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Rongjie Zhang, Jian Zhou, Jiaxuan Feng, Zhiqing Zhao, Junjun Liu, Zhenjiang Li, Rui Feng, Zaiping Jing
BACKGROUND: How to choose the proximal landing zone in endovascular interventions for a patient with a patent retrograde false lumen in dissection of the ascending aorta and aortic arch remains unclear. This study sought to report the safety and efficiency of inducing thrombosis of the retrograde false lumen to enhance a proximal landing zone to treat retrograde type A aortic dissection. METHODS: This study included 9 patients with retrograde type A aortic dissection treated with a 2-stage operation strategy between January 2015 and January 2016...
September 22, 2016: Journal of Thoracic and Cardiovascular Surgery
Daniel R Felbaum, Kyle Mueller, Ai-Hsi Liu, Rocco A Armonda
Preoperative embolization of meningiomas can be safely performed using a variety of embolic agents. Most commonly, the vascular supply from branches of the external carotid artery is the target of embolization. In our report, we detail the treatment of a patient with a parafalcine meningioma that received its supply via branches of the anterior cerebral artery. One of the feeder vessels appeared to contain a dysplastic aneurysmal dilatation of the vessel. Due to patient circumstances, embolization was performed using standard microcatheterization techniques to minimize intraoperative blood loss...
September 11, 2016: Curēus
L Ribé, C D Bicknell, R G Gibbs, N Burfitt, M P Jenkins, N Cheshire, M Hamady
PURPOSE: The aim of this paper is to report our experience of type II endoleak treatment after endovascular aneurysm repair with intra-arterial injection of the embolizing liquid material, Onyx liquid embolic system. METHODS: From 2005 to 2012, we performed a retrospective review of 600 patients, who underwent endovascular repair of an abdominal aortic aneurysm. During this period, 18 patients were treated with Onyx for type II endoleaks. PRINCIPAL FINDINGS: The source of the endoleak was the internal iliac artery in seven cases, inferior mesenteric artery in seven cases and lumbar arteries in four cases...
September 29, 2016: Vascular
Joohyun Kim, Jang-Bo Lee, Tai-Hyoung Cho, Junseok W Hur
PURPOSE: Onyx embolization is one of the standard treatments for brain arteriovenous malformations (AVMs) and is a promising method for spinal AVMs as well. Its advantages have been emphasized, and few complications have been reported with Onyx embolization in spinal AVMs. Here, we report an incidental anterior spinal artery (ASA) occlusion due to Onyx reflux during embolization of a spinal type II AVM. METHODS: A 15-year-old boy presented with weakness in both upper and lower extremities...
September 26, 2016: European Spine Journal
Hilwati Hashim, A Sobri Muda, Aida Abdul Aziz, Zuhanis Abdul Hamid
INTRODUCTION: Embolisation has long been used as an adjunct to surgical resection in the treatment of brain arteriovenous malformation (bAVM). The most commonly used embolic material, n-butylcyanoacrylate glue, requires experience and skill to handle its quick and unpredictable flow and polymerisation. A new liquid embolic agent, ethylene vinyl alcohol copolymer (Onyx), is less adhesive and polymerises slowly, which provides better control for radiologists performing embolisation. OBJECTIVE: To report our experience in embolisation using Onyx alone or in combination with histoacryl for bAVM embolisation in our tertiary referral centre...
July 2016: Malaysian Journal of Medical Sciences: MJMS
Ankit Kansal, Prateek Srinet, Richard Peter Manes
OBJECTIVES: To evaluate the use of a new tumor embolization agent, Onyx (Covidien, Dublin, Ireland), for the use of intraoperative embolization of a sinonasal unclassified spindle cell sarcoma. METHODS: A 45-year-old female patient presented to the rhinology clinic with a nasal mass. A biopsy revealed a highly vascular mass consistent with a sinonasal unclassified spindle cell sarcoma. Secondary to its extensive vascularity, the patient underwent preoperative transarterial embolization (TAE) before definitive resection...
July 2016: Journal of Neurological Surgery Reports
Hiroyuki Ohnishi, Shigeru Miyachi, Kenichi Murao, Ryo Hiramatsu, Kenkichi Takahashi, Hideyuki Ohnishi, Toshihiko Kuroiwa
We describe the efficacy and technical aspects of infiltrated preoperative embolization of meningioma by penetration of very dilute glue. In this method, a 13% n-butyl-cyanoacrylate (NBCA)-lipiodol mixture is injected extremely slowly from the middle meningeal artery (MMA) in a similar manner to plug and push injection of ethylene vinyl alcohol copolymer mixed with tantalum and dimethyl sulfoxide (Onyx(®)) after the tortuous side feeders are proximally embolized. The glue is infiltrated into small tumor arteries and extends to inaccessible feeders from deep meningeal arteries...
September 16, 2016: Neurologia Medico-chirurgica
Xianli Lv, Xiheng Chen, Huijian Ge, Hongwei He, Chuhan Jiang, Youxiang Li
OBJECTIVE: The purpose of this study is to report our initial experience of Onyx embolization of the high-flow fistula part of AVM using a double-lumen balloon catheter. MATERIALS AND METHODS: Scepter C balloon catheter was utilized in 2 patients with AVMs associated with high-flow fistulas. Locations of the fistulas were anterior cerebral artery and middle cerebral artery (MCA). RESULTS: Onyx embolization was successful in 2 cases, resulting in eliminating the high-flow fistula part of the AVM...
September 12, 2016: World Neurosurgery
Connie Duer, Tom Tomasi, Charles I Abramson
Even in the best situations, the artificial social constructs of captivity alter natural elephant behavior and unfortunately create distress. Asian elephants are powerful and intelligent animals that require consideration for their well-being and prudent management. The males present particular difficulties due to a temporary state of heightened aggressive behavior unique to male elephants called "musth." When he is in this state, the danger the elephant poses to other animals and the people around him is considerable...
September 12, 2016: Psychological Reports
Tom De Beule, Jan Vranckx, Peter Verhamme, Veerle Labarque, Marie-Anne Morren, Inge Fourneau, Geert Maleux
BACKGROUND: The technical and clinical outcomes of catheter-directed embolization for peripheral arteriovenous malformations (AVM) using Onyx® (ethylene-vinyl alcohol copolymer) are not well documented. The purpose of this study was to retrospectively assess the safety, technical outcomes and clinical outcomes of catheter-directed Onyx® embolisation for the treatment of symptomatic peripheral AVMs. PATIENTS AND METHODS: Demographics, (pre-)interventional clinical and radiological data were assessed...
September 6, 2016: VASA. Zeitschrift Für Gefässkrankheiten
Bradley A Gross, Felipe C Albuquerque, Karam Moon, Cameron G McDougall
OBJECTIVE Many small series and technical reports chronicle the evolution of endovascular techniques for cranial dural arteriovenous fistulas (dAVFs) over the past 3 decades, but reports of large patient series are lacking. The authors provide a thorough analysis of clinical and angiographic outcomes across a large patient cohort. METHODS The authors reviewed their endovascular database from January 1996 to September 2015 to identify patients harboring cranial dAVFs who were treated initially with endovascular approaches...
September 2, 2016: Journal of Neurosurgery
Bradley A Gross, Felipe C Albuquerque, Karam Moon, Cameron G McDougall
BACKGROUND: With the introduction of Onyx, transarterial embolization has become the most common endovascular approach to treating dural arteriovenous fistulas (dAVFs), often via the middle meningeal or occipital arteries. The ascending pharyngeal artery (APA) is a less frequently explored transarterial route because of its small caliber, potential anastomoses to the internal carotid and vertebral arteries, and vital supply to lower cranial nerves. OBJECTIVE: To review our institutional experience and highlight the prevalence of APA supply to dAVFs and cases where it is a safe and effective pedicle for embolization...
August 31, 2016: Journal of Neurointerventional Surgery
Benjamin B Lind, Charles S Briggs, John Golan, NavYash Gupta
We present the case of a patient with a refractory type II endoleak treated with translumbar Onyx with passage of the Onyx material into the endograft and subsequent embolization to the infrainguinal vasculature. This report represents a new complication of Onyx embolization that, to our knowledge, has not previously been described in the literature.
August 20, 2016: Annals of Vascular Surgery
Frédéric Clarençon, Federico Di Maria, Joseph Gabrieli, Alexandre Carpentier, Silvia Pistocchi, Bruno Bartolini, Chiheb Zeghal, Jacques Chiras, Nader-Antoine Sourour
No abstract text is available yet for this article.
October 2016: Acta Neurochirurgica
Collin M Torok, Raul G Nogueira, Albert J Yoo, Thabele M Leslie-Mazwi, Joshua A Hirsch, Christopher J Stapleton, Aman B Patel, James D Rabinov
PURPOSE: The purpose of this article is to present a case series of transarterial venous sinus occlusion for dural arteriovenous fistulas (DAVFs) of the transverse and sigmoid sinuses. MATERIALS AND METHODS: From 2006 to 2012, 11 patients with DAVF of the transverse and sigmoid sinuses were treated with transarterial closure of the affected venous sinus using ethylene vinyl alcohol copolymer (ONYX). The consecutive retrospective cohort included six female and five male patients with an age range of 30-79...
August 16, 2016: Interventional Neuroradiology
M Saeed Kilani, V Lepennec, P Petit, G Magalon, D Casanova, J-M Bartoli, V Vidal
PURPOSE: The aim of this study was to report our experience in embolization of high flow peripheral arteriovenous malformations (AVMs) with Onyx. Material and methods Retrospective study of Nineteen patients (10 men, 9 women) with peripheral high-flow AVMs who were treated with arteruial embolization using Onyx were retrospectively included. AVMs were located in the head and neck (6), extremities (5), chest (2), kidney (2), uterus (2), pelvis (1) and parietal (1). In 13 patients, embolization was done using Onyx only...
August 12, 2016: Diagnostic and Interventional Imaging
Frédéric Clarençon, Federico Di Maria, Joseph Gabrieli, Alexandre Carpentier, Silvia Pistochi, Bruno Bartolini, Chiheb Zeghal, Jacques Chiras, Nader-Antoine Sourour
Transverse-sigmoid dural arteriovenous fistulas (TS DAVFs) can be challenging to treat by endovascular means. Indeed, a total cure of the fistula can only be achieved when complete occlusion of the fistulous point(s) is obtained by penetration of the embolic agent. However, in some cases, especially for transosseous branches from extracranial arteries like the occipital artery (OcA) or the superficial temporal artery (STA), such penetration is usually poor, leading to major proximal reflux and incomplete fistula obliteration...
October 2016: Acta Neurochirurgica
Felipe Padovani Trivelato, Luciano Bambini Manzato, Paulo Moacir Mesquita Filho, Alexandre Cordeiro Ulhôa, José Ricardo Vanzin, Daniel Giansante Abud, Marco Túlio Salles Rezende
INTRODUCTION: The authors present a retrospective series of their clinical experience in the treatment of cavernous dural arteriovenous fistulas (DAVF) by direct transorbital puncture of the cavernous sinus as an alternative to the endovascular approach. METHODS: Between October 2012 and September 2014, eight patients harboring cavernous DAVF underwent percutaneous treatment by direct transorbital puncture of the cavernous sinus at three institutions. All patients presented with ocular symptoms...
August 9, 2016: Clinical Neuroradiology
Luke M Andrighetto, Niki K Burns, Paul G Stevenson, James R Pearson, Luke C Henderson, Christopher J Bowen, Xavier A Conlan
In-silico optimisation of a two-dimensional high performance liquid chromatography (2D-HPLC) separation protocol has been developed for the interrogation of methamphetamine samples including model, real world seizure, and laboratory synthesised samples. The protocol used Drylab(®) software to rapidly identify the optimum separation conditions from a library of chromatography columns. The optimum separation space was provided by the Phenomonex Kinetex PFP column (first dimension) and an Agilent Poroshell 120 EC-C18 column (second dimension)...
September 2016: Forensic Science International
Narayanan Thulasidasan, Srividhiya Sriskandakumar, Shahzad Ilyas, Tarun Sabharwal
PURPOSE: Percutaneous transcatheter embolization is currently the preferred treatment for ruptured or enlarging renal angiomyolipoma (AML), although the optimum choice of embolic material has not yet been established. We present mid- to long-term outcomes following embolization of AMLs with Onyx. MATERIALS AND METHODS: Ten AMLs in seven patients (including two with tuberous sclerosis) were embolized with Onyx. Patients were followed-up clinically, with tumour size and renal function measured pre- and post-procedure...
July 28, 2016: Cardiovascular and Interventional Radiology
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