Active clinical trials for "Ischemic Stroke"

Intravenous tissue plasminogen activator (IV t-PA) is the only proven treatment of hyperacute cerebral infarction. The outcome of this treatment highly depends on the time from symptom onset to the administration of thrombolytic agent. Last known normal time is widely used as the standard to determine the symptom onset. These stroke symptoms are usually caused by a sudden decrease in cerebral blood flow related with an embolic or thrombotic event. However, in some cases various symptoms may occur one after another. Myocardial infarction is also caused by a sudden caseation of blood flow. The symptom of myocardial infarction usually contains chest pain, and it is easy to identify the exact time of onset. In contrast, cerebral infarction may cause various symptoms according to the infarcted area of the brain, and sometimes multiple symptoms are presented in rapid succession. Therefore, it may be much unclear and uncertain to determine the onset time of cerebral infarction. Despite the importance of onset time in therapeutic decision making, there was no study focusing on the certainty of onset time in cerebral infarction patients. In this study, we will investigate the subjective certainty of patient about the onset time in clear-onset cerebral ischemia. The discrepancy in diagnosing the onset time will be analyzed among the clinicians involved in the practice. Then, the factors associated with this uncertainty will be verified.

The purpose of this study is to use an intravenous infusion of allogeneic human mesenchymal stem cells (Allo-hMSCs) to treat an acute ischemic stroke condition.

This is an expanded access program (EAP) for eligible participants. This program is designed to provide access to Elezanumab prior to approval by the local regulatory agency. Availability will depend on territory eligibility. A medical doctor must decide whether the potential benefit outweighs the risk of receiving an investigational therapy based on the individual patient's medical history and program eligibility criteria.

To explore the prevalence of genetic polymorphism on RNF213 rs112735431 gene in non-cardioembolic ischemic cerebrovascular disease in Thai patients.

Stroke is a devastating disease that affects 15 million patients worldwide each year, resulting in death in about one-third of patients and severe disability in two-thirds of the survivors. Ischemic stroke in young adults is often thought to be related to rare risk factors and etiological features that are very different from the 'traditional' vascular risk factors and etiology seen in older stroke patients. However, the increase in stroke incidence in young adults has been found to be associated with a rising prevalence of some important traditional vascular risk factors, including hypertension, hypercholesterolemia, diabetes mellitus and obesity, in this age group. Risk factors Modifiable risk factors are the same for both younger and older age groups. However, the prevalence of these risk factors is not the same in these two age groups. Hypertension, heart disease (including atrial fibrillation), and diabetes mellitus are the most common risk factors among the elderly A considerable minority of ischemic stroke cases remains etiologic-ally undefined However, there is still scant information on the role of risk factors and the clinical course in etiologic stroke sub-types. Although the risk factors of ischemic strokes are well defined, there is slight information about their relations with the etiologies of ischemic strokes. This study will investigate the distribution of ischemic stroke risk factors and their connections to diverse etiologies of cerebrovascular attack (CVA) and specific ischemic regions of brain. Considering that the prevalence of stroke risk factors rises with aging, the incidence of stroke will increase in further decades as the populations get older. The mortality and morbidity of each stroke pattern is different. So realizing the relation between stroke risk factors and its patterns can show the burden of preventing and treating every risk factor on the outcome of stroke.

Stroke has become the leading cause of death in China. It has been shown that intracranial artery stenosis (ICAS) plays a key role in Chinese stroke patients. Although most of stenotic diseases in intracranial arteries are atherosclerotic, a substantial number of other vascular diseases, such as dissection, arteritis, moyamoya disease, and reversible cerebral vasoconstriction syndrome (RCVS), can also lead to intracranial artery luminal narrowing. It is challenging to differentiate the etiologies of ICAS relying on measuring luminal narrowing by angiographical approaches. In addition, the progression of intracranial atherosclerotic disease (ICAD) has been demonstrated to be highly associated with the risk of ischemic cerebrovascular events. However, the influence factors for ICAD progression remains unclear. High-resolution magnetic resonance imaging (HR-MRI) has been widely used to assess ICAS diseases. The different etiologies of ICAS are differentiable by MR-MRI according to the features of location, shape, signal pattern, remodeling, and contrast enhancement. Investigators have proved that HR-MRI is a reproducible technique that may be reliably utilized to monitor the changes of ICAD during natural follow-up or medical treatment. The ICASMAP (Intracranial Artery Stenosis MR Imaging: Aetiology and Progression) is a prospective, cross-sectional, observational, and multicenter study. The objectives of ICASMAP are to determine: 1) the spectrum of etiology of ICAS in stroke patients; and 2) the influence factors for progression of ICAD. A total of 300 patients with symptomatic stenotic disease in intracranial arteries (stenosis range: 30%-99%) will be recruited within two weeks after symptom onset from 18 different hospitals across Beijing-Tianjin-Hebei region in China within 1 year. All the patients will undergo HR-MRI for intracranial arteries at baseline, one-year, and two-years. The clinical risk factors will be collected and blood draw will be conducted. The ICASMAP study may help to improve the precise diagnosis and intervention of ICAS and stroke prevention.

This study is a prospective, open-label, multi-center, registry study, designed to to documents that EmboTrap II usage as a thrombectomy device for emergency large vessel occlusion (ELVO) in terms of the rate of First Pass Recanalization (FPR). Patients with ELVO will initially underwent mechanical thrombectomy usig EmboTrap II. FPR is defined as modified Tissue Thrombolysis In Cerebral Ischemia (mTICI) 2b or 3

This study aimed to explorie the biological basis of phlegm-dampness syndrome in patients with ischemic stroke using proteomics research techniques of urine and saliva.

Post-stroke cognitive impairment(PSCI) is one of the most important factors causing disabilities after stroke. Recent study found that gut microbiota plays a key role in neurological diseases. Two recent small sample studies reported gut dysbiosis in PSCI patients. In order to further verify the relationship between PSCI and gut microbiota and the predictive value of gut microbiota and serum markers for cognitive impairment and poor prognosis after ischemic stroke. The study intended to collect stool specimens of patients with acute ischemic stroke and assess their cognitive psychological state, and to establish a prospective multi-center follow-up cohort to explore the correlation between the dynamic changes of intestinal flora in patients with stroke and PSCI and poor prognosis of stroke.

Vocal stimulation may encourage spontaneous breathing in patients dependent on mechanical ventilation. The study will include 30 patients on mechanical ventilation that will be intervened by the vocal stimulation and 30 patients on mechanical ventilation will serve as the control group.