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      International Survey on the Management of Wake-Up Stroke

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          Abstract

          Background: Patients who wake up having experienced a stroke while asleep represent around 20% of acute stroke admissions. According to international guidelines for the management of acute stroke, patients presenting with wake-up stroke are not currently eligible to receive revascularization treatments. In this study, we aimed to assess the opinions of stroke experts about the management of patients with wake-up stroke by using an international multicenter electronic survey. Method: This study consisted of 8 questions on wake-up stroke treatment. Results: Two hundred invitations to participate in the survey were sent by e-mail. Fifty-nine participants started the survey, 4 dropped out before completing it, and 55 completed the full questionnaire. We had 55 participants from 22 countries. Conclusions: In this study, most stroke experts recommended a recanalization treatment for wake-up stroke. However, there was considerable disagreement among experts regarding the best brain imaging method and the best recanalization treatment. The results of ongoing randomized trials on wake-up stroke are urgently needed.

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          Most cited references7

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          Population-based study of wake-up strokes.

          Previous studies have estimated that wake-up strokes comprise 8%to 28% of all ischemic strokes, but these studies were either small or not population-based. We sought to establish the proportion and event rate of wake-up strokes in a large population-based study and to compare patients who awoke with stroke symptoms with those who were awake at time of onset. First-time and recurrent ischemic strokes among residents of the Greater Cincinnati/Northern Kentucky region (population 1.3 million) in 2005 were identified using International Classification of Diseases-9 codes 430-436 and verified via study physician review. Ischemic strokes in patients aged 18 years and older presenting to an emergency department were included. Baseline characteristics were ascertained, along with discharge modified Rankin Scale scores and 90-day mortality. We identified 1,854 ischemic strokes presenting to an emergency department, of which 273 (14.3%) were wake-up strokes. There were no differences between wake-up strokes and all other strokes with regard to clinical features or outcomes except for minor differences in age and baseline retrospective NIH Stroke Scale score. The adjusted wake-up stroke event rate was 26.0/100,000. Of the wake-up strokes, at least 98 (35.9%) would have been eligible for thrombolysis if arrival time were not a factor. Within our population, approximately 14% of ischemic strokes presenting to an emergency department were wake-up strokes. Wake-up strokes cannot be distinguished from other strokes by clinical features or outcome. We estimate that approximately 58,000 patients with wake-up strokes presented to an emergency department in the United States in 2005.
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            Presentation and outcomes of "wake-up strokes" in a large randomized stroke trial: analysis of data from the International Stroke Trial.

            Recent studies comparing the outcomes of wake-up stroke (WUS) and stroke while awake (SWA) patients reveal better outcomes among SWA patients, attributable in part to their higher rates of thrombolysis. Patients with WUS are largely excluded from therapy. Earlier analyses, conducted before the approval of alteplase for acute stroke, show the true divergence of natural histories between these 2 groups. We analyzed 17,398 patients with ischemic stroke from the International Stroke Trial and compared both presentations and outcomes between the WUS and SWA groups. Severity was assessed by level of consciousness, Oxfordshire Community Stroke Project (OCSP) stroke classification, number of neurologic deficits, and predicted probability of dependency or death. Outcomes were assessed at day 14 and at 6 months. Outcome assessments were controlled for potential confounders. WUS represented 29.6% of all ischemic strokes. More severe OSCP stroke type (total anterior circulation syndrome) was less common in WUS. Although more patients with WUS were alert at presentation with a lower predicted probability of dependency, the 14-day mortality rates and rates of poor outcome at 6 months were similar between the 2 groups. WUS patients comprise one quarter to one third of ischemic stroke patients. Despite their more benign presentations, they deteriorate to outcome rates similar to SWA. Although they are typically excluded from time-dependent acute interventions, patients with WUS may benefit from acute intervention to prevent this worsening natural history. Copyright © 2013 National Stroke Association. Published by Elsevier Inc. All rights reserved.
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              Comparison of the European and Japanese Guidelines for the Management of Ischemic Stroke

              Background: Different aspects of acute stroke management and strategies for stroke prevention derive from two viewpoints: specific traditional and historical backgrounds and evidence-based medicine from modern randomized controlled trials (RCTs), meta-analysis and authorized clinical practice guidelines (GLs). Regarding stroke, GLs have been published by national and international organizations in different languages, most frequently in English. Cerebrovascular Diseases published the European GLs for the management of ischemic stroke and transient ischemic attacks in 2003, with an update in 2008. At about the same time (in 2004), the first Japanese GLs for the management of stroke appeared in Japanese. The first English version of the updated Japanese GLs was published only in 2011 and included differently approved drugs and drug dosages as compared with other American or European countries. Methods: Since 2011, the authors have met repeatedly and have compared the latest versions of published European and Japanese GLs for ischemic and hemorrhagic strokes. Many aspects have only been addressed in one but left out in the other GLs, which consequently founded the basis for the comparison. Classification of evidence levels and recommendation grades defined by the individual committees differed between both original GLs. Results: Aspects of major importance were surprisingly similar and hence did not need extensive interpretation. Other aspects of ischemic stroke management differed significantly, e.g. the dosage of recombinant tissue plasminogen activator approved in Japan is lower (0.6 mg/kg) than in Europe (0.9 mg/kg), which derived from different practices in cardiovascular treatment prior to the design of acute ischemic stroke RCTs. Furthermore, comedication with neuroprotective agents (edaravone), intravenous anticoagulants (argatroban) or antiplatelet agents within 1-2 days after stroke onset is recommended in Japan but not in Europe. For cardioembolic stroke prevention, a major difference consists in a higher international normalized ratio target (2.0-3.0) in younger subjects versus in those >70 years (1.6-2.6), without age restrictions in Europe. Conclusion: This brief survey - when compared with the lengthy original recommendations - provides a stimulating basis for an extended interest among Japanese and European stroke clinicians to learn from their individual experiences and to strengthen efforts for joint cooperation in treating and preventing stroke all around the globe.
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                Author and article information

                Journal
                CEE
                CEE
                Cerebrovasc Dis Extra
                10.1159/issn.1664-5456
                Cerebrovascular Diseases Extra
                S. Karger AG
                1664-5456
                2016
                January – April 2016
                31 March 2016
                : 6
                : 1
                : 22-26
                Affiliations
                aDivision of Interventional Neuroradiology, bDepartment of Neurology, and cDivision of Diagnostic Neuroradiology, Medical School of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
                Author notes
                *Luís Henrique de Castro-Afonso, MD, PhD, Division of Interventional Neuroradiology, Medical School of Ribeirão Preto, University of São Paulo, Avenida Bandeirantes, 3900, Monte Alegre, Ribeirão Preto, SP 14048-090 (Brazil), E-Mail castroafonsolh@usp.br
                Article
                444765 PMC4836135 Cerebrovasc Dis Extra 2016;6:22-26
                10.1159/000444765
                PMC4836135
                27099612
                6759720c-f631-4696-a13a-8d494236328e
                © 2016 The Author(s) Published by S. Karger AG, Basel

                This article is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND). Usage and distribution for commercial purposes as well as any distribution of modified material requires written permission. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                : 06 October 2015
                : 16 February 2016
                Page count
                Tables: 2, References: 10, Pages: 5
                Categories
                Original Paper

                Geriatric medicine,Neurology,Cardiovascular Medicine,Neurosciences,Clinical Psychology & Psychiatry,Public health
                Brain imaging,Wake-up stroke,Intra-arterial thrombolysis,Mechanical thrombectomy,Endovascular treatment,Intravenous thrombolysis

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