Foros de Conocimiento
medtronic PRODUCTOS
boston_scientific PRODUCTOS
TERUMO PRODUCTOS
Biotronik PRODUCTOS
Sirtex PRODUCTOS
Striker Neurovascular PRODUCTOS
BIOSENSORS PRODUCTOS

ESTUDIOS


03 febrero 2015

STROKE. Clinical Sciences. How Sustained Is 24-Hour Diffusion-Weighted Imaging Lesion Reversal? Serial Magnetic Resonance Imaging in a Patient Cohort Thrombolyzed Within 4.5 Hours of Stroke Onset

Sebastien Soize, MD; Marie Tisserand, MD; Sylvain Charron, PhD*; Guillaume Turc, MD*; Wagih Ben Hassen, MD; Marc-Antoine Labeyrie, MD; Laurence Legrand, MD; Jean-Louis Mas, MD; Laurent Pierot, PhD; Jean-François Meder, PhD; Jean-Claude Baron, ScD; Catherine Oppenheim, PhD

Background and Purpose: Here, we assessed how sustained is reversal of the acute diffusion lesion (RAD) observed 24 hours after intravenous thrombolysis, and the relationships between RAD fate and early neurological improvement.

10 febrero 2015

STROKE. Clinical Sciences. Using Standard First-Pass Perfusion Computed Tomographic Data to Evaluate Collateral Flow in Acute Ischemic Stroke

Hui Chen, MD*; Bing Wu, MD, PhD*; Nan Liu, MD; Max Wintermark, MD; Zihua Su, PhD; Ying Li, MD; Jun Hu, MD, PhD; Yongwei Zhang, MD; Weiwei Zhang, MD, PhD; Guangming Zhu, MD, PhD

Background and Purpose: The study aims to determine whether volume transfer constant (Ktrans) maps calculated from first-pass perfusion computed tomographic data are a biomarker of cerebral collateral circulation and predict the clinical outcome in acute ischemic stroke caused by proximal arterial occlusion.

17 febrero 2015

STROKE. Early Mobilization After Stroke. Early Adoption but Limited Evidence

Julie Bernhardt, PhD; Coralie English, PhD; Liam Johnson, PhD; Toby B. Cumming, PhD

In the last decade, increasing attention has been paid to understanding the components of care that might contribute to the stroke unit effect. Early mobilization, in its many guises, is one component of care proposed to contribute to the survival and recovery benefits of stroke unit care.1 This topical review provides an overview of the current evidence, research, and practice recommendations for early mobilization after stroke.

01 abril 2016

JOURNAL OF NEUROSURGERY. Reversal of intraoperative arterial thrombosis with a fibrinolytic agent when treating large and giant partially thrombosed aneurysms of the middle cerebral artery

Shalva Eliava, MD, PhD, Yury Pilipenko, MD, PhD, Oleg Shekhtman, MD, PhD, and Anton Konovalov, MD

OBJECT: Thrombosis of the cerebral arteries is one of the complications of microsurgical operations for partially thrombosed intracranial aneurysms. The object of this study was to assess the frequency of intraoperative arterial thrombosis (IAT) during microsurgical treatment of large and giant partially thrombosed aneurysms of the middle cerebral artery (MCA) and also to assess the efficacy of the treatment of this complication.

23 febrero 2016

JOURNAL OF THE AMERICAN HEART ASSOCIATION. Stroke. Thrombolytic Recanalization of Carotid Arteries Is Highly Dependent on Degree of Stenosis, Despite Sonothrombolysis

Amelia J. Tomkins, PhD1,3; Rebecca J. Hood, BBiomedSci(Hons)1,3; Debbie Pepperall, DipPathTech1,3; Christopher L. Null, BS5; Christopher R. Levi, MBBS, BMedSci, FRACP2,3,4; Neil J. Spratt, FRACP, PhD*,1,3,4

Background: Stroke associated with acute carotid occlusion is associated with poor effectiveness of tissue plasminogen activator (tPA) thrombolysis and poor prognosis. Rupture of atherosclerotic plaques resulting in vascular occlusions may occur on plaques, causing variable stenosis. We hypothesized that degree of stenosis may affect recanalization rates with tPA. Ultrasound+tPA (sonothrombolysis) has been shown to improve recanalization for intracranial occlusions but has not been tested for carotid occlusion. Our primary aim was to determine thrombolytic recanalization rates in a model of occlusion with variable stenosis, with a secondary aim to investigate sonothrombolysis in this model.

01 abril 2015

JACC: CARDIOVASCULAR INTERVENTIONS. Proximal Versus Distal Embolic Protection for Carotid Artery Stenting. A National Cardiovascular Data Registry Analysis

Jay Giri, MD, MPH∗; Sahil A. Parikh, MD†; Kevin F. Kennedy, MS‡; Ido Weinberg, MD§; Cameron Donaldson, MD§; Beau M. Hawkins, MD‖; Daniel J. McCormick, DO∗; Benjamin Jackson, MD¶; Ehrin J. Armstrong, MD, MSc#; Preethi Ramchand, MD∗∗; Christopher J. White, MD††; Michael R. Jaff, DO§; Kenneth Rosenfield, MD§; Robert W. Yeh, MD, MSc§

Objectives: The aim of this study was to compare the stroke/death rates between proximal embolic protection devices (P-EPDs) and distal filter embolic protection devices (F-EPDs) in elective carotid artery stenting (CAS).

01 marzo 2016

JACC: CARDIOVASCULAR INTERVENTIONS. Transcatheter Alcohol-Mediated Perivascular Renal Denervation With the Peregrine System. First-in-Human Experience

Tim A. Fischell, MDa,b; Adrian Ebner, MDc; Santiago Gallo, MDc; Fumiaki Ikeno, MDd; Laura Minarsch, RTe; Félix Vega, VMDf; Nicole Haratani, RN, BSNb; Vartan E. Ghazarossian, PhDb

Objectives: This study evaluated the first clinical use of a new endovascular approach to renal denervation, using chemical neurolysis, via periadventitial infusion of dehydrated alcohol (ethanol) to perform “perivascular” renal artery sympathetic denervation.

01 junio 2016

SPRINGER. Training guidelines for endovascular stroke intervention: an international multi-society consensus document

S. D. Lavine, K. Cockroft, B. Hoh, N. Bambakidis, A. A. Khalessi, H. Woo, H. Riina, A. Siddiqui, J. A. Hirsch, W. Chong, H. Rice, J. Wenderoth, P. Mitchell, A. Coulthard, T. J. Signh, C. Phatorous, M. Khangure, P. Klurfan, K. ter Brugge, D Iancu, T. Gunnarsson, O. Jansen, M. Muto, I. Szikora, L. Pierot, P. Brouwer, J. Gralla, S. Renowden, T. Andersson, J. Fiehler, F. Turjman, P. White, A. C. Januel, L. Spelle, Z. Kulcsar, R. Chapot, A. Biondi, S. Dima, C. Taschner, M. Szajner, A. Krajina, N. Sakai, Y. Matsumaru, S. Yoshimura, M. Ezura, T. Fujinaka, K. Iihara, A. Ishii, T. Higashi, M. Hirohata, A. Hyodo, Y. Ito, M. Kawanishi, H. Kiyosue, E. Kobayashi, S. Kobayashi, N. Kuwayama, Y. Matsumoto, S. Miyachi, Y. Murayama, I. Nagata, I. Nakahara, S. Nemoto, Y. Niimi, H. Oishi, J. Satomi, T. Satow, K. Sugiu, M. Tanaka, T. Terada, H. Yamagami, O. Diaz, P. Lylyk, M. V. Jayaraman, A. Patsalides, C. D. Gandhi, S. K. Lee, T. Abruzzo, B. Albani, S. A. Ansari, A. S. Arthur, B. W. Baxter, K. R. Bulsara, M. Chen, J. E. Delgado Almandoz, J. F. Fraser, D. V. Heck, S. W. Hetts, M. S. Hussain, R. P. Klucznik, T. M. Leslie-Mawzi, W. J. Mack, R. A. McTaggart, P. M. Meyers, J. Mocco, C. J. Prestigiacomo, G. L. Pride, P. A. Rasmussen, R. M. Starke, P. J. Sunenshine, R. W. Tarr, D. F. Frei, M. Ribo, R. G. Nogueira, O. O. Zaidat, T. Jovin, I. Linfante, D. Yavagal, D. Liebeskind, R. Novakovic, S. Pongpech, G. Rodesch, M. Soderman, A. Taylor, T. Krings, D. Orbach, L. Picard, D. C. Suh, H. Q. Zhang

Background: Ischemic stroke is a leading cause of death and disability worldwide. Much of the long-term disability occurs in patients with emergent large vessel occlusion (ELVO). In fact, in these patients, occlusion of a major intracerebral artery results in a large area of brain injury often resulting in death or severe disability [1]. Until recently, intravenous tissue plasminogen activator (t-PA) was the only proven treatment for ELVO.

01 enero 2016

EUROPEAN JOURNAL OF NEUROLOGY. Factors associated with recurrent stroke and recanalization in patients presenting with isolated symptomatic carotid occlusion

D. Damania1, N. T.-M. Kung1, M. Jain1, A. R. Jain1, J. A. Liew1, R. Mangla3, G. E. Koch1, B. Sahin2, A. S. Miranpuri1, T. M. Holmquist2, R. E. Replogle1, C. G. Benesch2, A. G. Kelly2 andB. S. Jahromi1,*

Background and purpose: Patients with symptomatic internal carotid artery (ICA) occlusion constitute a small proportion of stroke/transient ischaemic attack patients who are at increased risk of early stroke recurrence and poor outcome. The optimal medical treatment for patients with symptomatic ICA occlusion who are ineligible for thrombolysis or thrombectomy is unknown.

01 febrero 2015

JACC. Ischemic Brain Lesions After Carotid Artery Stenting Increase Future Cerebrovascular Risk

Henrik Gensicke, MD∗; H. Bart van der Worp, PhD†; Paul J. Nederkoorn, PhD‡; Sumaira Macdonald, PhD§; Peter A. Gaines, MBChB‖; Aad van der Lugt, MD¶; Willem P.Th.M. Mali, MD#; Philippe A. Lyrer, MD∗; Nils Peters, MD∗; Roland L. Featherstone, PhD∗∗; Gert J. de Borst, MD††; Stefan T. Engelter, MD∗; Martin M. Brown, MD∗∗; Leo H. Bonati, MD∗

Background: Brain lesions on diffusion-weighted imaging (DWI) are frequently found after carotid artery stenting (CAS), but their clinical relevance remains unclear.

01 febrero 2016

THE LANCET. Neurology. Clinical course of untreated cerebral cavernous malformations: a meta-analysis of individual patient data

Margaret A Horne, PhD, Kelly D Flemming, MD, I-Chang Su, MD, Prof Christian Stapf, MD, Jin Pyeong Jeon, MD, Da Li, MD, Susanne S Maxwell, MBChB, Prof Philip White, FRCR, Teresa J Christianson, BSc, Ronit Agid, MD, Won-Sang Cho, MD, Prof Chang Wan Oh, PhD, Prof Zhen Wu, PhD, Prof Jun-Ting Zhang, MD, Jeong Eun Kim, PhD, Prof Karel ter Brugge, MD, Robert Willinsky, FRCPC, Prof Robert D Brown Jr, MD, Prof Gordon D Murray, PhD, Prof Rustam Al-Shahi Salman, PhD the Cerebral Cavernous Malformations Individual Patient Data Meta-analysis Collaborators†

Background: Cerebral cavernous malformations (CCMs) can cause symptomatic intracranial haemorrhage (ICH), but the estimated risks are imprecise and predictors remain uncertain. We aimed to obtain precise estimates and predictors of the risk of ICH during untreated follow-up in an individual patient data meta-analysis.

01 octubre 2015

NEUROSURGERY. Perioperative Medical Management of Spine Surgery Patients With Osteoporosis

Lubelski, Daniel MD*,‡,§; Choma, Theodore J. MD¶; Steinmetz, Michael P. MD*,‡; Harrop, James S. MD‖; Mroz, Thomas E. MD*,‡

Abstract: Management of spine surgery patients with osteoporosis is challenging because of the difficulty of instrumenting and the potential complications, including nonunion and adjacent level fractures. Treatment of this patient population should involve a multidisciplinary approach including the spine surgeon, primary care physician, endocrinologist, and physical therapist. Indication for preoperative treatment before spinal fusion surgery is unclear. All patients should receive calcium and vitamin D. Hormone replacement therapy, including estrogen or selective estrogen receptor modulators, should be considered for elderly female patients with decreased bone mass. Bisphosphonates or intermittent parathyroid hormone are reserved for those with significant bone loss in the spine. Pretreatment with antiresorption medications affect bone remodeling, which is a vital part of graft incorporation and fusion. Although there have been numerous animal studies, there is limited clinical evidence. Accordingly, surgery should be delayed, if possible, to treat the osteoporosis before the intervention. Treatment may include bisphosphonates, as well as newer agents, such as recombinant parathyroid hormone. Further clinical data are needed to understand the relative advantages/disadvantage of antiresorptive vs anabolic agents, as well as the impact of administration of these medications before vs after fusion surgery. Future clinical studies will enable better understanding of the impact of current therapies on biomechanics and fusion outcomes in this unique and increasingly prevalent patient population.

29 diciembre 2015

STROKE. The National Institutes of Health StrokeNet. A User’s Guide

Joseph P. Broderick, MD; Yuko Y. Palesch, PhD; L. Scott Janis, PhD, for the National Institutes of Health StrokeNet Investigators

The National Institute of Neurological Disorders and Stroke (NINDS) established the National Institutes of Health (NIH) StrokeNet to facilitate the rapid initiation and efficient implementation of small and large multisite exploratory and confirmatory clinical trials focused on promising interventions for stroke prevention, treatment, and recovery, as well as validation studies of biomarkers or outcome measures.

Utilizamos cookies propias para el correcto funcionamiento del sitio web y mejorar nuestros servicios. Pulse el botón Aceptar todas para aceptar su uso. Puede cambiar la configuración u obtener más información en nuestra Política de cookies o pulsando Modificar configuración.