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Remote Ischemic Perconditioning as an Adjunct Therapy to Thrombolysis in Patients With Acute Ischemic Stroke: A Randomized Trial Clinical Sciences
Conclusions— Although the overall results were neutral, a tissue survival analysis suggests that prehospital rPerC may have immediate neuroprotective effects. Future clinical trials should take such immediate effects, and their duration, into account. Clinical Trial Registration— URL: http://www.clinicaltrials.gov. Unique identifier: NCT00975962.
Source: Stroke - December 23, 2013 Category: Neurology Authors: Hougaard, K. D., Hjort, N., Zeidler, D., Sorensen, L., Norgaard, A., Hansen, T. M., von Weitzel-Mudersbach, P., Simonsen, C. Z., Damgaard, D., Gottrup, H., Svendsen, K., Rasmussen, P. V., Ribe, L. R., Mikkelsen, I. K., Nagenthiraja, K., Cho, T.-H., Reding Tags: Emergency treatment of Stroke, Computerized tomography and Magnetic Resonance Imaging, Neuroprotectors, Thrombolysis Clinical Sciences Source Type: research

Protocol for the perfusion and angiography imaging sub‐study of the Third International Stroke Trial (IST‐3) of alteplase treatment within six‐hours of acute ischemic stroke
RationaleIntravenous thrombolysis with recombinant tissue Plasminogen Activator improves outcomes in patients treated early after stroke but at the risk of causing intracranial hemorrhage. Restricting recombinant tissue Plasminogen Activator use to patients with evidence of still salvageable tissue, or with definite arterial occlusion, might help reduce risk, increase benefit and identify patients for treatment at late time windows. AimsTo determine if perfusion or angiographic imaging with computed tomography or magnetic resonance help identify patients who are more likely to benefit from recombinant tissue Plasminogen Ac...
Source: International Journal of Stroke - January 22, 2013 Category: Neurology Authors: Joanna M. Wardlaw, Rudiger Kummer, Trevor Carpenter, Mark Parsons, Richard I. Lindley, Geoff Cohen, Veronica Murray, Adam Kobayashi, Andre Peeters, Francesca Chappell, Peter A. G. Sandercock Tags: Protocols Source Type: research

Alteplase Reduces Downstream Microvascular Thrombosis and Improves the Benefit of Large Artery Recanalization in Stroke Basic Sciences
Conclusions— Our data demonstrate that DMT is an early phenomenon initiated before recanalization. We further show that alteplase-dependent maintenance of downstream perfusion during MCAO improves acute ischemic stroke outcome through a fibrinogen-dependent platelet aggregation reduction. Our results indicate that early targeting of DMT represents a therapeutic strategy to improve the benefit of large artery recanalization in acute ischemic stroke.
Source: Stroke - October 26, 2015 Category: Neurology Authors: Desilles, J.-P., Loyau, S., Syvannarath, V., Gonzalez-Valcarcel, J., Cantier, M., Louedec, L., Lapergue, B., Amarenco, P., Ajzenberg, N., Jandrot-Perrus, M., Michel, J.-B., Ho-Tin-Noe, B., Mazighi, M. Tags: Fibrinolysis, Fibrinogen/fibrin, Acute Cerebral Infarction, Brain Circulation and Metabolism, Thrombolysis Basic Sciences Source Type: research

Influence of Penumbral Reperfusion on Clinical Outcome Depends on Baseline Ischemic Core Volume Clinical Sciences
This study included 1507 patients. Reperfused penumbral volume had moderate ability to predict 90-day mRS 0 to 1 (area under the curve, 0.77; R2, 0.28; P
Source: Stroke - September 25, 2017 Category: Neurology Authors: Chushuang Chen, Mark W. Parsons, Matthew Clapham, Christopher Oldmeadow, Christopher R. Levi, Longting Lin, Xin Cheng, Min Lou, Timothy J. Kleinig, Kenneth S. Butcher, Qiang Dong, Andrew Bivard Tags: Ischemic Stroke Original Contributions Source Type: research

Use of Noncontrast Computed Tomography and Computed Tomographic Perfusion in Predicting Intracerebral Hemorrhage After Intravenous Alteplase Therapy Clinical Sciences
Background and Purpose—Intracerebral hemorrhage is a feared complication of intravenous alteplase therapy in patients with acute ischemic stroke. We explore the use of multimodal computed tomography in predicting this complication.Methods—All patients were administered intravenous alteplase with/without intra-arterial therapy. An age- and sex-matched case–control design with classic and conditional logistic regression techniques was chosen for analyses. Outcome was parenchymal hemorrhage on 24- to 48-hour imaging. Exposure variables were imaging (noncontrast computed tomography hypoattenuation degree, relative volume...
Source: Stroke - May 22, 2017 Category: Neurology Authors: Connor Batchelor, Pooneh Pordeli, Christopher D. d’Esterre, Mohamed Naȷm, Fahad S. Al–Aȷlan, Mari E. Boesen, Connor McDougall, Lisa Hur, Enrico Fainardi, Jai Jai Shiva Shankar, Marta Rubiera, Alexander V. Khaw, Michael D. Hill, Tags: Blood-Brain Barrier, Intracranial Hemorrhage, Ischemic Stroke Original Contributions Source Type: research

Intravenous Thrombolysis in Posterior Circulation Stroke
Conclusions: Up to date, no data about PCIS and IVT are available from RTCs. Based on limited results from retrospective clinical studies and case series, IVT is safer for use in PCIS than in ACIS. Patients with brainstem ischemia, vertebral artery occlusion, and absence of basilar or posterior cerebral artery occlusion could be considered for treatment with IVT even in borderline cases. Time to IVT in PCIS seems to be a less crucial factor than in ACIS. IVT for PCIS may be beneficial even after 4.5 h from symptom onset. Introduction History of Intravenous Thrombolysis—The Most Relevant Studies Intravenous...
Source: Frontiers in Neurology - April 25, 2019 Category: Neurology Source Type: research

Conveniently-Grasped Field Assessment Stroke Triage (CG-FAST): A Modified Scale to Detect Large Vessel Occlusion Stroke
Conclusions: CG-FAST scale could be an effective and simple scale for accurate identification of LVOS among AIS patients. Introduction Large vessel occlusion stroke (LVOS) often leads to severe disability and mortality. Although endovascular therapy (EVT) has been proved to be effective for LVOS patients (1–9), especially in anterior circulation, its benefit is highly time-dependent (10, 11). As hospitals with around-the-clock endovascular capability are scarce in many parts of the world and patients admitted directly to a CSC would have better outcomes than those receiving drip and ship treatment (12, 13), t...
Source: Frontiers in Neurology - April 16, 2019 Category: Neurology Source Type: research

Influence of Sex on Stroke Prognosis: A Demographic, Clinical, and Molecular Analysis
Conclusion Our data suggest that women who suffer from IS present with a poorer functional outcome than men at 3-months, regardless of other preclinical and clinical factors during the acute phase. These relationships seem to be mediated by atrial dysfunction and inflammation. The inflammatory response is slightly higher in women; however, there are no sex differences in their functional behavior. There is a probable relationship between the molecular marker of atrial dysfunction NT-proBNP and worse functional outcome in women, and the connection seems to be more important in cardioembolic stroke patients. In patients wi...
Source: Frontiers in Neurology - April 16, 2019 Category: Neurology Source Type: research

Recanalisation therapies for wake-up stroke.
CONCLUSIONS: There is insufficient evidence from randomised controlled trials for recommendations concerning recanalisation therapies for wake-up stroke. Results from ongoing trials will hopefully establish the efficacy and safety of such therapies. PMID: 30129656 [PubMed - as supplied by publisher]
Source: Cochrane Database of Systematic Reviews - August 21, 2018 Category: General Medicine Authors: Roaldsen MB, Lindekleiv H, Mathiesen EB, Berge E Tags: Cochrane Database Syst Rev Source Type: research

Alteplase versus tenecteplase for thrombolysis after ischaemic stroke (ATTEST): a phase 2, randomised, open-label, blinded endpoint study
This study is registered with ClinicalTrials.gov, number NCT01472926. Findings Between Jan 1, 2012, and Sept 7, 2013, 355 patients were screened, of whom 157 were eligible for intravenous thrombolysis, and 104 patients were enrolled. 52 were assigned to the alteplase group and 52 to tenecteplase. Of 71 patients (35 assigned tenecteplase and 36 assigned alteplase) contributing to the primary endpoint, no significant differences were noted for percentage of penumbral salvaged (68% [SD 28] for the tenecteplase group vs 68% [23] for the alteplase group; mean difference 1·3% [95% CI −9·6 to 12·1]; p=0·81). Neither incide...
Source: The Lancet Neurology - February 26, 2015 Category: Neurology Source Type: research

Extending thrombolysis to 4·5–9 h and wake-up stroke using perfusion imaging: a systematic review and meta-analysis of individual patient data
This study is registered with PROSPERO, number CRD42019128036.FindingsWe identified three trials that met eligibility criteria: EXTEND, ECASS4-EXTEND, and EPITHET. Of the 414 patients included in the three trials, 213 (51%) were assigned to receive alteplase and 201 (49%) were assigned to receive placebo. Overall, 211 patients in the alteplase group and 199 patients in the placebo group had mRS assessment data at 3 months and thus were included in the analysis of the primary outcome. 76 (36%) of 211 patients in the alteplase group and 58 (29%) of 199 patients in the placebo group had achieved excellent functional outcome a...
Source: The Lancet - May 24, 2019 Category: General Medicine Source Type: research

Tenecteplase versus Alteplase for Stroke Thrombolysis Evaluation Trial in the Ambulance (Mobile Stroke Unit--TASTE-A): protocol for a prospective randomised, open-label, blinded endpoint, phase II superiority trial of tenecteplase versus alteplase for ischaemic stroke patients presenting within 4.5 hours of symptom onset to the mobile stroke unit
Introduction Mobile stroke units (MSUs) equipped with a CT scanner are increasingly being used to assess and treat stroke patients’ prehospital with thrombolysis and transfer them to the most appropriate hospital for ongoing stroke care and thrombectomy when indicated. The effect of MSUs in both reducing the time to reperfusion treatment and improving patient outcomes is now established. There is now an opportunity to improve the efficacy of treatment provided by the MSU. Tenecteplase is a potent plasminogen activator, which may have benefits over the standard of care stroke lytic alteplase. Specifically, in the MSU ...
Source: BMJ Open - April 29, 2022 Category: General Medicine Authors: Bivard, A., Zhao, H., Coote, S., Campbell, B., Churilov, L., Yassi, N., Yan, B., Valente, M., Sharobeam, A., Balabanski, A., Dos Santos, A., Ng, F., Langenberg, F., Stephenson, M., Smith, K., Bernard, S., Thijs, V., Cloud, G., Choi, P., Ma, H., Wijeratne, Tags: Open access, Neurology Source Type: research

Perfusion computed tomography in patients with stroke thrombolysis
<span class="paragraphSection"><div class="boxTitle">Abstract</div>See Saver (doi:<strong><a href="article.aspx?volume=&page=">10.1093/awx020<span></span></a></strong>) for a scientific commentary on this article.Stroke shortens an individual’s disability-free life. We aimed to assess the relative prognostic influence of pre- and post-treatment perfusion computed tomography imaging variables (e.g. ischaemic core and penumbral volumes) compared to standard clinical predictors (such as onset-to-treatment time) on long-term stroke disability in patients undergoing th...
Source: Brain - December 30, 2016 Category: Neurology Source Type: research

Advances in stroke medicine.
Authors: Campbell BC Abstract In recent years, reperfusion therapies such as intravenous thrombolysis and endovascular thrombectomy for ischaemic stroke have dramatically reduced disability and revolutionised stroke management. Thrombolysis with alteplase is effective when administered to patients with potentially disabling stroke, who are not at high risk of bleeding, within 4.5 hours of the time the patient was last known to be well. Emerging evidence suggests that other thrombolytics such as tenecteplase may be even more effective. Treatment may be possible beyond 4.5 hours in patients selected using brain imagi...
Source: Medical Journal of Australia - May 6, 2019 Category: General Medicine Tags: Med J Aust Source Type: research

Reliability, Reproducibility and Prognostic Accuracy of the Alberta Stroke Program Early CT Score on CT Perfusion and Non-Contrast CT in Hyperacute Stroke
Background: Alberta Stroke Program Early CT Score (ASPECTS) assesses early ischemic change on non-contrast CT (NCCT). We hypothesised that assessing ASPECTS regions on CT Perfusion (CTP) rather than NCCT would improve inter-rater agreement and prognostic accuracy, particularly in patients presenting early after stroke onset.Methods: Ischemic stroke patients treated with intravenous alteplase from 2009 to 2014 at our institution were included in this study. Inter-rater agreement and prognostic accuracy of ASPECTS across modalities were analysed by the time between stroke onset and initial NCCT, dichotomized 1st quartile ver...
Source: Cerebrovascular Diseases - August 15, 2017 Category: Neurology Source Type: research

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