institutional experience with stent-assisted coiling of cerebral aneurysms to elucidate potential risk factors for recurrence. METHODS: A retrospective analysis of patients undergoing stent-assisted coiling of cerebral aneurysms from 2005 to 2012 resulted in 122 patients with 122 aneurysms. Demographic, peri-procedural, medical comorbidity, and follow-up data were collected...
November 2017: Journal of Neurointerventional Surgery
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