Active clinical trials for "Stroke"

This study will compare early with late start of treatment with Non-vitamin K oral anticoagulation (NOAC) in adult patients with acute ischemic stroke and atrial fibrillation; it is a registry-based randomized clinical trial (R-RCT) using The Swedish Stroke Register (Riksstroke). Half of the patients will start NOAC early (within 4 days after stroke onset) while the other half will start late (5-10 days after stroke onset).

Sleep disorders in the setting of stroke are numerous, including sleep-related breathing disorders, insomnia, excessive daytime sleepiness and restless legs syndrome. Consequences of theses sleep disturbances include impaired functional outcome and quality of life, anxious and depressive troubles and increased cardio-vascular morbi-mortality. Mechanisms underlying sleep disorders in the setting of stroke are complex and still partly elucidated. They probably involve the consequences of the ischemic lesion and of the handicap, but also of associated vascular risk factors and more generally pre-existent medical history, or they could represent themselves a risk factor for stroke. Transient ischemic attack (TIA) is a particular condition in which risk factors and background of patients are similar to that observed in stroke, without any cerebral lesion and no persistent neurological deficit. The main objective of the SOMN'AIC study is to compare the prevalence of sleep disorders in stroke and in transient ischemic attack (TIA). The study hypothesis is that the prevalence of sleep disorders may be higher in stroke than in TIA patients, reflecting the consequences of the lesion and the associated handicap.

This study will contribute to the field of stroke rehabilitation research by expanding the investigator's understanding of the neural mechanisms responsible for the development and expression of abnormal flexion synergy, a primary movement impairment due to stroke. The study will longitudinally evaluate motor tract morphology and motor impairment/function in an attempt to develop early neuroimaging-based predictors of the development of flexion synergy and its impact on reaching and hand recovery (6 month). The study will utilize quantitative motor testing (kinematics and kinetics) to measure motor impairment and reaching and hand function. Both neuroimaging and quantitative motor testing will be conducted within 96 hours-, 2 weeks-, 3 months-, and 6 months-post stroke. The knowledge gained by this study will provide crucial structural and functional neuroimaging evidence that demonstrates the timeline of progressive ipsi- and contralesional motor pathway (including bulbospinal pathways) changes and the associated development of flexion synergy that grossly impacts reaching and hand function in individuals with moderate to severe stroke.

The purpose of this prospective cohort study is to investigate whether antithrombotic therapy in the secondary prevention of ischemic stroke increases the risk of the emerging CMBs and whether the change is associated with an increased risk of intracranial hemorrhage, providing an imaging evidence for individualized antithrombotic therapy in such patients.

Stroke is one of the most important cause of mortality and disability in Brazil. The city of Matão, located in São Paulo state, with a population around 80.000 inhabitants, has conditions to develop a community-based stroke study, which can answer important questions regarding epidemiological data over the time. Therefore, the purpose of this prospective community based study is to observe trends in stroke incidence, types and sub-types of stroke, risk factors, prognosis, 30 days and one year case-fatality during a follow-up of ten years. This study offers the opportunity to conduct an epidemiological study of high quality which can obtain data to formulate public politics to reduce the social and economic impact of stroke in Brazil.

A mono-centre observational study with the aim of compare clinical outcome at 3 month on patients admitted with recent cerebral infarct and intracranial large vessel occlusion in the anterior circulation who are eligible for mechanical thrombectomy in three different position : Patients admitted first in the Comprehensive Stroke Center of Montpellier, those transferred after Proximity Stroke Unit or prehospital bypass for patients with high suspicion of large vessel occlusion.to the Comprehensive Stroke Center of Montpellier

This is a study using magnetoencephalography (MEG) to look at recovery in those with minor stroke. The investigators know that these individuals report difficulties in attention, concentration, multi-tasking, energy level, and processing speed that appear to be independent of lesion size or location. The underlying pathophysiology is unclear; however, anecdotally, many individuals are significantly improved by 6 months post-stroke. One hypothesis is that a single lesion, regardless of size, may disrupt the classic neural networks required for cognitive function. The investigators are currently collecting data to better characterize these difficulties and stroke patients' recovery as part of a previously approved recovery study. In this sub-study, the investigators propose to add MEG at 1 and 6 months in a subset of individuals with small: 1) subcortical, and 2) cortical lesions. The investigators will partner with colleagues at the University of Maryland (College Park), who are well experienced with MEG to conduct this research. In addition a control population of age-similar individuals will be recruited for comparison. Cerebral activation patterns of individuals with stroke versus controls will be compared, both across patients with stroke at a given time point, and within subjects from 1 to 6 months to determine the association of abnormal activation with cognitive dysfunction and recovery. **The investigators have recently extended follow-up by adding an additional assessment at 12 months and will enroll additional participants (up to 40 patients with minor stroke, 15 age-similar controls).

Spatial neglect (SN) is a common heterogeneous cognitive affliction that predicts poor recovery after a stroke. It is important to identify SN so alliviating actions can be initated. Results of this cross-country study between Iceland and Lithuania should provide information on how to best identify SN in clinical care.

This study will explore whether sleep disruption in the sub-acute phase of stroke explains variation in clinical motor outcomes, and whether this relationship is mediated by variation in behavioural measures of overnight consolidation.

The cerebral collateral circulation refers to the subsidiary network of vascular channels that stabilize cerebral blood flow when principal conduits fail. Collateral status differs among patients with acute ischemic stroke. Relatively sparse attention has been devoted to the role of baseline collateral circulation in patients with acute ischemic stroke who are candidates for revascularization. This study aim to investigate the correlation between baseline collateral circulation and the likelihood of opening of an arterial occlusion, the extent of reperfusion, tissue injury and clinical impairment.