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ABSTRACT


30 enero 2014

STROKE. Clinical Sciences. Prevalence and Outcomes of Symptomatic Intracranial Large Artery Stenoses and Occlusions in China. The Chinese Intracranial Atherosclerosis (CICAS) Study

Yongjun Wang, MD; Xingquan Zhao, MD; Liping Liu, MD; Yannie O.Y. Soo, MD; Yuehua Pu, MD; Yuesong Pan, MD; Yilong Wang, MD; Xinying Zou, MD; Thomas W.H. Leung, MD; Yefeng Cai, MD; Qingke Bai, MD; Yiping Wu, MD; Chunxue Wang, MD; Xiaoping Pan, MD; Benyan Luo, MD; Ka Sing Lawrence Wong, MD; for the CICAS Study Group

Background and Purpose: We aimed to establish the prevalence, characteristics, and outcomes of intracranial atherosclerosis (ICAS) in China by a large, prospective, multicenter study.

13 febrero 2014

STROKE. Clinical Sciences. Serial Alberta Stroke Program Early CT Score From Baseline to 24 Hours in Solitaire Flow Restoration With the Intention for Thrombectomy Study. A Novel Surrogate End Point for Revascularization in Acute Stroke

David S. Liebeskind, MD; Reza Jahan, MD; Raul G. Nogueira, MD; Tudor G. Jovin, MD; Helmi L. Lutsep, MD; Jeffrey L. Saver, MD for the SWIFT Investigators

Background and Purpose: The Alberta Stroke Program Early CT Score (ASPECTS) on baseline imaging is an established predictor of acute ischemic stroke outcomes. We analyzed change on serial ASPECTS at baseline and 24-hour imaging in the Solitaire Flow Restoration with the Intention for Thrombectomy (SWIFT) study to determine prognostic value and to identify subgroups with extensive injury after intervention.

28 enero 2014

STROKE. Clinical Sciences. Collaterals at Angiography and Outcomes in the Interventional Management of Stroke (IMS) III Trial

David S. Liebeskind, MD; Thomas A. Tomsick, MD; Lydia D. Foster, MS; Sharon D. Yeatts, PhD; Janice Carrozzella, MSN, NP, RT(R); Andrew M. Demchuk, MD; Tudor G. Jovin, MD; Pooja Khatri, MD; Ruediger von Kummer, MD; Rebecca M. Sugg, MD; Osama O. Zaidat, MD; Syed I. Hussain, MD; Mayank Goyal, MD; Bijoy K. Menon, MD; Firas Al Ali, MD; Bernard Yan, MD; Yuko Y. Palesch, PhD; Joseph P. Broderick, MD for the IMS III Investigators

Background and Purpose: Endovascular strategies provide unique opportunity to correlate angiographic measures of collateral circulation at the time of endovascular therapy. We conducted systematic analyses of collaterals at conventional angiography on recanalization, reperfusion, and clinical outcomes in the endovascular treatment arm of the Interventional Management of Stroke (IMS) III trial.

25 marzo 2014

STROKE. Clinical Sciences. North American SOLITAIRE Stent-Retriever Acute Stroke Registry. Choice of Anesthesia and Outcomes

Alex Abou-Chebl, MD; Ossama O. Zaidat, MD, MS; Alicia C. Castonguay, PhD; Rishi Gupta, MD; Chung-Huan J. Sun, MD; Coleman O. Martin, MD; William E. Holloway, MD; Nils Mueller-Kronast, MD; Joey D. English, MD; Italo Linfante, MD; Guilherme Dabus, MD; Timothy W. Malisch, MD; Franklin A. Marden, MD; Hormozd Bozorgchami, MD; Andrew Xavier, MD; Ansaar T. Rai, MD; Micahel T. Froehler, MD, PhD; Aamir Badruddin, MD; Thanh N. Nguyen, MD, FRCPC; Muhammad Taqi, MD; Michael G. Abraham, MD; Vallabh Janardhan, MD; Hashem Shaltoni, MD; Roberta Novakovic, MD; Albert J. Yoo, 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: Previous work that predated the availability of the safer stent-retriever devices has suggested that general anesthesia (GA) may have a negative impact on outcomes in patients with acute ischemic stroke undergoing endovascular therapy.

03 abril 2014

STROKE. Clinical Sciences. Challenges of Decision Making Regarding Futility in a Randomized Trial. The Interventional Management of Stroke III Experience

Sharon D. Yeatts, PhD; Renee H. Martin, PhD; Christopher S. Coffey, PhD; Patrick D. Lyden, MD; Lydia D. Foster, MS; Robert F. Woolson, PhD; Joseph P. Broderick, MD; Marco R. Di Tullio, MD; Charles A. Jungreis, MD; Yuko Y. Palesch, PhD; for the IMS III Investigators

Background and Purpose: Interventional Management of Stroke (IMS) III is a randomized, parallel arm trial comparing the approach of intravenous tissue-type plasminogen activator followed by endovascular treatment with intravenous tissue-type plasminogen activator alone in patients with acute ischemic stroke presenting <3 hours of symptom onset. The trial intended to enroll 900 subjects to ensure adequate statistical power to detect an absolute 10% difference in the percentage of subjects with good outcome, defined as modified Rankin Scale score of 0 to 2 at 3 months. In April 2012, after 656 subjects were randomized, further enrollment was terminated by the National Institute of Neurological Disorders and Stroke based on the prespecified criterion for futility using conditional power <20%.

07 marzo 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. Natural Course of Dissecting Vertebrobasilar Artery Aneurysms without Stroke

N. Kobayashi, Y. Murayama, I. Yuki, T. Ishibashi, M. Ebara, H. Arakawa, K. Irie, H. Takao, I. Kajiwara, K. Nishimura, K. Karagiozov and M. Urashima

Background and Purpose: The natural history and therapeutic management of dissecting vertebrobasilar aneurysms without ischemic or hemorrhagic stroke (nonstroke dissecting vertebrobasilar aneurysms) are not well-established. We conservatively followed patients with nonstroke dissecting vertebrobasilar aneurysms and evaluated the factors related to clinical and morphologic deterioration.

24 octubre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Neurointerventions in Children: Radiation Exposure and Its Import

D.B. Orbach, C. Stamoulis, K.J. Strauss, J. Manchester, E.R. Smith, R.M. Scott and N. Lin

Background and Purpose: Neurointerventions in children have dramatically improved the clinical outlook for patients with previously intractable cerebrovascular conditions, such as vein of Galen malformations and complex arteriovenous fistulas. However, these complex and sometimes lengthy procedures are performed under fluoroscopic guidance and thus unavoidably expose vulnerable pediatric patients to the effects of ionizing radiation. Recent epidemiologic evidence from a national registry of children who underwent CT scans suggests a higher-than-expected incidence of secondary tumors. We sought to calculate the predicted risk of secondary tumors in a large cohort of pediatric neurointerventional patients.

30 enero 2014

AMERICAN JOURNAL OF NEURORADIOLOGY. The Impact of Arterial Collateralization on Outcome after Intra-Arterial Therapy for Acute Ischemic Stroke

S. Seeta Ramaiah, L. Churilov, P. Mitchell, R. Dowling and B. Yan

Background and Purpose: Although intra-arterial therapy for acute ischemic stroke is associated with superior recanalization rates, improved clinical outcomes are inconsistently observed following successful recanalization. There is emerging concern that unfavorable arterial collateralization, though unproven, predetermines poor outcome. We hypothesized that poor leptomeningeal collateralization, assessed by preprocedural CTA, is associated with poor outcome in patients with acute ischemic stroke undergoing intra-arterial therapy.

07 noviembre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Endovascular Treatment of Middle Cerebral Artery Aneurysms for 120 Nonselected Patients: A Prospective Cohort Study

B. Gory, A. Rouchaud, S. Saleme, F. Dalmay, R. Riva, F. Caire and C. Mounayer

Background and Purpose: Multiple technologies have developed the endovascular approach to MCA aneurysms. We assess the safety and the efficacy of a systematic endovascular approach in nonselected patients with MCA aneurysms and determine predictors of treatment outcomes.

26 septiembre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Variable Porosity of the Pipeline Embolization Device in Straight and Curved Vessels: A Guide for Optimal Deployment Strategy

M. Shapiro, E. Raz, T. Becske and P.K. Nelson

Background and Purpose: Low-porosity endoluminal devices for the treatment of intracranial aneurysms, also known as flow diverters, have been in experimental and clinical use for close to 10 years. Despite rigorous evidence of their safety and efficacy in well-controlled trials, a number of key factors concerning their use remain poorly defined. Among these, none has received more attention to date than the debate on how many devices are optimally required to achieve a safe, effective, and economical outcome. Additional, related questions concern device sizing relative to the parent artery and optimal method of deployment of the devices. While some or all of these issues may be ultimately answered on an empiric basis via subgroup analysis of growing treatment cohorts, we believe that careful in vitro examination of relevant device properties can also help guide its in vivo use.

24 octubre 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Stent Retrievers in Acute Ischemic Stroke: Complications and Failures during the Perioperative Period

G. Gascou, K. Lobotesis, P. Machi, I. Maldonado, J.F. Vendrell, C. Riquelme, O. Eker, G. Mercier, I. Mourand, C. Arquizan, A. Bonafé and V. Costalat

Background and Purpose: Stent retriever–assisted thrombectomy promotes high recanalization rates in acute ischemic stroke. Nevertheless, complications and failures occur in more than 10% of procedures; hence, there is a need for further investigation.

01 abril 2013

SPRINGER. Multiple antiplatelet therapy contributes to the reversible high signal spots on diffusion-weighted imaging in elective coiling of unruptured cerebral aneurysm

Toshinori Matsushige, Yoshihiro Kiura, Shigeyuki Sakamoto, Takahito Okazaki, Katsuhiro Shinagawa, Nobuhiko Ichinose, Miyuki Takasu, Yuji Akiyama, Kazuhiko Sugiyama, Kaoru Kurisu

Introduction: Our aim was to systematically investigate radiographic characteristics and outcome of diffusion-weighted imaging (DWI) changes in the elective coiling of unruptured cerebral aneurysm with analyzing the correlation of antiplatelet therapy (APT).

01 abril 2013

SPRINGER. Endovascular treatment of ruptured blister-like aneurysms with special reference to the flow-diverting strategy

Celal Çinar, İsmail Oran, Halil Bozkaya, Erkin Ozgiray

Introduction: The current literature describing surgical and endovascular interventions in blister-like aneurysms (BAs) offers no clear consensus on the optimal treatment modality. The aim of this study was to assess the clinical and angiographic features of ruptured BAs treated endovascularly using predominantly flow-diversion strategy.

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