Active clinical trials for "Ischemic Stroke"

This is a multi-centre, prospective cohort study. The aim of this study is to investigate causes, risk factors, clinical course, management and outcomes of severe ischaemic stroke in a real-world setting in tertiary hospitals in China. Patients with acute ischaemic stroke from nine tertiary hospitals in western China will be recruited. Participants will be visited within 24 hours after admission, on day 3, day 7 and at discharge, to collect their clinical data, blood biomarkers, and brain imaging. A structured telephone interview will be conducted for each participant at 3 months and 1 year after stroke onset, respectively, to collect their functional outcomes. In-hospital outcomes include haemorrhagic transformation, brain oedema and death, 3-month and 1-year outcomes include survival status (death or survival) and functional outcome (scores of modified Rankin scale, mRS).

Ischemic stroke is the leading cause of acquired disability among adults, and one of the main causes of death. In Switzerland, the approved time window for stroke treatment with intravenous thrombolysis after symptom onset is 4.5 h. Even within the 4.5 h time-window, however, the benefit of treatment strongly decreases as time passes. Moreover, only around 10% patients receive thrombolytic treatment, since patients with stroke arrive too late to the hospital (prehospital delay). Despite efforts to educate the community on the symptom of stroke, prehospital delay did not decrease over time, and the reasons remain incompletely understood. Prehospital delay reduces the proportion of patients with ischemic stroke treated with thrombolysis, and reduces the odds of favorable outcome among the minority treated with thrombolysis. This prospective cohort study aims at understanding the causes of prehospital delay among patients with acute ischemic stroke. Trained study-nurses will interview, at the bedside, patients and proxies along a standardized questionnaire on prehospital delay. Avoiding modificables causes of prehospital delay may increase the thrombolysis rate and improve outcomes after stroke.

Stroke is the second most frequent causes of mortality in the word after cardiovascular disease and the most frequent cause of disability. The majority of strokes are ischemic (87%). Ischemic stroke may benefit from efficient therapy if the delay from stroke onset not exceeds 4H30 (intra-venous thrombolysis). In case of irreversible cerebral lesion, the long term functional recovery is largely dependent from the ability of the brain to reorganize. Conventional magnetic resonance imaging represents the most sensitive tool to diagnose stroke at the acute phase. However, up to now, no imaging tool is available to determine the time of stroke onset. Moreover, no imaging tool is available to precisely quantify the functional and structural plasticity mechanisms occurring after stroke. The main objective of the present study is to test the accuracy of sodium MRI to determine the time of stroke onset. The secondary objectives of the study are to determine the ability of non-conventional MRI techniques to quantify the degree of tissue damage and brain reorganization after stroke. Thirty patients will be included during the first 24 hours after stroke onset. Multimodal MRI (including perfusion MRI, sodium MRI, resting-state functional MRI, high resolution anatomical MRI) and clinical evaluation will be carried on at the inclusion, after 24 hours, at 3 months and at 12 months.

The purpose of this study is to determine whether Magnetic Resonance Imaging may predict the risk of Intracerebral Hemorrhage for patients with ischemic stroke who receive indefinite oral anticoagulation

The purpose of this study is to examine the hemodynamics of stroke patients with near-infrared spectroscopy before, during and after endovascular treatment and their relations to disabilities and mortality 3 months after treatment.

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.

This cohort study will evaluate the relatiobship of stroke recurrence and anti-platelet resistance in ischemic stroke patients

About 5% of COVID-19 patients may present symptoms related to acute ischemic stroke (AIS). Treatment-management and outcomes related to mechanical thrombectomy (MT) for COVID-19 infected patients harboring large vessel occlusion is largely unknown. This multicentric study aims to investigate morbidity, mortality and neurological outcomes after MT performed in patients with COVID-19 infection.

200 patients presenting with symptoms of acute ischemic stroke or transient ischemic attack were included. All patients free of AF on presentation underwent 48 hours Holter monitoring within one week.

This protocol is part of an Individual Patient Expanded Access IND. The patient is an 84-year-old male with history of Ischemic Stroke of the Left Middle Cerebral Artery causing an acute posterior left frontal cortical infarct with petechial hemorrhage and mild local mass effect without midline shift. The Stroke was due to a long-standing evolution of atrial fibrillation that provoked an embolus. The original stroke event happened on February/14/2022.