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ABSTRACT


12 diciembre 2013

STROKE. Alberta Stroke Program Early Computed Tomography Score to Select Patients for Endovascular Treatment. Interventional Management of Stroke (IMS)-III Trial

Michael D. Hill, MD, FRCPC; Andrew M. Demchuk, MD, FRCPC; Mayank Goyal, MD, FRCPC; Tudor G. Jovin, MD; Lydia D. Foster, MSc; Thomas A. Tomsick, MD; Rüdiger von Kummer, MD; Sharon D. Yeatts, PhD; Yuko Y. Palesch, PhD; Joseph P. Broderick, MD for the IMS3 Investigators

Background and Purpose: The Interventional Management of Stroke (IMS)-III trial randomized patients with acute ischemic stroke to intravenous tissue-type plasminogen activator (tPA) plus endovascular therapy versus intravenous tPA therapy alone within 3 hours from symptom onset. A predefined secondary hypothesis was that subjects with significant early ischemic change on the baseline scan would not respond to endovascular therapy.

05 noviembre 2013

STROKE. Stroke Treatment Academic Industry Roundtable. Research Priorities in the Assessment of Neurothrombectomy Devices

Jeffrey L. Saver, MD; Tudor G. Jovin, MD; Wade S. Smith, MD; Gregory W. Albers, MD for the STAIR VIII Consortium

Background and Purpose: The goal of the Stroke Treatment Academic Industry Roundtable (STAIR) meetings is to advance the development of stroke therapies. At STAIR VIII, consensus recommendations were developed for clinical trial strategies to demonstrate the benefit of endovascular reperfusion therapies for acute ischemic stroke.

10 septiembre 2013

STROKE. Switching Strategy for Mechanical Thrombectomy of Acute Large Vessel Occlusion in the Anterior Circulation

Dong-Hun Kang, MD; Yong-Won Kim, MD; Yang-Ha Hwang, MD; Jaechan Park, MD; Jeong-Hyun Hwang, MD; Yong-Sun Kim, MD

Background and Purpose: We introduce the concept of a switching strategy for mechanical thrombectomy with period-to-period analysis. In period 1, forced arterial suction thrombectomy with a Penumbra reperfusion catheter was performed, even in difficult cases; in period 2, forced arterial suction thrombectomy was initially performed, with switching to Solitaire in difficult cases.

17 octubre 2013

STROKE. Intracranial Stent Placement for Symptomatic Intracranial Stenosis as Part of a Clinical Trial Versus Outside a Clinical Trial

Farhan Siddiq, MD; Malik M. Adil, MD; Kiersten Norby, MD; Adnan I. Qureshi, MD

Background and Purpose: A high rate of postprocedure complications in the Stenting versus Aggressive Medical Therapy for Intracranial Arterial Stenosis (SAMMPRIS) trial has raised concerns whether such results are representative of intracranial stent placement in actual routine practice.

21 noviembre 2013

STROKE. Clinical Sciences. Outcome of Standard and High-Risk Patients With Acute Anterior Circulation Stroke After Stent Retriever Thrombectomy

Pascal P. Gratz, MD*; Simon Jung, MD*; Gerhard Schroth, MD; Jan Gralla, MD; Pasquale Mordasini, MD; Kety Hsieh, MD; Mirjam R. Heldner, MD; Heinrich P. Mattle, MD; Marie-Luise Mono, MD; Urs Fischer, MD; Marcel Arnold, MD*; Christoph Zubler, MD*

Background and Purpose: Stent retrievers have become an important tool for the treatment of acute ischemic stroke. The aim of this study was to analyze outcome and complications in a large cohort of patients with stroke treated with the Solitaire stent retriever. The study also included patients who did not meet standard inclusion criteria for endovascular treatment: low or high baseline National Institutes of Health Stroke Scale score, ≥80 years of age, extensive ischemic signs in middle cerebral artery territory, and time from symptom onset to endovascular intervention >8 hours.

07 noviembre 2013

STROKE. Clinical Sciences. Therapeutic Hypothermia After Recanalization in Patients With Acute Ischemic Stroke

Ji Man Hong, MD, PhD; Jin Soo Lee, MD, PhD; Hee-Jung Song, MD; Hye Seon Jeong, MD; Huimahn Alex Choi, MD; Kiwon Lee, MD

Background and Purpose: Therapeutic hypothermia improves outcomes in experimental stroke models, especially after ischemia-reperfusion injury. We investigated the clinical and radiological effects of therapeutic hypothermia in acute ischemic stroke patients after recanalization.

03 diciembre 2013

STROKE. Clinical Sciences. Balloon Guide Catheter Improves Revascularization and Clinical Outcomes With the Solitaire Device. Analysis of the North American Solitaire Acute Stroke Registry

Thanh N. Nguyen, MD, FRCPC; Timothy Malisch, MD; 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, PhD; Italo Linfante, MD; Guilherme Dabus, MD; Franklin A. Marden, MD; Hormozd Bozorgchami, MD; Andrew Xavier, MD; Ansaar T. Rai, MD; Michael T. Froehler, MD, PhD; Aamir Badruddin, MD; Muhammad Taqi, MD; Michael G. Abraham, MD; Vallabh Janardhan, MD; Hashem Shaltoni, MD; Roberta Novakovic, 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; Hesham Masoud, MD; Raul G. Nogueira, MD; Alexander M. Norbash, MD; Osama O. Zaidat, MD, MS

Background and Purpose: Efficient and timely recanalization is an important goal in acute stroke endovascular therapy. Several studies demonstrated improved recanalization and clinical outcomes with the stent retriever devices compared with the Merci device. The goal of this study was to evaluate the role of the balloon guide catheter (BGC) and recanalization success in a substudy of the North American Solitaire Acute Stroke (NASA) registry.

19 noviembre 2013

STROKE. Clinical Sciences. Extending the Indications of Flow Diversion to Small, Unruptured, Saccular Aneurysms of the Anterior Circulation

Nohra Chalouhi, MD; Robert M. Starke, MD; Steven Yang, BS; Cory D. Bovenzi, BS; Stavropoula Tjoumakaris, MD; David Hasan, MD; L. Fernando Gonzalez, MD; Robert Rosenwasser, MD; Pascal Jabbour, MD

Background and Purpose: Flow diverters are currently indicated for treatment of large and complex intracranial aneurysms. The purpose of this study was to determine whether the indications of flow diversion can be safely extended to unruptured, small, saccular aneurysms (<10 mm) of the anterior circulation.

25 julio 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Angioarchitectural Characteristics Associated with Complications of Embolization in Supratentorial Brain Arteriovenous Malformation

J. Pan, H. He, L. Feng, F. Viñuela, Z. Wu and R. Zhan

Background and Purpose: Embolization is an important therapeutic technique in brain arteriovenous malformations; however, little has been reported on the factors contributing to complications. We retrospectively reviewed a large series of supratentorial brain AVMs to identify the angioarchitectural characteristics that might be associated with the complications of embolization and poor clinical outcomes.

18 julio 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Differences in the Angiographic Evaluation of Coiled Cerebral Aneurysms between a Core Laboratory Reader and Operators: Results of the Cerecyte Coil Trial

I. Rezek, R.K. Lingineni, M. Sneade, A.J. Molyneux, A.J. Fox and D.F. Kallmes

Background and Purpose: Independent evaluation of angiographic images is becoming widely applied in the assessment of treatment outcomes of cerebral aneurysms. In the current study, we assessed the agreement between an independent core laboratory and the operators regarding angiographic appearance in a recent randomized, controlled trial.

01 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. Hyperattenuated Intracerebral Lesions after Mechanical Recanalization in Acute Stroke

N. Lummel, G. Schulte-Altedorneburg, C. Bernau, T. Pfefferkorn, M. Patzig, H. Janssen, C. Opherk, H. Brückmann and J. Linn

Background and Purpose: Following mechanical recanalization of an acute intracranial vessel occlusion, hyperattenuated lesions are frequently found on postinterventional cranial CT. They represent either blood or—more frequently—enhancement of contrast agent. Here, we aimed to evaluate the prognostic value of these hyperattenuated intracerebral lesions.

08 agosto 2013

AMERICAN JOURNAL OF NEURORADIOLOGY. When Is Carotid Angioplasty and Stenting the Cost-Effective Alternative for Revascularization of Symptomatic Carotid Stenosis? A Canadian Health System Perspective

M.A. Almekhlafi, M.D. Hill, S. Wiebe, M. Goyal, D. Yavin, J.H. Wong and F.M. Clement

Background and Purpose: Carotid revascularization procedures can be complicated by stroke. Additional disability adds to the already high costs of the procedure. To weigh the cost and benefit, we estimated the cost-utility of carotid angioplasty and stenting compared with carotid endarterectomy among patients with symptomatic carotid stenosis, with special emphasis on scenario analyses that would yield carotid angioplasty and stenting as the cost-effective alternative relative to carotid endarterectomy.

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