Active clinical trials for "Stroke"

Following a stroke , 55% of the patients do not recover any traction of the upper limb and 30% a residual motricity not allowing a functional grip. For this last group of patients, there are major therapeutic issues to restore a functional grip. The aim of the study is to relieved the spastic cocontractions before and after usual injection of botulinum toxin A at stroke patient.

It may be hard to acquire stable sensorimotor rhythm from the affected motor cortex for patient without a response of paretic hand. A few studies suggest two ways to approaching closed-loop therapy: peripherally extracting the residual signals, for example electromyogram (EMG) at proximal muscles (deltoids) and centrally extracting the activity patterns from unaffected hemisphere during attempting to move paretic hand. Therefore, understanding neural signatures of residual upper extremity movement among stroke patients might help in discovering potential therapeutic target and developing tailored brain-computer interface (BCI) therapy. Additionally, 59.4% of stroke patients in acute stage impair at least one somatosensory modality. It remains unclear whether the patient with somatosensory impairment hinder BCI effect.

Stroke is an independent risk factor for venous thrombosis (VTE), which leads to a significant increase in the mortality and disability rate after stroke. For patients with high risk factors for VTE such as advanced age, paralysis, infection, dehydration, etc., the incidence of death and disability is higher. Studies have shown that the incidence of deep vein thrombosis in bedridden ischemic stroke patients is about 20%, and the incidence of pulmonary embolism is about 2%, and causes 10% of post-stroke deaths. In order to prevent the occurrence of VTE, the American Heart Association, the American Stroke Association, the Cerebrovascular Disease Group of the Neurology Branch of the Chinese Medical Association, etc. pointed out in the guidelines that heparin or low molecular weight heparin should be used for stroke patients with "restricted mobility" or "incapable mobility" to prevent VTE. For patients with evidence of thrombosis or symptoms of DVT, antithrombotic therapy should be initiated immediately. Paradoxically, ischemic stroke significantly increases the risk of cerebral hemorrhage. Besides There is an increased risk of primary intracerebral hemorrhage (ICH) associated with aspirin or antiplatelet agent monotherapy and it is difficult to achieve a balance between preventing blood clots and reducing the risk of bleeding complications. In addition, stroke patients are elderly and have speech and intellectual impairment, and the non-specific symptoms and signs of intracranial hemorrhage caused by improper antithrombotic therapy make the rate of misdiagnosis and missed diagnosis extremely high. Therefore, clarifying the clinical characteristics of stroke patients with VTE and launching targeted interventions to effectively balance the risk of anti-thrombosis and bleeding have become the key to improving the prognosis of patients. This study is based on real-world data to study the bleeding risk and antithrombotic treatment options in VaS (1) the risk factors associated with hemorrhage in patients with VTE after stroke; and (2) the characteristics and pharmacotherapeutics regimen of high-risk populations with VTE after stroke; and(3) the Optimal antithrombotic treatment regimen for patients with VTE after stroke, including the timing of starting and stopping the antithrombotic treatment, selection of varieties, dosage, and course of treatment, etc.

Stroke is one of the most prevalent pathologies worldwide and its consequences require long-term treatment. The current situation caused by the Sars-cov-2 virus has collapsed health systems and has delayed these patient's treatment. The proposed alternative is telerehabilitation: a treatment system that has already proved its effectiveness. However, the difficulty to assess the stroke patient's functional status is the great problem. For this reason, a Fugl Meyer Assessment Scale adaptation, one of the most widely used (in research and in clinic), is proposed to be carried out remotely. The objective of our study is to validate this scale in stroke patients.

Prospective multicenter study of consecutive patients with acute ischemic stroke and large intracranial vessel occlusion in which a thorough and systematic evaluation of all variables that may be related to the degree of collateral circulation is performed.

Autoimmune diseases are diseases in which inappropriate immune responses that have the capability of harming host cells play an important role. Evidence suggests that the presence of certain autoimmune diseases such as rheumatoid arthritis or systematic lupus erythematosus increase the risk of cardiovascular disease (CVD). However, this evidence is inconsistent for autoimmune disorders and no systematic approach has been previously used to study the relationship between a range of common autoimmune disorders and specific forms of cardiovascular diseases such as myocardial infarction, intracerebral and subarachnoid haemorrhage, or venous thrombosis. The investigators will use linked electronic health records to investigate whether commonly diagnosed autoimmune disorders are associated with increased risk of CVD development and whether effects differ in men and women and change with age.

The association between alcohol consumption and cardiovascular disease (CVD) has mostly been examined using broad endpoints or cause-specific mortality. The purpose of our study is to compare the effect of alcohol consumption in the aetiology of a range of cardiovascular disease phenotypes.

It is recognized that endothelial dysfunction is a major factor contributing to the atherogenic process. Abnormal function of the endothelium is detectable prior to obvious intimal lesions in patients with risk factors for atherosclerosis. Endothelial dysfunction is a systemic disorder and a key variable in the pathogenesis of atherosclerosis and its complications. Measurement of peripheral vasodilator response with fingertip peripheral arterial tonometry (PAT) technology (EndoPAT; Itamar Medical, Caesarea, Israel) is emerging as a useful method for assessing vascular function. EndoPAT may be a potential valid test increasing the accuracy, sensitivity and specificity for detection of subjects to chest pain unit (CPU) with chest pain but no obvious coronary artery disease (CAD). This is a relatively fast non-invasive bedside test, relatively low-cost and has no side effects. Therefore, the primary objective of the study is to test the hypothesis that abnormal endothelial function as assessed by EndoPAT testing will increase the prediction of the short (in-hospital) and long-term (1-year) outcome of patients presenting to the chest pain unit.

The time window for intravenous recombinant tissue plasminogen activator treatment in ischemic stroke patients has been extended to 4.5h. Little is known about intravenous recombinant tissue plasminogen activator use in the 3-4.5 hour time window among Chinese stroke patients. This exploratory study was to describe the feasibility and outcome of treatment with intravenous recombinant tissue plasminogen activator in the expanded time window, and to offer suggestions for future clinical work in China.

Early recurrence of cardioembolic stroke in patients with atrial fibrillation is common, reaching approximately 6% within 30 days after initial stroke. Therefore, it is preferable to provide early anticoagulation for cardioembolic stroke. However, early anticoagulation may increase the risk of hemorrhagic transformation of cerebral infarcts. It is difficult to decide the timing of initiation for anticoagulant therapy in stroke patients with non-valvular atrial fibrillation (NVAF). In 2013 the European Heart Rhythm Association presented the practical guides for oral anticoagulants in NVAF patients, which recommend that the optimal time to start anticoagulant therapy should be determined according to the stroke severity. However, this recommendation is principally an experts' opinion and is not suitable in the clinical practice in Japan. RELAXED, a multicenter observational study is planned to evaluate the efficacy and safety of an oral direct activated coagulation factor Xa inhibitor, rivaroxaban, for acute ischemic stroke patients with NVAF in consideration of the infarct size, timing of initiation for rivaroxaban medication, and other patient characteristics, and thereby to determine the optimal timing of the initiation during acute ischemic stroke. The consecutive acute ischemic stroke / transient ischemic attack (TIA) patients with NVAF who are treated with rivaroxaban will be enrolled. The infarction size at 0-48 hours after stroke onset will be measured by the diffusion weighted image (DWI) MRI. The primary efficacy endpoint is recurrent ischemic stroke within 3 months. The primary safety endpoint is major bleedings within 3 months. The optimal timing to initiate rivaroxaban during acute ischemic stroke is determined by analysis of co-relation between primary endpoints and the infarct size / time to initiate rivaroxaban.