View clinical trials related to Ischemic Attack, Transient.
Filter by:The study was designed as a multicenter multiracial prospective observational study of acute ischemic stroke and TIA patients across china. The purpose of this study is to determine the monogenic disorders incidence of Chinese early-onset stroke patients. We plan to consecutively enroll more than 500 patients with early-onset stroke(in the 18- to 45-year age range) admitted in stroke units within 7 days after symptoms onset in participating centers. These early－onset stroke patients are referred for targeted sequencing using 'cerebrovascular disease panel'. By analyzing the sequencing results, we intend to identify monogenic causes causing early－onset stroke and develop clinical algorithms that might assist the clinician in deciding in which early－onset stroke patients testing for monogenic causes of stroke.
Study Design: This is an investigator-initiated prospective, open label, single arm phase IV study. Patients with documented non-valvular atrial fibrillation (AF) with acute TIA (defined as acute focal neurological deficits, with complete resolution of symptoms within 24 h of onset) or ischemic stroke, irrespective of infarct volume or clinical severity will be enrolled. Study Aim and Objectives: The overall aim of this study is to demonstrate the feasibility and safety of initiating apixaban therapy within 14 days of TIA or ischemic stroke regardless of the size and severity in patients with AF. Investigators will systematically assess prospectively collected CT scan images for evidence of HT and re-infarction.
This study evaluates the feasibility and effectiveness of an oropharyngeal exercise (O-PE) regimen in treating post-stroke obstructive sleep apnea, as an alternative therapy to continuous positive airway pressure (CPAP). Eligible patients will be randomized (1:1) to treatment using a pre-specified schedule of O-PEs vs. a sham control arm.
Predicting the risk of stroke remains a challenge in the management of transient ischemic attack (TIA). In addition to clinical variables, morphological features such as the presence of a diffusion weighted sequence (DWI) lesion and carotid stenosis of at least 50% improve risk stratification and are considered in the literature. score ABCD3-I1. Several studies have shown that brain microhemorrhages are associated with the risk of early stroke in patients with TIA. Data on white matter hypersignals on the T2-weighted sequence or FLAIR (FLuid Attenuated Inversion Recovery) are more conflicting. The global microangiopathic load, including the gaps, the hypersignals of the white matter, the perivascular spaces visible on MRI in the basal ganglia, especially when they are very numerous (> 20) and the gaps, have recently been described as being associated with stroke risk within 2 to 3 years of TIA or ischemic stroke. To date, the predictive value of global microangiopathic burden on early stroke risk in the course of TIA is not known.
This study aims to gather information to what extent patients follow the treatment regimen of low-dose aspirin for primary and secondary prevention of diseases of the heart and blood vessels. Researcher will collect information about the percentage of time a patient has access to the medication, how long patients continue with the medication and of the proportion of patients who switch from dual-antiplatelet therapy (including low-dose aspirin) to a single antiplatelet therapy. The study will make use of secondary healthcare data sources converted in to Observational Medical Outcomes Partnership (OMOP) common data model within the Observational Health Data Sciences and Informatics (OHDSI) network.
The primary objective of this trial is to assess the effects of ticagrelor plus aspirin versus clopidogrel plus aspirin on reducing the 3-month risk of any stroke (both ischemic and hemorrhagic, primary outcome) when initiated within 24 hours of symptom onset in CYP2Y19 LOF alleles carriers with TIA or minor stroke.
Despite advances in stroke care, women continue to face worse outcomes after stroke than men. This disparity in outcomes may be related to biologic sex-differences that manifest in the development and progression of atherosclerosis. Decades of cyclic changes in the hormonal milieu lead to different metabolic profiles in women. These changes may also explain sex-differences in risk factor profiles of atherogenesis and plaque composition. The investigators' objective is to conduct a cross-sectional MR imaging study of suspected stroke patients to compare the burden and composition of intracranial atherosclerosis and risk factors between men and women. Results from this study are expected to show that sex and sex-specific risk factors should be considered at the outset of stroke evaluation for risk-stratification. In the era of precision medicine, the investigators propose the role of sex should be a starting point in the clinical evaluation of stroke.
To date, the investigators have successfully employed a radiotracer (18F-sodium fluoride) as a marker of necrotic inflammation in human atherosclerosis. The investigators aim to further the mechanistic understanding of atherothrombosis by studying the activation of glycoprotein IIb/IIIa receptors in cardiovascular thrombus using the novel platelet radiotracer (18F-GP1). Binding of 18F-GP1 to activated platelets in venous and arterial thrombi has already been demonstrated in pre-clinical studies and a phase 1 trial in man. If successful, this study would define the role of the glycoprotein IIb/IIIa receptor within in vivo thrombosis across a range of cardiovascular diseases.
For a long time, delirium was considered a merely temporary dysfunction of the brain. Today, it is established that it is a brain disease associated with network dysfunction, neuroinflammation and impaired transmitter homeostasis in a multicausal model. Following an episode of delirium, many patients do not return to their prior level of cognitive and functional performance. In particular, failed or delayed diagnosis with consecutive inadequate therapy contribute to the development of long-term cognitive decline that may ultimately lead to long-term care. Stroke patients are a particularly common delirium-affected population (10-46% depending on severity). Despite the frequency and clinical relevance of delirium in stroke patients, diagnostic characteristics of common screening methods are unknown. Similarly, the clinical phenotype and risk factors of patients who develop delirium have not been adequately described. This study primarily aims to evaluate the diagnostic properties of established screening tools for delirium in a prospective cohort of well-characterised patients following ischemic cerebral events (either transient or manifest stroke). Secondary outcome criteria include predictors of post-stroke delirium (PSD) such as stroke location and size, pre-stroke cognitive functioning, ability to participate in daily routine activities and medical conditions.
The DELPhi system is a software device that is used for the noninvasive evaluation of brain plasticity and connectivity. The DELPhi software uses EEG and TMS devices as accessories. Standard electro-physiological acquisition is performed using TMS to evoke regional neuronal potentials measured as EEG data. TMS-EEG data is analyzed with regards to conventional, well established characteristics of neuronal network plasticity and connectivity.