View clinical trials related to Transient Ischemic Attack.
Filter by: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.
Transient ischemic attack (TIA) is a common neurologic emergency. Although the detection of atrial fibrillation (AF) has identical consequences for preventive therapy in patients with ischemic stroke and TIA, the management setting and diagnostic pathways frequently differ substantially between both manifestations. Despite these differences between stroke and TIA patients, previous studies have investigated diagnostic work-up for AF primarily in stroke patients. Thus, there is no common practice or "gold standard" of rhythm monitoring for TIA patients in most healthcare systems and the optimal method and duration of cardiac monitoring for TIA patients is currently unknown. This is likely to result in a substantial under-diagnosis of AF in TIA patients, failure to initiate appropriate secondary preventive medication (i.e. anticoagulation) and ultimately the occurrence of many otherwise preventable strokes. The primary research question of the trial is whether prolonged ECG recording (intervention) significantly increases the rate of detection of paroxysmal AF compared to 24 h electrocardiogram (ECG) monitoring (control) 6 months after start of monitoring in patients with recent TIA. The co-primary question of the trial is whether 28 d non-invasive continuous ECG monitoring is non-inferior to ECG recording using an implanted event recorder for AF detection.
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.
The purpose of this study is to assess the safety and efficacy of glucagon-like peptide-1 (GLP-1) analogue liraglutide in the treatment of acute minor stroke (National Institute of Health stroke scale, NIHSS ≤ 3) or high-risk transient ischemic attack (TIA) (ABCD2 score ≥ 4 ) patients with type 2 diabetes mellitus.
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 aim of the study is to find a radiological biomarker of Transient Ischemic Attacks (TIA) thanks to functional Magnetic Resonance Imaging (fMRI) done within the 24 hour after symptoms onset.
The purpose of this study is to determine whether DEB is not inferior to common bare metal stent using under in long-term vessel patency and inhibiting restenosis in Vertebral Artery Ostium Stenosis
The proposed study will investigate the clinical use of the ISCDX test that may differentiate between diverse stroke etiologies as listed below: Aim 1: Differentiate between cardioembolic and large artery atherosclerotic ischemic strokes, when hemorrhagic stroke is ruled out, as defined by TOAST classification of subtypes of acute ischemic stroke. Aim 2: In cases of ischemic strokes of unknown or "cryptogenic" etiology, determine the ability of biomarker blood tests to predict etiology between cardioembolic and large artery atherosclerotic.
Adequate brain blood flow is essential for brain survival and function. Brain blood flow is kept relatively constant by a process called cerebral autoregulation (CA). CA is impaired in various diseases including head injury, diabetes, Alzheimer's, pre-eclampsia and stroke. In stroke, impaired CA is associated with poor outcomes. A transient ischaemic attack (TIA) is the same as a stroke, except the symptoms only last for a short amount of time and resolve spontaneously. TIAs are sometimes called mini-strokes and are a major warning sign of strokes. There have been lots of studies of CA in stroke, but very few studies of CA in TIA. Brain blood flow and CA can be studied non-invasively with Transcranial Doppler ultrasound (TCD). Study aim: To investigate whether CA is impaired in patients with TIA 20 patients with acute TIA (within 7 days), and 20 healthy controls will be recruited from the specialist TIA clinic at University Hospitals of Leicester NHS Trust. Participants will be eligible if they are aged over 18 and can consent to participate. They won't be able to participate if they have severe heart failure, an irregular heartbeat, blocked neck blood vessels, severe breathing problems, or if they are pregnant. Participants will undergo an assessment of brain blood flow using TCD, during which their heart rate, breathing and blood pressure will also be monitored. During the assessment participants will sit quietly before being asked to stand and then complete a squat-stand manoeuvre in time with a computer sequence. The research visit will take approximately 90 minutes, the assessment itself will take approximately 1 hour and participants only need to attend once.