Active clinical trials for "Cerebral Infarction"

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

The aim of this study was to determine the prevalence rate and risk factors for chemical laboratory clopidogrel low-response (CLR) in the acute phase after an ischemic stroke.

The purpose of this study is to evaluate the utility of the S-STREAM as an instrument to assess motor function in subjects who have experienced a nonhemorrhagic ischemic stroke.

The purpose of this study is to measure cerebral oxygenation and cardiac output of total shoulder replacement patients undergoing general anesthesia (GA) and positive-pressure ventilation (PPV). We hypothesize that cerebral desaturation occurs frequently during GA with PPV, but is rare during GA and spontaneous ventilation. We also hypothesize that cardiac output usually is well maintained under GA in the sitting position when epinephrine is used, but that decreased cardiac output increases the risk of cerebral desaturation.

Although there has been increasing interest in the association between cancer and cerebrovascular disease, the underlying pathophysiology of stroke in cancer patients is still not fully understood. The aim of this study is to investigate the stroke mechanisms in patients with cancer-associated stroke.

Post-Market Registry on Use of Merci Retrieval System. Primary data to be collected will include: Post-procedure revascularization success 90-day mRS 0-2 90-day mortality

Introduction For several years "ischemic" electrocardiographic (ECG) changes in the acute phase of ischemic stroke have been reported. Whether these ECG changes reflect true myocardial ischemia remains controversial. So far no study has assessed different markers of myocardial ischemia or necrosis in consecutive patients admitted to hospital with an acute ischemic stroke. Purpose The main purpose of this study is to determine the potential burden of reversible and irreversible myocardial ischemia in patients with an acute ischemic stroke. Patients and methods Serial blood samples for measuring troponin T, CK-MB and NT-proBNP are collected in 250 patients with evidence of an acute ischemic stroke admitted to the Department of Neurology at Odense University Hospital. In addition resting 12-lead ECG recordings will be obtained on a daily basis, and a 24-hour ST-segment ambulatory monitoring will be performed once within the first week of hospitalisation. Finally, myocardial perfusion patterns during rest will be evaluated by means of a myocardial perfusion scintigraphy in patients with an elevated troponin T level. Six months later control measurements of troponin T, CK-MB and NT-proBNP and a 12-lead ECG will be obtained. Expectations The study will contribute with original observations in patients with acute ischemic stroke considering the following issues: The prevalence and characteristics of ECG changes suggestive of myocardial ischemia. The prevalence of transient ST-segment changes on ambulatory monitoring. The prevalence and degree of myocardial necrosis as judged from biochemical markers. The prevalence of reversible and irreversible perfusion defects on myocardial scintigraphy. The prevalence, size and patterns of NT-proBNP. Whether there is a change in ECG and biochemical markers over a 6-month follow-up period. The results may have clinical implications regarding early and late treatment as well as clinical follow-up of patients recovering from an episode of acute ischemic stroke.

Using patients receiving spinal anesthesia as a model to evaluate the treshold value of cerebral oximeter to detect the symptoms of cerebral ischemia

Hyperglycemia is present in 50 percent of patients with acute ischemic stroke. Patients with hyperglycemia have higher in hospital, 30 and 90 day mortality and morbidity. Sixty percent of these patients have some form of diabetic syndrome, known or unknown. Remaining 40% of patients are not diabetic. Contrary to logic patients with non diabetic hyperglycemia (NDH) have statistically higher morbidity and mortality compared to the diabetic hyperglycemia (DH) cohort. So far multiple treatment trials (THIS, GRASP, GIST-UK, SHINE ongoing) with differing treatment goals have shown no clear benefit, however no obvious distinction was made along the diabetic and non-diabetic hyperglycemic groups. If hyperglycemia in the acute phase was the only culprit in worsening the injury, then there should be no difference in the outcomes for DH and NDH. Existing data implies that the two categories are two distinct physiological entities that are thus not amenable to same treatment. Stating it simply NDH is not an insulin deficient state where as DH is. Alternative possibility is that body and Neurons are accustomed to high sugars in diabetics and thus can tolerate higher sugars better during ischemic stroke compared to non diabetics. The overarching hypothesis is that reducing blood sugars in NDH increases stroke volume and thus consequently worsens outcome.

Nurses at Royal Derby Hospital, UK have been trained to use a comprehensive protocol based dysphagia assessment (Dysphagia Trained Nurse Assessment (DTNAx)) to assess all acute stroke patients on admission. This study aims to validate the tool by comparing it to the gold standard assessment - Videofluoroscopy and usual assessment by a Speech and Language Therapist. Inter-rater and intra-rater reliability will also be tested by comparing the assessment results of two different nurses or the same nurse.