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ABSTRACT


21 abril 2016

AMERICAN JOURNAL OF NEURORADIOLOGY. Endovascular Treatment versus Best Medical Treatment in Patients with Acute Ischemic Stroke: A Meta-Analysis of Randomized Controlled Trials

A.I. Qureshi, M.F. Ishfaq, H.A. Rahman and A.P. Thomas

BACKGROUND AND PURPOSE: Endovascular treatment has emerged as a minimally invasive technique for patients with acute ischemic stroke to achieve recanalization. Our aim was to determine the effects of endovascular treatment on clinical and safety outcomes compared with best medical treatment.

01 marzo 2007

JOURNAL OF NEUROSURGERY. Clinical and radiographic analysis of cervical disc arthroplasty compared with allograft fusion: a randomized controlled clinical trial

Praveen V. Mummaneni, M.D.1, J. Kenneth Burkus, M.D.2, Regis W. Haid, M.D.3, Vincent C. Traynelis, M.D.4, and Thomas A. Zdeblick, M.D.5

OBJECT: The authors report the results of a prospective randomized multicenter study in which the results of cervical disc arthroplasty were compared with anterior cervical discectomy and fusion (ACDF) in patients treated for symptomatic single-level cervical degenerative disc disease (DDD).

01 julio 2016

JOURNAL OF NEUROSURGERY. Preoperative and postoperative predictors of long-term outcome after endovascular treatment of poor-grade aneurysmal subarachnoid hemorrhage

Bing Zhao, MD1,2,*, Hua Yang, MD3, Kuang Zheng, MD1, Zequn Li, MD1, Ye Xiong, MD1, Xianxi Tan, MD1, Ming Zhong, MD1, and the AMPAS Study Group

OBJECTIVE: An increasing number of patients with poor-grade aneurysmal subarachnoid hemorrhage (aSAH) have received endovascular treatment. Endovascular treatment of poor-grade aSAH, however, is based on single-center retrospective studies, and predictors of long-term outcome have not been well defined. Using results from a multicenter prospective registry, the authors aimed to develop preoperative and postoperative prognostic models to predict poor outcome after endovascular treatment of poor-grade aSAH.

01 julio 2016

JOURNAL OF NEUROSURGERY. Carotid artery stenosis with a high-intensity signal plaque on time-of-flight magnetic resonance angiography and association with evidence of intraplaque hypoxia

Atsushi Ogata, MD, PhD1, Masatou Kawashima, MD, PhD1, Tomihiro Wakamiya, MD, PhD1, Masashi Nishihara, MD2, Jun Masuoka, MD, PhD1, Yukiko Nakahara, MD, PhD1, Ryo Ebashi, MD1, Kohei Inoue, MD, PhD1, Yukinori Takase, MD, PhD1, Hiroyuki Irie, MD, PhD2, and Tatsuya Abe, MD, PhD1

OBJECTIVE: Hypoxia induces angiogenesis and plays a major role in the progression of carotid plaques. During carotid intervention, plaques with high-intensity signals on time-of-flight (TOF) magnetic resonance angiography (MRA) often cause ischemic stroke and embolic complications. However, the role of intraplaque hypoxia before carotid endarterectomy (CEA) and carotid artery stenting is not presently understood. In this study the authors aimed to investigate the relationship between intraplaque hypoxia and MRA findings.

24 junio 2016

JOURNAL OF NEUROSURGERY. Stent deployment protocol for optimized real-time visualization during endovascular neurosurgery

Michael A. Silva, BA, Alfred P. See, MD, Hormuzdiyar H. Dasenbrock, MD, Ramsey Ashour, MD, Priyank Khandelwal, MBBS, Nirav J. Patel, MD, Kai U. Frerichs, MD, and Mohammad A. Aziz-Sultan, MD

Abstract: Successful application of endovascular neurosurgery depends on high-quality imaging to define the pathology and the devices as they are being deployed. This is especially challenging in the treatment of complex cases, particularly in proximity to the skull base or in patients who have undergone prior endovascular treatment. The authors sought to optimize real-time image guidance using a simple algorithm that can be applied to any existing fluoroscopy system. Exposure management (exposure level, pulse management) and image post-processing parameters (edge enhancement) were modified from traditional fluoroscopy to improve visualization of device position and material density during deployment. Examples include the deployment of coils in small aneurysms, coils in giant aneurysms, the Pipeline embolization device (PED), the Woven EndoBridge (WEB) device, and carotid artery stents. The authors report on the development of the protocol and their experience using representative cases.

17 junio 2016

JOURNAL OF NEUROSURGERY. Effect of short-term ε-aminocaproic acid treatment on patients undergoing endovascular coil embolization following aneurysmal subarachnoid hemorrhage

Mahdi Malekpour, MD1, Charles Kulwin, MD1, Bradley N. Bohnstedt, MD1, Golnar Radmand, MSc2, Rishabh Sethia, BS1, Stephen K. Mendenhall, MD1, Jonathan Weyhenmeyer, MD1, Benjamin K. Hendricks, MD1, Thomas Leipzig, MD1, Troy D. Payner, MD1, Mitesh V. Shah, MD1, John Scott, MD1, Andrew DeNardo, MD1, Daniel Sahlein, MD1, and Aaron A. Cohen-Gadol, MD, MSc1,3

OBJECTIVE: Aneurysmal rebleeding before definitive obliteration of the aneurysm is a cause of mortality and morbidity. There are limited data on the role of short-term antifibrinolytic therapy among patients undergoing endovascular intervention.

17 junio 2016

JOURNAL OF NEUROSURGERY. Is there an inherited anatomical conformation favoring aneurysmal formation of the anterior communicating artery?

Romain Bourcier, MD1,2,3, Cédric Lenoble, MD1, Béatrice Guyomarch-Delasalle, MSc2,3, Benjamin Daumas-Duport, MD1, Chrysanthi Papagiannaki, MD4, Richard Redon, PhD2,3, and Hubert Desal, MD, PhD1,2,3

OBJECTIVE: The pathophysiological mechanisms responsible for the formation of intracranial aneurysms (IAs) remain only partially elucidated. However, current evidence suggests a genetic component. The purpose of this study was to investigate the specific anatomical variations in the arterial complex that are associated with the presence of anterior communicating artery (ACoA) aneurysms in the familial forms of IAs.

10 junio 2016

JOURNAL OF NEUROSURGERY. Patency of anterior circulation branch vessels after Pipeline embolization: longer-term results from 82 aneurysm cases

Leonardo Rangel-Castilla, MD1,4, Stephan A. Munich, MD1,4, Naser Jaleel, MD, PhD1,4, Marshall C. Cress, MD1,4, Chandan Krishna, MD1,4, Ashish Sonig, MD, MS, MCh1,4, Kenneth V. Snyder, MD, PhD1,2,3,4, Adnan H. Siddiqui, MD, PhD1,2,4,5,6, and Elad I. Levy, MD, MBA1,2,4,5

OBJECTIVE: The Pipeline Embolization Device (PED) has become increasingly used for the treatment of intracranial aneurysms. Given its high metal surface area coverage, there is concern for the patency of branch vessels that become covered by the device. Limited data exist regarding the patency of branch vessels adjacent to aneurysms that are covered by PEDs. The authors assessed the rate of intracranial internal carotid artery, anterior circulation branch vessel patency following PED placement at their institution.

03 junio 2016

JOURNAL OF NEUROSURGERY. A leap forward in the endovascular management of acute basilar artery occlusion since the appearance of stent retrievers: a single-center comparative study

Robert Fahed, MD1, Federico Di Maria, MD1, Charlotte Rosso, MD, PhD2,3,4, Nader Sourour, MD1, Vincent Degos, MD, PhD3,5, Sandrine Deltour, MD2, Flore Baronnet-Chauvet, MD, PhD2,3, Anne Léger, MD2, Sophie Crozier, MD, PhD2, Joseph Gabrieli, MD1,3, Yves Samson, MD2,3,4, Jacques Chiras, MD1,3, and Frédéric Clarençon, MD, PhD1,3

OBJECTIVE: Contrary to acute ischemic stroke involving the anterior circulation, no randomized trial has yet demonstrated the safety and effectiveness of endovascular management in acute basilar artery occlusion (BAO). Recently developed thrombectomy devices, such as stentrievers and aspiration systems, have helped in improving the endovascular management of acute ischemic stroke. The authors sought to assess the impact of these devices in the endovascular treatment of acute BAO.

03 junio 2016

JOURNAL OF NEUROSURGERY. Efficacy of a coaxial system with a compliant balloon catheter for navigation of the Penumbra reperfusion catheter in tortuous arteries: technique and case experience

Kazuki Takahira, MD1, Taketo Kataoka, MD2, Tatsuya Ogino, MD1, Hideki Endo, MD1, and Hirohiko Nakamura, MD, PhD1

OBJECTIVE: The authors describe a method by which they easily and atraumatically navigate a large-bore reperfusion catheter of the Penumbra system to an embolus by using a coaxial system with a compliant balloon catheter in patients with tortuous arteries.

03 junio 2016

JOURNAL OF NEUROSURGERY. Impact of subclinical coronary artery disease on the clinical outcomes of carotid endarterectomy

Hyunwook Kwon, MD1, Dae Hyuk Moon, MD, PhD2, Youngjin Han, MD1, Jong-Young Lee, MD, PhD3, Sun U Kwon, MD, PhD4, Dong-Wha Kang, MD, PhD4, Suk Jung Choo, MD, PhD5, Tae-Won Kwon, MD, PhD1, Min-Ju Kim, MSc6, and Yong-Pil Cho, MD, PhD1

OBJECTIVE: Controversy persists regarding the optimal management of subclinical coronary artery disease (CAD) prior to carotid endarterectomy (CEA) and the impact of CAD on clinical outcomes after CEA. This study aimed to evaluate the short-term surgical risks and long-term outcomes of patients with subclinical CAD who underwent CEA.

01 junio 2015

JOURNAL OF NEUROSURGERY. Ultrasound-induced opening of the blood-brain barrier to enhance temozolomide and irinotecan delivery: an experimental study in rabbits

Kevin Beccaria, MD1,2, Michael Canney, PhD1, Lauriane Goldwirt, PharmD, PhD3, Christine Fernandez, PharmD, PhD3, Julie Piquet, MS4, Marie-Cécile Perier, MSc5, Cyril Lafon, PhD6, Jean-Yves Chapelon, PhD6, and Alexandre Carpentier, MD, PhD7,8

OBJECT: The blood-brain barrier (BBB) limits the intracerebral penetration of drugs and brain tumor treatment efficacy. The effect of ultrasound-induced BBB opening on the intracerebral concentration of temozolomide (TMZ) and irinotecan (CPT-11) was assessed.

01 junio 2016

JOURNAL OF NEUROSURGERY. Age-related outcomes following intracranial aneurysm treatment with the Pipeline Embolization Device: a subgroup analysis of the IntrePED registry

Waleed Brinjikji, MD1, David F. Kallmes, MD1,2, Harry J. Cloft, MD, PhD1,2, and Giuseppe Lanzino, MD1,2

OBJECT: The association between age and outcomes following aneurysm treatment with flow diverters such as the Pipeline Embolization Device (PED) have not been well established. Using the International Retrospective Study of the Pipeline Embolization Device (IntrePED) registry, the authors assessed the age-related clinical outcomes of patients undergoing aneurysm embolization with the PED.

01 junio 2016

JOURNAL OF NEUROSURGERY. Initial experience with dual-lumen balloon catheter injection for preoperative Onyx embolization of skull base paragangliomas

Travis R. Ladner, BA1, Lucy He, MD2, Brandon J. Davis, MD, PhD2, George L. Yang, BA1, George B. Wanna, MD2,3, and J Mocco, MD, MS2

OBJECT: Paragangliomas are highly vascular head and neck tumors for which preoperative embolization is often considered to facilitate resection. The authors evaluated their initial experience using a dual-lumen balloon to facilitate preoperative embolization in 5 consecutive patients who underwent preoperative transarterial Onyx embolization assisted by the Scepter dual-lumen balloon catheter between 2012 and 2014.

01 julio 2016

JOURNAL OF NEUROSURGERY. The safety of Pipeline flow diversion in fusiform vertebrobasilar aneurysms: a consecutive case series with longer-term follow-up from a single US center

Sabareesh K. Natarajan, MD, MS1,2, Ning Lin, MD1,2,3, Ashish Sonig, MD, MS, MCh1,2, Ansaar T. Rai, MD4, Jeffrey S. Carpenter, MD4, Elad I. Levy, MD, MBA1,2,5,6, and Adnan H. Siddiqui, MD, PhD1,2,5,6,7

OBJECT: Pessimism exists regarding flow diversion for posterior circulation aneurysms because of reports of perforator territory infarcts and delayed ruptures. The authors report the results of patients who underwent Pipeline Embolization Device (PED) flow diversion using novel strategies for treatment of fusiform posterior circulation aneurysms, and compare these results with those from previously reported series.

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