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Neuroendovascular

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https://www.readbyqxmd.com/read/28867523/drip-and-ship-thrombolytic-therapy-for-acute-ischemic-stroke
#1
Ichiro Deguchi, Satoko Mizuno, Shinya Kohyama, Norio Tanahashi, Masaki Takao
BACKGROUND: Neuroendovascular therapy is a common treatment for patients with acute ischemic stroke of the anterior circulation who fail to respond to recombinant tissue plasminogen activator. However, although most hospitals can provide recombinant tissue plasminogen activator therapy, many cannot perform neuroendovascular therapy. Thus, use of a drip-and-ship treatment-liaison system allowing recombinant tissue plasminogen activator-treated patients to be transferred to facilities offering neuroendovascular therapy is important...
August 31, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28862546/angioarchitecture-of-arteriovenous-fistulas-at-the-craniocervical-junction-a-multicenter-cohort-study-of-54-patients
#2
Masafumi Hiramatsu, Kenji Sugiu, Tomoya Ishiguro, Hiro Kiyosue, Kenichi Sato, Keisuke Takai, Yasunari Niimi, Yuji Matsumaru
OBJECTIVE The aim of this retrospective multicenter cohort study was to assess the details of the angioarchitecture of arteriovenous fistulas (AVFs) at the craniocervical junction (CCJ) and to determine the associations between the angiographic characteristics and the clinical presentations and outcomes. METHODS The authors analyzed angiographic and clinical data for patients with CCJ AVFs from 20 participating centers that are members of the Japanese Society for Neuroendovascular Therapy (JSNET). Angiographic findings (feeding artery, location of AV shunt, draining vein) and patient data (age, sex, presentation, treatment modality, outcome) were tabulated and stratified based on the angiographic types of the lesions, as diagnosed by a member of the CCJ AVF study group, which consisted of a panel of 6 neurointerventionalists and 1 spine neurosurgeon...
September 1, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28831587/usefulness-of-an-access-site-hemostasis-device-in-neuroendovascular-treatment
#3
Masayuki Sato, Yuji Matsumaru, Nobuyuki Sakai, Hirotoshi Imamura, Masaru Hirohata, Yasuharu Takeuchi, Yasushi Matsumato, Ichirou Suzuki
BACKGROUND: We examined the safety and efficacy of the access-site hemostasis device Angio-Seal™ STS Plus (AS; St. Jude Medical,St. Paul, MN, USA) compared with the method of hemostasis by manual compression (MC) in neuroendovascular therapy. METHOD: We conducted a prospective multicenter registration study enrolling 229 patients who were scheduled to undergo endovascular treatment. RESULTS: Of the 119 and 110 cases assigned to the AS and MC groups, 118 (99...
August 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28808603/aneurysm-treatment-practice-patterns-for-newly-appointed-dual-trained-cerebrovascular-endovascular-neurosurgeons-comparison-of-open-surgical-to-neuroendovascular-procedures-in-the-first-2-years-of-academic-practice
#4
Bowen Jiang, Matthew T Bender, Bima Hasjim, Frank P K Hsu, Rafael J Tamargo, Judy Huang, Geoffrey P Colby, Alexander L Coon, Li-Mei Lin
BACKGROUND: The practice patterns of a hybrid open cerebrovascular/neuroendovascular (CVNV) neurosurgeon in early academic practice is unknown. METHODS: We performed a multi-institutional retrospective cohort study of patients with cerebral aneurysms that were treated within the first 24 months of the neurosurgeon's practice. RESULTS: A total of 533 aneurysms were treated by the three senior authors within the first 24 months of their academic practice...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28767503/neuroendovascular-surgery-for-the-treatment-of-ischemic-stroke
#5
Arthur Wang, Meic H Schmidt
This review discusses modern therapeutic interventions for acute ischemic stroke with a focus on endovascular therapy. In 2015, the American Heart Association (AHA) made major changes to the guidelines for the endovascular treatment of acute ischemic stroke. The Class IA indications for endovascular therapy of stroke patients include symptom onset within 6 hours, proven large vessel occlusion of an artery in the anterior circulation, and the use of a stent retriever as part of the mechanical thrombectomy. Advanced perfusion imaging helps identify patients with a low ratio of ischemic core to salvageable penumbra...
June 22, 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28710082/accuracy-and-precision-of-venous-pressure-measurements-of-endovascular-microcatheters-in-the-setting-of-dural-venous-sinus-stenosis
#6
Michael B Avery, Sheryl Sambrano, Javed Khader Eliyas, Muneer Eesa, Alim P Mitha
INTRODUCTION: Dural venous sinus stenosis (DVSS) may lead to increased intracranial pressure, sometimes requiring a stent if a high pressure gradient exists. Many neuroendovascular physicians use microcatheters to measure gradients, yet there are no studies comparing the accuracies and precisions of modern day microcatheters. We examined pressure recordings from five commonly used microcatheters in an experimental DVSS model. METHODS: Using a programmable pump, dynamic flow was established in a closed circuit mimicking the venous sinus waveform...
July 14, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28706116/training-standards-in-neuroendovascular-surgery-program-accreditation-and-practitioner-certification
#7
REVIEW
Arthur L Day, Adnan H Siddiqui, Philip M Meyers, Tudor G Jovin, Colin P Derdeyn, Brian L Hoh, Howard Riina, Italo Linfante, Osama Zaidat, Aquilla Turk, Jay U Howington, J Mocco, Andrew J Ringer, Erol Veznedaroglu, Alexander A Khalessi, Elad I Levy, Henry Woo, Robert Harbaugh, Steven Giannotta
BACKGROUND AND PURPOSE: Neuroendovascular surgery is a medical subspecialty that uses minimally invasive catheter-based technology and radiological imaging to diagnose and treat diseases of the central nervous system, head, neck, spine, and their vasculature. To perform these procedures, the practitioner needs an extensive knowledge of the anatomy of the nervous system, vasculature, and pathological conditions that affect their physiology. A working knowledge of radiation biology and safety is essential...
August 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28689397/invention-of-the-guide-catheter-irrigation-monitoring-device-for-neuroendovascular-therapy
#8
Ayca Ozkul, Jong-Hyun Park, Dong-Seung Shin, Ali Yilmaz, Bum-Tae Kim
OBJECTIVE: The thromboembolic events during neuroendovascular therapy (NET) are the major complications of concern that can be occasionally fatal. The thrombotic occlusion of the guide catheter for NET is thought to be the risk of the thromboembolic events. We have developed an idea for inventing the monitoring system of the continuous irrigation through the guide catheter. We herein present a unique invention of the guide catheter irrigation monitoring device. METHODS: We have developed ideas for preventing the thrombotic occlusion of the guide catheter...
July 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28679854/acute-occlusions-of-dual-layer-carotid-stents-after-endovascular-emergency-treatment-of-tandem-lesions
#9
Umut Yilmaz, Heiko Körner, Ruben Mühl-Benninghaus, Andreas Simgen, Catherine Kraus, Silke Walter, Stefanie Behnke, Klaus Faßbender, Wolfgang Reith, Marcus M Unger
BACKGROUND AND PURPOSE: A new generation of carotid artery stents that uses a second micromesh layer to reduce embolic events during carotid artery stenting has recently been introduced. The purpose of this study was to compare acute occlusion rates of these new dual-layer stents with those of single-layer stents in the setting of emergency carotid artery stenting with intracranial mechanical thrombectomy in acute ischemic stroke. METHODS: Consecutive patients with acute tandem (intra- and extracranial) lesions of the anterior circulation who were endovascularly treated at our institution were identified from our registry of neuroendovascular interventions...
August 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28675348/navien-catheter-experience-in-neuroendovascular-interventions
#10
Gaurav Jindal, Luciano Giacon, Moronke Iyoha, Timothy Miller, Francois Aldrich, Marc Simard, Ravishankar Shivashankar, Dheeraj Gandhi
Purpose Advancements in catheter technology have allowed for greater flexibility and trackability. We report 265 consecutive, single-center neurointerventional cases using the Navien guide catheter. Materials and methods Retrospective analysis was performed of consecutive intracranial endovascular procedures utilizing the Navien catheter. Data collected included procedure type, catheters, guide catheter position, cervical access artery tortuosity grade and complications. Results The 5 French catheter was used in 130 cases...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28669268/introduction-to-the-supratentorial-cerebral-arteriovenous-malformation-video-supplement
#11
Robert M Starke, Felipe C Albuquerque, Michael T Lawton
It is with great pleasure that we present this Neurosurgical Focus video supplement on supratentorial cerebral arteriovenous malformations (AVMs). We were privileged to view a remarkable number of outstanding videos demonstrating current state-of-the-art management of brain AVMs using endovascular and microsurgical modalities. Careful and critical review was required to narrow down the submitted videos to a workable volume for this supplement, which reflects the excellent work being done at multiple centers with these lesions...
July 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28655208/accuracy-in-identifying-the-source-of-subarachnoid-hemorrhage-in-the-setting-of-multiple-intracranial-aneurysms
#12
Jennifer L Orning, Sophia F Shakur, Ali Alaraj, Mandana Behbahani, Fady T Charbel, Victor A Aletich, Sepideh Amin-Hanjani
BACKGROUND: Subarachnoid hemorrhage cases with multiple cerebral aneurysms frequently demonstrate a hemorrhage pattern that does not definitively delineate the source aneurysm. In these cases, rupture site is ascertained from angiographic features of the aneurysm such as size, morphology, and location. OBJECTIVE: To examine the frequency with which such features lead to misidentification of the ruptured aneurysm. METHODS: : Records of patients who underwent surgical clipping of a ruptured aneurysm at our institution between 2004 and 2014 and had multiple aneurysms were retrospectively reviewed...
June 26, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28646445/update-on-neurocritical-care-of-stroke
#13
Jason Siegel, Michael A Pizzi, J Brent Peel, David Alejos, Nnenne Mbabuike, Benjamin L Brown, David Hodge, W David Freeman
PURPOSE OF REVIEW: This review will highlight the recent advancements in acute ischemic stroke diagnosis and treatment, with special attention to new features and recommendations of stroke care in the neurocritical care unit. RECENT FINDINGS: New studies suggest that pre-hospital treatment of stroke with mobile stroke units and telestroke technology may lead to earlier stroke therapy with intravenous tissue plasminogen activator (tPA), and recent studies show tPA can be given in previously contraindicated situations...
August 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28619972/staged-curative-treatment-of-a-complex-direct-carotid-cavernous-fistula-with-a-large-arterial-defect-and-an-oversized-internal-carotid-artery
#14
Matthew T Bender, Li-Mei Lin, Alexander L Coon, Geoffrey P Colby
This is a case of a high-flow, post-traumatic direct carotid-cavernous fistula with a widened arterial defect and a large-diameter internal carotid artery (ICA). The unique aspect of this case is the oversized ICA, >8mm in diameter, which is both a pathological and a therapeutic challenge, given the lack of available neuroendovascular devices for full vessel reconstruction. We present a planned two-stage embolisation paradigm for definitive treatment. Transarterial coil embolisation is performed as the first stage to disconnect the fistula and normalise flow in the ICA...
June 14, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28602632/brachial-ankle-pulse-wave-velocity-as-a-predictor-of-silent-cerebral-embolism-after-carotid-artery-stenting
#15
Tomoaki Murakami, Hajime Nakamura, Takeo Nishida, Tomohiko Ozaki, Katsunori Asai, Tomoki Kidani, Yoshinori Kadono, Manabu Sakaguchi, Toshiki Yoshimine, Haruhiko Kishima
BACKGROUND: In neuroendovascular therapy, the effect of arterial stiffness on postprocedural cerebral thromboembolism is unknown. In this observational study, we examined the relationship between cerebral thromboembolism after carotid artery stenting and arterial stiffness. METHODS: From April 2015 to February 2017, we enrolled consecutive patients undergoing scheduled carotid artery stenting in our institution. In all patients, preprocedural brachial-ankle pulse wave velocity was used to assess arterial stiffness, whereas the number of new cerebral ischemic lesions on diffusion-weighted magnetic resonance imaging was assessed after treatment...
October 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28578114/inside-vietnam-s-largest-neurosurgery-department
#16
Constantine L Karras, Huy Minh Tran, David Dornbos, Phong Nguyen, Shahid M Nimjee, Daniel M Prevedello, Ciarán J Powers
Cho Ray Hospital is the premier tertiary care center in Ho Chi Minh City, Vietnam's most populous city. The neurosurgical department was founded in 1958 and is currently one of the busiest in the world. Last year the department was responsible for more than 10,000 neurosurgical operations, excluding neuroendovascular cases. Most of the elective cases are craniotomies for complex lesions such as aneurysms, arteriovenous malformations, skull base tumors, gliomas, and meningiomas. Although the neurosurgeons within the department are technically gifted, doing more with less predominates as the mantra at Cho Ray Hospital...
September 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28565987/prolapse-of-the-pipeline-embolization-device-in-aneurysms-incidence-management-and-outcomes
#17
Visish M Srinivasan, Andrew P Carlson, Maxim Mokin, Jacob Cherian, Stephen R Chen, Ajit Puri, Peter Kan
OBJECTIVE The Pipeline embolization device (PED) is frequently used in the treatment of anterior circulation aneurysms, especially around the carotid siphon, with generally excellent results. However, the PED has its own unique technical challenges, including the occurrence of device foreshortening or migration leading to prolapse into the aneurysm. The authors sought to determine the incidence of this phenomenon, the rescue strategies, and outcomes. METHODS Four institutional databases of neuroendovascular procedures were reviewed for cases of intracranial aneurysms treated with PEDs...
June 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28492442/neuroendovascular-intervention-evolving-at-the-intersection-of-neurosurgery-and-neuro-ophthalmology
#18
Jason M Davies, L Nelson Hopkins
No abstract text is available yet for this article.
June 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28481391/novel-hybrid-operating-table-for-neuroendovascular-treatment
#19
Park Jong-Hyun, Mun Jonghyeon, Shin Dong-Seung, Kim Bum-Tae
BACKGROUND: The integration of interventional and surgical techniques is requiring the development of a new working environment equipped for the needs of an interdisciplinary neurovascular team. However, conventional surgical and interventional tables have only a limited ability to provide for these needs. We have developed a concept mobile hybrid operating table that provides the ability for such a team to conduct both endovascular and surgical procedures in a single session. METHODS: We developed methods that provide surgeons with angiography-guided surgery techniques for use in a conventional operating room environment...
March 25, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28449126/results-of-the-answer-trial-using-the-pulserider-for-the-treatment-of-broad-necked-bifurcation-aneurysms
#20
Alejandro M Spiotta, Colin P Derdeyn, Satoshi Tateshima, Jay Mocco, R Webster Crowley, Kenneth C Liu, Lee Jensen, Koji Ebersole, Alan Reeves, Demetrius K Lopes, Ricardo A Hanel, Eric Sauvageau, Gary Duckwiler, Adnan Siddiqui, Elad Levy, Ajit Puri, Lee Pride, Roberta Novakovic, M Imran Chaudry, Raymond D Turner, Aquilla S Turk
BACKGROUND: The safety and probable benefit of the PulseRider (Pulsar Vascular, Los Gatos, California) for the treatment of broad-necked, bifurcation aneurysms was studied in the context of the prospective, nonrandomized, single arm clinical trial-the Adjunctive Neurovascular Support of Wide-neck aneurysm Embolization and Reconstruction (ANSWER) Trial. OBJECTIVE: To present the results of the United States cases employing the PulseRider device as part of the ANSWER clinical trial...
July 1, 2017: Neurosurgery
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