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ABSTRACT


09 septiembre 2014

STROKE. Clinical Sciences. Natural History and Outcome After Treatment of Unruptured Intradural Fusiform Aneurysms

Raphael H. Sacho, MD, FRCS(Eng); Guillaume Saliou, MD, PhD; Alex Kostynskyy, MBBS; Ravi Menezes, PhD; Michael Tymianski, MD, PhD; Timo Krings, MD, PhD; Ivan Radovanovic, MD, PhD; Karel Terbrugge, MD; Gabriel J.E. Rinkel, MD; Robert Willinsky, MD

Background and Purpose: Management of unruptured fusiform intracranial aneurysms is controversial because of the paucity of natural history data. We studied their natural history and outcome after treatment.

09 octubre 2014

STROKE. Clinical Sciences. Incidence and Risk Factors for Diffusion-Weighted Imaging (+) Lesions After Intracranial Stenting and Its Relationship With Symptomatic Ischemic Complications

Keun Young Park, MD; Byung Moon Kim, MD; Dong Joon Kim, MD; Dong Ik Kim, MD; Ji Hoe Heo, MD; Hyo Suk Nam, MD; Young Dae Kim, MD; Dongbeom Song, MD

Background and Purpose. Little is known about high-signal lesions in magnetic resonance diffusion-weighted imaging (DWI [+]) after stenting for intracranial atherosclerotic stenosis. This study aimed to evaluate the incidence, distribution, risk factors, and clinical implications of DWI (+) after intracranial stenting.

09 octubre 2014

STROKE. Clinical Sciences. Comparative Effectiveness of Carotid Revascularization Therapies

Robert J. McDonald, MD, PhD; Jennifer S. McDonald, PhD; Terry M. Therneau, PhD; Giuseppe Lanzino, MD; David F. Kallmes, MD; Harry J. Cloft, MD, PhD

Background and Purpose. Clinical equipoise of carotid revascularization therapies remains controversial. We sought to determine whether adverse outcomes after carotid endarterectomy (CEA) or carotid angioplasty and stenting (CAS) were similar using propensity score–matched analysis of retrospective data from a large hospital discharge database.

25 septiembre 2014

STROKE. Clinical Sciences. Complication Rates and Center Enrollment Volume in the Carotid Revascularization Endarterectomy Versus Stenting Trial

Nicole R. Gonzales, MD; Bart M. Demaerschalk, MD; Jenifer H. Voeks, PhD; MeeLee Tom, MS; George Howard, DrPH; Alice J. Sheffet, PhD; Lawrence Garcia, MD; Daniel G. Clair, MD; John Barr, MD; Steven Orlow, MD; Thomas G. Brott, MD; on behalf of the CREST Investigators

Background and Purpose: Evidence indicates that center volume of cases affects outcomes for both carotid endarterectomy and stenting. We evaluated the effect of enrollment volume by site on complication rates in the Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST).

11 septiembre 2014

STROKE. Clinical Sciences. Picking the Good Apples

George Howard, DrPH; Jenifer H. Voeks, PhD; James F. Meschia, MD; Virginia J. Howard, PhD; Thomas G. Brott, MD

Background and Purpose: The Carotid Revascularization Endarterectomy Versus Stenting Trial was completed with a low stroke and death rate. A lead-in series of patients receiving carotid artery stenting was used to select the physician-operators for the study, where performance was evaluated by complication rates and by peer review of cases. Herein, we assess the potential contribution of statistical evaluation of complication rates.

01 septiembre 2014

STROKE. Effects of Extracranial Carotid Stenosis on Intracranial Blood Flow

Sophia F. Shakur, MD; Tomas Hrbac, MD, PhD; Ali Alaraj, MD; Xinjian Du, MD; Victor A. Aletich, MD; Fady T. Charbel, MD; Sepideh Amin-Hanjani, MD

Background and Purpose: The hemodynamic effects of extracranial carotid stenosis on intracranial blood flow are not well characterized. We sought to determine the impact of degree of stenosis, stenosis length, and residual lumen on intracranial blood flow in patients with extracranial carotid stenosis.

21 octubre 2014

STROKE. Clinical Sciences. Mechanisms of Unexplained Neurological Deterioration After Intravenous Thrombolysis

Marie Tisserand, MD*; Pierre Seners, MSc*; Guillaume Turc, MD; Laurence Legrand, MD; Marc-Antoine Labeyrie, MD; Sylvain Charron, PhD; Jean-François Méder, PhD; Jean-Louis Mas, MD; Catherine Oppenheim, PhD†; Jean-Claude Baron, ScD†

Background and Purpose: Unstable clinical course characterizes the first 24 hours after thrombolysis for anterior circulation stroke, including early neurological deterioration (END), a secondary complication consistently predictive of poor outcome. Apart from straightforward causes, such as intracerebral hemorrhage and malignant edema, the mechanism of END remains unclear in the majority of cases (ENDunexplained). Based on the core/penumbra model, we tested the hypothesis that ENDunexplained is caused by infarct growth beyond the initial penumbra and assessed the associated vascular patterns.

07 octubre 2014

STROKE. Clinical Sciences. Application of Single-Stage Stereotactic Radiosurgery for Cerebral Arteriovenous Malformations >10 cm3

Shunya Hanakita, MD; Tomoyuki Koga, MD, PhD; Masahiro Shin, MD, PhD; Hiroshi Igaki, MD, PhD; Nobuhito Saito, MD, PhD

Background and Purpose: Stereotactic radiosurgery (SRS) is a safe and effective treatment for small arteriovenous malformations (AVMs), the use of this modality for the treatment of large AVMs is still controversial, although it has been used in difficult cases. The aim of this study was to evaluate the treatment outcomes of patients who underwent single-stage SRS for large AVMs and to discuss the role of SRS in the treatment of these challenging lesions.

28 octubre 2014

STROKE. Clinical Sciences. Time to Angiographic Reperfusion in Acute Ischemic Stroke

Achala S. Vagal, MD, MS; Pooja Khatri, MD, MSc; Joseph P. Broderick, MD; Thomas A. Tomsick, MD; Sharon D. Yeatts, PhD; Mark H. Eckman, MD, MS

Background and Purpose: Our objective was to use decision analytic modeling to compare 2 treatment strategies of intravenous recombinant tissue-type plasminogen activator (r-tPA) alone versus combined intravenous r-tPA/endovascular therapy in a subgroup of patients with large vessel (internal carotid artery terminus, M1, and M2) occlusion based on varying times to angiographic reperfusion and varying rates of reperfusion.

30 octubre 2014

STROKE. Clinical Sciences. Influence of Age on Clinical and Revascularization Outcomes in the North American Solitaire Stent-Retriever Acute Stroke Registry

Alicia C. Castonguay, PhD; Osama O. Zaidat, MD, MS; Roberta Novakovic, MD; Thanh N. Nguyen, MD; M. Asif Taqi, MD; Rishi Gupta, MD; Chung-Huan J. Sun, MD; Coleman Martin, MD; William E. Holloway, MD; Nils Mueller-Kronast, MD; Joey E. English, MD; Italo Linfante, MD; Guilherme Dabus, MD; Tim W. Malisch, MD; Franklin A. Marden, MD; Hormozd Bozorgchami, MD; Andrew Xavier, MD; Ansaar T. Rai, MD; Michael T. Froehler, MD, PhD; Aamir Badruddin, MD; Michael G. Abraham, MD; Vallabh Janardhan, MD; Hashem Shaltoni, MD; Albert J. Yoo, MD; Alex Abou-Chebl, MD; Peng R. Chen, MD; Gavin W. Britz, MD; Ritesh Kaushal, MD; Ashish Nanda, MD; Mohammad A. Issa, MD; Raul G. Nogueira, MD

Background and Purpose: The Solitaire With the Intention for Thrombectomy (SWIFT) and thrombectomy revascularization of large vessel occlusions in acute ischemic stroke (TREVO 2) trial results demonstrated improved recanalization rates with mechanical thrombectomy; however, outcomes in the elderly population remain poorly understood. Here, we report the effect of age on clinical and angiographic outcome within the North American Solitaire-FR Stent-Retriever Acute Stroke (NASA) Registry.

24 octubre 2014

THE LANCET NEUROLOGY. Effects of long-term blood pressure lowering and dual antiplatelet treatment on cognitive function in patients with recent lacunar stroke: a secondary analysis from the SPS3 randomised trial

Lesly A Pearce MS a, Leslie A McClure PhD b, Prof David C Anderson MD c, Claudia Jacova PhD d, Mukul Sharma MD e, Prof Robert G Hart MD e, Prof Oscar R Benavente MD f , for the SPS3 Investigators†

Background: The primary outcome results for the SPS3 trial suggested that a lower systolic target blood pressure (<130 mm Hg) might be beneficial for reducing the risk of recurrent stroke compared with a higher target (130—149 mm Hg), but that the addition of clopidogrel to aspirin was not beneficial compared with aspirin plus placebo. In this prespecified secondary outcome analysis of the SPS3 trial, we aimed to assess whether blood pressure reduction and dual antiplatelet treatment affect changes in cognitive function over time in patients with cerebral small vessel disease.

31 octubre 2014

THE LANCET NEUROLOGY. Effect of intermittent pneumatic compression on disability, living circumstances, quality of life, and hospital costs after stroke: secondary analyses from CLOTS 3, a randomised trial

CLOTS (Clots in Legs Or sTockings after Stroke) Trials Collaboration†

Background: The results of the CLOTS 3 trial showed that intermittent pneumatic compression (IPC) reduced the risk of deep vein thrombosis and improved survival in immobile patients with stroke. IPC is now being widely used in stroke units. Here we describe the disability, living circumstances, quality of life, and hospital costs of patients in CLOTS 3.

28 febrero 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Observer Variability of an Angiographic Grading Scale Used for the Assessment of Intracranial Aneurysms Treated with Flow-Diverting Stents

M.D. Joshi, C.J. O´Kelly, T. Krings, D. Fiorella and T.R. Marotta

BACKGROUND AND PURPOSE: Novel angiographic grading scales for the assessment of intracranial aneurysms treated with flow-diverting stents have been recently developed because previous angiographic grading scales cannot be applied to these aneurysms. The purpose of this study was to evaluate the inter- and intraobserver variability of the novel O´Kelly Marotta grading scale, which was developed specifically for the angiographic assessment of aneurysms treated with flow-diverting stents.

07 febrero 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Endovascular Management of Distal ACA Aneurysms: Single-Institution Clinical Experience in 22 Consecutive Patients and Literature Review

D.D. Cavalcanti, A.A. Abla, N.L. Martirosyan, C.G. McDougall, R.F. Spetzler and F.C. Albuquerque

BACKGROUND AND PURPOSE: Distal ACA aneurysms remain difficult to treat with endovascular therapy, but improved technology and experience allows for the treatment of some of these aneurysms with excellent results. The purpose of this study was to assess the status of endovascular treatment of distal ACA aneurysms by comparing our results with recent endovascular and microsurgical series of distal ACA aneurysms.

21 marzo 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Angioarchitecture of Transverse-Sigmoid Sinus Dural Arteriovenous Fistulas: Evaluation of Shunted Pouches by Multiplanar Reformatted Images of Rotational Angiography

H. Kiyosue, S. Tanoue, M. Okahara, Y. Hori, J. Kashiwagi, Y. Sagara, T. Kubo and H. Mori

BACKGROUND AND PURPOSE: Recognition of shunted pouches dural arteriovenous fistula allows us to treat the disease effectively by selective embolization of the pouches at first. However, the shunted pouches in transverse-sigmoid sinus dural arteriovenous fistulas have not been well-documented. Our aim was to evaluate the angioarchitecture of transverse-sigmoid sinus dural arteriovenous fistulas, including the frequency and location of shunted pouches and their feeding arteries.

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