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ESTUDIOS


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.

18 noviembre 2014

STROKE. Clinical Sciences. Intraluminal Thrombus, Intraplaque Hemorrhage, Plaque Thickness, and Current Smoking Optimally Predict Carotid Stroke

J. Scott McNally, MD, PhD; Michael S. McLaughlin, MD; Peter J. Hinckley, BS; Scott M. Treiman; Gregory J. Stoddard, MBA, MPH, PhD; Dennis L. Parker, PhD; Gerald S. Treiman, MD

Background and Purpose: Intraplaque hemorrhage (IPH) is associated with acute and future stroke. IPH is also associated with lumen markers of stroke risk including stenosis, plaque thickness, and ulceration. Whether IPH adds further predictive value to these other variables is unknown. The purpose of this study was to determine whether IPH improves carotid-source stroke prediction.

06 noviembre 2014

STROKE. Brief Report. Cerebral Venous Thrombosis in the Absence of Headache

Jonathan M. Coutinho, MD, PhD; Jan Stam, MD, PhD; Patricia Canhão, MD, PhD; Fernando Barinagarrementeria, MD; Marie-Germaine Bousser, MD, PhD; José M. Ferro, MD, PhD; on behalf of the ISCVT Investigators

Background and Purpose: Although headache is the most common symptom in cerebral venous thrombosis, 5% to 30% of patients do not report headache at baseline. Characteristics of these patients have not been investigated.

13 enero 2015

STROKE. Clinical Sciences. Influence of Intracerebral Hemorrhage Location on Incidence, Characteristics, and Outcome

Neshika Samarasekera, MRCP; Arthur Fonville†; Christine Lerpiniere, RGN; Andrew J. Farrall, MD; Joanna M. Wardlaw, MD; Philip M. White, MD; Colin Smith, MD; Rustam Al-Shahi Salman, PhD; for the Lothian Audit of the Treatment of Cerebral Haemorrhage Collaborators

Background and Purpose: The characteristics of intracerebral hemorrhage (ICH) may vary by ICH location because of differences in the distribution of underlying cerebral small vessel diseases. Therefore, we investigated the incidence, characteristics, and outcome of lobar and nonlobar ICH.

08 enero 2015

STROKE. Clinical Sciences. Is Prophylactic Anticoagulation for Deep Venous Thrombosis Common Practice After Intracerebral Hemorrhage?

Shyam Prabhakaran, MD, MS; Patricia Herbers, MS; Jane Khoury, PhD; Opeolu Adeoye, MD; Pooja Khatri, MD; Simona Ferioli, MD; Dawn O. Kleindorfer, MD

Background and Purpose: Prophylactic anticoagulation for deep venous thrombosis prevention after intracerebral hemorrhage (ICH) is safe. Current guidelines recommend prophylactic anticoagulation after cessation of hematoma growth. We aimed to evaluate nationwide trends in deep venous thrombosis prophylaxis after ICH.

06 enero 2015

STROKE. Brief Report. Plaque Components in Symptomatic Moderately Stenosed Carotid Arteries Related to Cerebral Infarcts. The Plaque At RISK Study

Alexandra A.J. de Rotte, MD; Martine T.B. Truijman, MD; Anouk C. van Dijk, MD; Madieke I. Liem, MD; Floris H.B.M. Schreuder, MD; Anja G. van der Kolk, MD, PhD; Jelle R. de Kruijk, MD, PhD; Matt J.A.P. Daemen, MD, PhD; Anton F.W. van der Steen, PhD; Gert Jan de Borst, MD, PhD; Peter R. Luijten, PhD; Paul J. Nederkoorn, MD, PhD; Marianne Eline Kooi, PhD; Aad van der Lugt, MD, PhD; Jeroen Hendrikse, MD, PhD

Background and Purpose: Carotid plaque composition is a major determinant of cerebrovascular events. In the present analysis, we evaluated the relationship between intraplaque hemorrhage (IPH) and a thin/ruptured fibrous cap (TRFC) in moderately stenosed carotid arteries and cerebral infarcts on MRI in the ipsilateral hemisphere.

23 diciembre 2014

STROKE. Brief Report. Comparing National Institutes of Health Stroke Scale Among a Stroke Team and Helicopter Emergency Medical Service Providers

Matthew R. Kesinger, BA; Denisse J. Sequeira, BA; Samantha Buffalini, RN(c); Francis X. Guyette, MD, MPH

Background and Purpose: The use of tissue-type plasminogen activator is limited to a maximum of 4.5 hours after symptom-onset. Endovascular recanalization may improve outcomes for large-vessel occlusions (LVO), but efficacy decreases with time from symptom-onset. A National Institutes of Health Stroke Scale (NIHSS) score ≥12 is predictive of LVOs and could be used to triage patients if appropriately used by prehospital providers. The NIHSS has been considered too complex and has not been validated in the prehospital setting.

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