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Flow diverter OR flow diverting OR flow diversion AND aneurysm

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https://www.readbyqxmd.com/read/28506004/relationships-between-geometrical-parameters-and-mechanical-properties-for-a-helical-braided-flow-diverter-stent
#1
Takashi Suzuki, Hiroyuki Takao, Soichiro Fujimura, Chihebeddine Dahmani, Toshihiro Ishibashi, Hiroya Mamori, Naoya Fukushima, Yuichi Murayama, Makoto Yamamoto
BACKGROUND: Although flow diversion is a promising procedure for aneurysm treatment, the safety and efficacy of this strategy have not been sufficiently characterized. Both mechanical properties and flow reduction effects are important factors in the design of an optimal stent. OBJECTIVE: We aimed to clarify the contributions of strut size and pitch to the mechanical properties (radial stiffness and longitudinal flexibility) and geometric characteristics (porosity and pore density) related to flow reduction effects...
May 1, 2017: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://www.readbyqxmd.com/read/28487360/ultrasound-for-the-evaluation-of-stenosis-after-flow-diversion
#2
Cameron M McDougall, Khurshid Khan, Maher Saqqur, Andrew Jack, Jeremy Rempel, Carol Derksen, Yin Xi, Michael Chow
BACKGROUND AND PURPOSE: Flow diversion is a relatively new strategy used to treat complex cerebral aneurysms. The optimal method for radiographic follow-up of patients treated with flow diverters has not been established. The rate and clinical implications of in-stent stenosis for these devices is unclear. We evaluate the use of transcranial Doppler ultrasound (TCD) for follow-up of in-stent stenosis. MATERIALS AND METHODS: We analyzed 28 patients treated with the Pipeline embolization device (PED) over the course of 42 months from January 2009 to June 2012...
May 9, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28475757/a-multicenter-cohort-comparison-study-of-the-safety-efficacy-and-cost-of-ticagrelor-compared-to-clopidogrel-in-aneurysm-flow-diverter-procedures
#3
Justin M Moore, Nimer Adeeb, Hussain Shallwani, Raghav Gupta, Apar S Patel, Christoph J Griessenauer, Roy Youn, Adnan Siddiqui, Christopher S Ogilvy, Ajith J Thomas
BACKGROUND: Thromboembolic and hemorrhagic complications are among the most feared adverse events in the endovascular treatment of aneurysms, and this is particularly the case for flow diverter devices. Dual antiplatelet therapy has become standard of care; however, the safety, efficacy, and cost profiles of newer antiplatelet agents are not well characterized in the neurovascular context. OBJECTIVE: To compare the safety, efficacy, and cost of one of these newer agents, ticagrelor, to the most frequently used agent, clopidogrel...
May 5, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28474993/de-novo-giant-posterior-cerebral-artery-aneurysm-developing-25-years-after-basilar-bifurcation-aneurysm-treatment-using-a-drake-tourniquet-case-report-and-implications-for-aneurysm-follow-up
#4
Rafael Martinez-Perez, David M Pelz, Stephen P Lownie
The objective of this paper was to report a rare complication of basilar artery (BA) tourniquet treatment of a giant basilar tip aneurysm, and to discuss possible causes for the formation of a de novo giant posterior cerebral artery (PCA) aneurysm. A 34-year-old woman underwent satisfactory treatment of a ruptured giant basilar bifurcation aneurysm by BA ligation (Drake tourniquet) in 1985. She presented 25 years later with a new aneurysm in the left PCA, successfully treated by coil embolization. To the authors' knowledge, this is the first case of de novo aneurysm formation on a PCA, and the first de novo aneurysm reported as a complication of BA ligation therapy by Drake tourniquet...
May 5, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28473431/first-us-experience-with-pipeline-flex-with-shield-technology-using-aspirin-as-antiplatelet-monotherapy
#5
Ricardo A Hanel, Pedro Aguilar-Salinas, Leonardo Bc Brasiliense, Eric Sauvageau
Flow diversion has revolutionised the treatment of intracranial aneurysms, and the Pipeline Embolization Device (PED) remains the only flow diverter (FD) approved in the USA. However, thromboembolic events remain an issue for FDs. Attempting to minimise these incidents, a newer PED has been developed with the use of covalent bonding of phosphorylcholine onto the Pipeline device that has been known as Shield Technology (PED Shield), which in vitro has demonstrated a significant reduction in material thrombogenicity...
May 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28452658/resolution-of-giant-basilar-artery-aneurysm-compression-and-reversal-of-sensorineural-hearing-loss-with-use-of-a-flow-diverter-case-report
#6
Laila M Mohammad, Alexander L Coon, Andrew P Carlson
The authors present an unusual case of a 15-year-old boy in whom sensorineural hearing loss and disequilibrium developed in the setting of a giant basilar artery aneurysm. This patient was treated with a flow-diverting stent and had complete resolution of his clinical symptoms including hearing loss. This case demonstrates the efficacy of flow diversion in select pediatric patients with posterior circulation aneurysms. The features that are thought to result in successful treatment are discussed.
April 28, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28452612/letter-to-the-editor-flow-diversion-in-the-treatment-of-intracranial-aneurysm-trial
#7
David F Kallmes, Waleed Brinjikji, Alejandro A Rabinstein
No abstract text is available yet for this article.
April 28, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28450438/large-basilar-apex-aneurysms-treated-with-flow-diverter-stents
#8
V Da Ros, J Caroff, A Rouchaud, C Mihalea, L Ikka, J Moret, L Spelle
BACKGROUND AND PURPOSE: The treatment of wide-neck, large basilar apex aneurysms is challenging with either an endovascular or a surgical approach. The aim of the present study was to report our experience treating basilar apex aneurysms with flow-diverter stents and to evaluate their efficacy and safety profile in this specific anatomic condition. MATERIALS AND METHODS: We retrospectively analyzed data from all consecutive patients treated with flow-diverter stents at our institution between January 2011 and January 2015...
April 27, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28439656/-management-of-paraophthalmic-aneurysms-review-of-endovascular-treatment-strategies
#9
P Bhogal, M Aguilar Pérez, G Sauder, H Bäzner, O Ganslandt, H Henkes
BACKGROUND: Aneurysms of the cerebral vessels are relatively common and aneurysms of the ophthalmic segment of the internal carotid artery (ICA) represent approximately 10% of intradural aneurysms. ANATOMICAL ASPECTS: The ophthalmic segment of the ICA extends from the origin of the ophthalmic artery to the origin of the posterior communicating artery. Aneurysms can originate from the ophthalmic artery itself or directly from the ICA at a distance from the ophthalmic artery...
April 24, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/28433850/surgical-resection-and-histopathological-analysis-of-a-thrombosed-giant-fusiform-mca-aneurysm-after-initial-treatment-with-a-flow-diversion-construct
#10
Jayson Sack, Vincent Cheung, Deirdre Amaro, Arvin R Wali, David R Santiago-Dieppa, J Scott Pannell, Alexander A Khalessi
BACKGROUND: We describe the histopathology of an un-ruptured, giant calcified left MCA fusiform aneurysm initially treated with endovascular flow diversion. The flow diversion construct underwent post-operative in-stent thrombosis, necessitating surgical resection of the aneurysm to eliminate mass effect. METHODS: A 75-year-old woman with a known left MCA aneurysm presented to the Emergency Department with moderate right hemibody weakness. Due to the clinical and radiographic progression of the aneurysm, the patient was offered treatment...
April 19, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28411263/use-of-platelet-function-testing-before-pipeline-embolization-device-placement-a-multicenter-cohort-study
#11
Nimer Adeeb, Christoph J Griessenauer, Paul M Foreman, Justin M Moore, Hussain Shallwani, Rouzbeh Motiei-Langroudi, Abdulrahman Alturki, Adnan H Siddiqui, Elad I Levy, Mark R Harrigan, Christopher S Ogilvy, Ajith J Thomas
BACKGROUND AND PURPOSE: Thromboembolic complications constitute a significant source of morbidity after neurointerventional procedures. Flow diversion using the pipeline embolization device for the treatment of intracranial aneurysms necessitates the use of dual antiplatelet therapy to reduce this risk. The use of platelet function testing before pipeline embolization device placement remains controversial. METHODS: A retrospective review of prospectively maintained databases at 3 academic institutions was performed from the years 2009 to 2016 to identify patients with intracranial aneurysms treated with pipeline embolization device placement...
April 14, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28402491/matched-comparison-of-flow-diversion-and-coiling-in-small-noncomplex-intracranial-aneurysms
#12
Nohra Chalouhi, Badih Daou, Guilherme Barros, Robert M Starke, Ameet Chitale, George Ghobrial, Richard Dalyai, David Hasan, L Fernando Gonzalez, Stavropoula Tjoumakaris, Robert H Rosenwasser, Pascal Jabbour
BACKGROUND: Flow diversion is typically reserved for large, giant, or morphologically complex aneurysms. Coiling remains a first-line treatment for small, morphologically simple aneurysms. OBJECTIVE: To compare coiling and flow diversion in small, uncomplicated intracranial aneurysms (typically amenable to coiling). METHODS: Forty patients treated with the pipeline embolization device (PED) for small (<10 mm), morphologically simple aneurysms that would have also been amenable to coiling were identified...
April 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28383672/cerebral-revascularization-for-aneurysms-in-the-flow-diverter-era
#13
David C Straus, Harley Brito da Silva, Lynn McGrath, Michael R Levitt, Louis J Kim, Basavaraj V Ghodke, Jason K Barber, Laligam N Sekhar
BACKGROUND: Cerebral bypass has been an important tool in the treatment of complex intracranial aneurysms. The recent advent of flow-diverting stents (FDS) has expanded the capacity for endovascular arterial reconstruction. OBJECTIVE: We investigated how the advent of FDS has impacted the application and outcomes of cerebral bypass in the treatment of intracranial aneurysms. METHODS: We reviewed a consecutive series of cerebral bypasses during aneurysm surgery over the course of 10 years...
April 5, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28357169/low-profile-visualized-intraluminal-support-junior-device-for-the-treatment-of-intracranial-aneurysms
#14
Mihir Gupta, Vincent J Cheung, Peter Abraham, Arvin R Wali, David R Santiago-Dieppa, Brandon C Gabel, Abdulrahman Almansouri, J Scott Pannell, Alexander A Khalessi
OBJECTIVE: Early case series suggest that the recently introduced Low-profile Visualized Intraluminal Support Junior (LVIS Jr.) device (MicroVention-Terumo, Inc., Tustin, CA) may be used to treat wide-necked aneurysms that would otherwise require treatment with intrasaccular devices or open surgery. We report our single-center experience utilizing LVIS Jr. to treat intracranial aneurysms involving 1.8-2.5 mm parent arteries. METHODS: We retrospectively reviewed records of patients treated with the LVIS Jr...
February 17, 2017: Curēus
https://www.readbyqxmd.com/read/28279774/conscious-sedation-versus-general-anesthesia-for-the-treatment-of-cerebral-aneurysms-with-flow-diversion-a-matched-cohort-study
#15
Christoph J Griessenauer, Hussain Shallwani, Nimer Adeeb, Raghav Gupta, Leonardo Rangel-Castilla, Adnan H Siddiqui, Elad I Levy, Myles D Boone, Ajith J Thomas, Christopher S Ogilvy
INTRODUCTION: Flow diversion has become a popular treatment option for a variety of cerebral aneurysms. We sought to compare conscious sedation and general anesthesia for flow diverter placement in a matched cohort study. MATERIALS AND METHODS: Patients who underwent flow diverter placement under conscious sedation were matched on the basis of age, sex, American Society of Anesthesiologists (ASA) classification, aneurysm location, and aneurysm size with patients who received general anesthesia...
March 6, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28265011/tourniquet-parent-artery-occlusion-after-flow-diversion
#16
Visish M Srinivasan, Maxim Mokin, Edward A M Duckworth, Stephen Chen, Ajit Puri, Peter Kan
BACKGROUND: The Pipeline Embolization Device (PED) is increasingly used for both on- and off-label purposes for treatment of intracranial aneurysms. The device gradually slows flow of blood into the aneurysm, but the high metal coverage of PED promotes endothelialization of the device. Occasionally, this leads to in-stent stenosis that is clinically well tolerated. We present a multi-institutional Pipeline series that includes three cases of gradual asymptomatic occlusion within the PED and parent vessel...
March 6, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28246277/ischemic-stroke-after-treatment-of-intraprocedural-thrombosis-during-stent-assisted-coiling-and-flow-diversion
#17
Nimer Adeeb, Christoph J Griessenauer, Justin M Moore, Paul M Foreman, Hussain Shallwani, Rouzbeh Motiei-Langroudi, Raghav Gupta, Carlos E Baccin, Abdulrahman Alturki, Mark R Harrigan, Adnan H Siddiqui, Elad I Levy, Christopher S Ogilvy, Ajith J Thomas
BACKGROUND AND PURPOSE: Intraprocedural thrombosis poses a formidable challenge during neuroendovascular procedures because the risks of aggressive thromboembolic treatment must be balanced against the risk of postprocedural hemorrhage. The aim of this study was to identify predictors of ischemic stroke after intraprocedural thrombosis after stent-assisted coiling and pipeline embolization device placement. METHODS: A retrospective analysis of intracranial aneurysms treated with stent-assisted coiling or pipeline embolization device placement between 2007 and 2016 at 4 major academic institutions was performed to identify procedures that were complicated by intraprocedural thrombosis...
April 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28243686/flow-diversion-what-can-clinicians-learn-from-animal-models
#18
Robert Fahed, Tim E Darsaut, Jean-Christophe Gentric, Behzad Farzin, Igor Salazkin, Guylaine Gevry, Jean Raymond
INTRODUCTION: Flow diversion is increasingly used for treating intracranial aneurysms. This article aims to review the evidence obtained from animal models and summarizes the findings that might be of clinical interest. METHODS: From a systematic review of studies published between 2000 and 2016, we extracted the data on the following questions: What roles do aneurysm dimension, morphology, and vascular geometry have on success of flow diversion? What characteristics of a flow diverter can influence aneurysm occlusion? What are the risk factors for jailed branch occlusion? RESULTS: Flow diversion has been shown to be less effective in occluding large aneurysms with wide or undefined necks, as compared to smaller aneurysms with narrower necks...
February 27, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28210239/flow-diversion-for-the-treatment-of-mca-bifurcation-aneurysms-a-single-centre-experience
#19
Pervinder Bhogal, Muhammad AlMatter, Hansjörg Bäzner, Oliver Ganslandt, Hans Henkes, Marta Aguilar Pérez
BACKGROUND: Intracranial aneurysms located at the bifurcation of the middle cerebral artery (MCA) can often be challenging for the neurointerventionalist. We aimed to evaluate the efficacy and safety of flow diverting stents (FDS) in the treatment of these aneurysms. MATERIALS AND METHODS: We retrospectively reviewed our prospectively maintained database to collect information for all patients with unruptured saccular bifurcation MCA aneurysms treated with FDS between January 2010 and January 2016...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28184003/a-survey-of-intracranial-aneurysm-treatment-practices-among-united-states-physicians
#20
Kyle M Fargen, Hector E Soriano-Baron, Julia T Rushing, William Mack, J Mocco, Felipe Albuquerque, Andrew F Ducruet, Maxim Mokin, Italo Linfante, Stacey Q Wolfe, John A Wilson, Joshua A Hirsch
BACKGROUND: Recent surveys have failed to examine cerebrovascular aneurysm treatment practices among US physicians. OBJECTIVE: To survey physicians who are actively involved in the care of patients with cerebrovascular aneurysms to determine current aneurysm treatment preferences. METHODS: A 25-question SurveyMonkey online survey was designed and distributed electronically to members of the Society of NeuroInterventional Surgery, Society of Vascular and Interventional Neurology, and the American Association of Neurological Surgeons/Congress of Neurological Surgeons Combined Cerebrovascular Section...
February 9, 2017: Journal of Neurointerventional Surgery
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