View clinical trials related to Stroke.
Filter by:Ischemic stroke is a leading cause of death and disability worldwide. Atherosclerosis, responsible for the 20% of ischemic strokes, is characterized by lipid accumulation in the artery wall that leads to chronic inflammation, cell proliferation and ultimately to vessel stenosis. One of the main features related to plaque progression and vulnerability is inflammation. Positron emission tomography with 18-fluorodeoxyglucos (18-FDG PET) allows an accurate quantification of plaque inflammation and it has been proved its usefulness in predicting early stroke recurrences. The investigators aim to test how modifiable vascular risk factors influence plaque inflammation assessed by 18-FDG PET. In addition, investigators will assess the association of this inflammation and circulating endothelial progenitor cells
Remote ischemic postconditioning (RIPC) is suggested to protect the cerebral cell against ischemia in various settings. However, the effect of RIPC in patients with acute ischemic stroke who undergo thrombolysis has yet to be examined. In this single-center, randomized controlled trial, we examined the effect of RIPC on the resolution of nerve function deficient in response to thrombolysis. Patients in the RIPC group had five cycles of 5-min cuff inflation followed by 3-min deflation to the bilateral upper arm after thrombolysis. The primary endpoint was the recovery of nerve function deficient assessed by National Institutes of Health Stroke Scale(NIHSS), Activities of Daily Living(ADL), Modified Rankin Scale(mRS), CT cerebral perfusion imaging (CTP) and CT angiography(CTA). Secondary endpoints included the following: angiogenesis assessed by the level of vascular endothelial growth factor (VEGF), basic fibroblast growth factor (bFGF).
Increased iron load could be a risk factor for cardiovascular diseases (CVD). Red meat consumption affects iron status and has also been shown to be related to increased CVD risk. The investigators hypothesized that risk associations between red meat intake and cardiovascular disease risk can to some degree be explained by higher iron load among individuals with higher meat intake. Thus, the investigators evaluate associations between red meat consumption, iron status, and CVD risk in a large-scale population based study, the European Prospective Investigation into Cancer and Nutrition (EPIC) - Heidelberg.
The incidence of Stroke in France is about 150 000 per year. Stroke represents the leading cause of long-term disability. The specificity of stroke is the sequelae polymorphism that can occurs: physical disability, cognitive deficit and sensitive trouble. Then this large extend of sequelae may have a different impact on daily life. Therefore, we have to consider the individual's own resources and in his whole environment to face the situation. We suppose that each situation, each post-stroke disability will have a different social impact in stroke survivors and their caregivers. Nowadays, Barthel Index and Rankin scale are the standards for the assessment of the stroke impact on survivors' daily life. However, what is the real impact of an activity limitation in daily life? How consider the psychosocial impact of stroke only with functional indicators? For this study we will consider handicap and disability in a societal way. In fact, the WHO developed in 2001 the International Classification of functioning, disability and health that allows to bring the concept of participation restriction, this is to say the consequences of a disability in the real life. The ICF allows to bring a conceptual framework of participation restriction. Psychosocial consequences of stroke are relatively unknown especially in France. According to our hypothesis, patients with major disabilities and their caregivers will experience more psychosocial consequences and participation restriction in terms of emotional health, quality of life and burden. Also, we hypothesize that stroke severity, the typology of disabilities (motor, cognitive and sensorial) will have a different impact on patients and proxys' lifes in terms of psychosocial consequences, participation restriction and quality of life. TYBRA study is a prospective multicentric cohort study that mixes qualitative and quantitative approaches. The first aim of the quantitative approach is to explore factors related to patients and their caregivers at 6 months that predict participation restriction at 12 months post-stroke. The first aim of the qualitative study is to explore the experience of stroke in minor stroke patients and their proxys.
Perinatal stroke causes lifelong neurological disability and most hemiparetic cerebral palsy (CP). With morbidity spanning diverse aspects of a child's life and lasting for decades, global impact is large, including 10000 Canadian children. With pathophysiology poorly understood and prevention strategies non-existent, the burden of hemiparetic CP will persist. Limited treatments lead to loss of hope for children and families, necessitating exploration of new therapies. The investigators have evidence that the investigators have a durable new treatment for perinatal stroke, combining non-invasive neurostimulation and child-centred intensive rehabilitation. Via the CHILD-BRIGHT SPOR national network, the investigators will execute a multicentre trial to prove this treatment can improve function in children with perinatal stroke and hemiparetic CP. Using novel advanced technologies not available elsewhere in the world, the investigators will explore how developmental plasticity determines function and response to neuromodulation therapy. This patient oriented effort will advance personalized, precision medicine in pediatric neurorehabilitation to improve outcomes for disabled children and their families.
Carotid artery stenting(CAS) and endarterectomy(CEA) are both important treatment strategy for patients with ICA (internal carotid artery) stenosis. Three dimensional pseudo-continuous arterial spin labeling (pCASL) is a noninvasive perfusion imaging modality to detect reperfusion for recanalization therapy. And it provides information about absolute CBF (ml 100 g−1 tissue min−1) at the brain tissue level. The aim of the present study was to evaluate the series hemodynamic changes in patients who had conducted CAS or CEA by using 3D pseudo-continuous arterial spin labeling (pCASL) to explore the potential pattern of CBF alternation and thus to improve the prevention strategy for hyperperfusion syndrome.
The objective of this study was to document longitudinal outcomes in persons with traumatic brain injury (TBI) or stroke using the myoelectric upper limb orthosis with powered elbow and grasp in conjunction with motor learning-based therapy using both patient centric performance and patient reported outcome measures. Longitudinal observation allowed the investigators to detect both the initial therapeutic effects as well as the later functional outcomes of orthosis use. The investigators planned to recruit 15 Veterans and non-veterans who had TBI or stroke and upper limb impairment. The study required 29 visits over 22 weeks and was divided into three parts: orthotic fitting, therapy/training (9 weeks), and home use (9 weeks). Therapeutic and functional benefits were evaluated every 2 to 3 weeks over 18 weeks using simple, short clinical tests.
Ischaemic stroke is a major cause of death and disability worldwide. In patients with recent stroke, the 18F-fluoride positron emission tomography-computed tomography highlights high-risk culprit carotid plaque and is more discriminatory than 18F-fluorodeoxyglucose. Using hybrid positron emission tomography-magnetic resonance imaging investigators propose to build upon these findings by prospectively assessing 18F-fluoride uptake in a broad range of patients with acute transient ischaemic attack or ischaemic stroke. Investigators will specifically examine the association of 18F-fluoride uptake with multiparametric magnetic resonance imaging assessments of atherosclerotic plaque, especially the role of thrombus and lipid. Finally, using transcranial Doppler and diffusion-weighted magnetic resonance brain imaging, an assessment of the functional consequences of 18F-fluoride-positive atherosclerotic plaque will be performed. If successful, this technique has a number of valuable translational applications including the better selection of patients for carotid intervention.
Ischaemic stroke is a major cause of death and disability worldwide. In patients with recent stroke, the 18F-fluoride positron emission tomography-computed tomography highlights high-risk culprit carotid plaque and is more discriminatory than 18F-fluorodeoxyglucose. Using hybrid positron emission tomography-magnetic resonance imaging investigators propose to build upon these findings by prospectively assessing 18F-fluoride uptake in a broad range of patients with acute transient ischaemic attack or ischaemic stroke. Investigators will specifically examine the association of 18F-fluoride uptake with multiparametric magnetic resonance imaging assessments of atherosclerotic plaque, especially the role of thrombus and lipid. Finally, using transcranial Doppler and diffusion-weighted magnetic resonance brain imaging, an assessment of the functional consequences of 18F-fluoride-positive atherosclerotic plaque will be performed. If successful, this technique has a number of valuable translational applications including the better selection of patients for carotid intervention.
During general anaesthesia, pulmonary atelectasis has been shown to occur in 85 to 90% of patient. Pulmonary atelectasis increases occurrence of postoperative pulmonary complication including pneumoniae. Pulmonary atelectasis can be prevented or reversed by alveolar recruitment manoeuvres (ARM). Two methods for ARMs have been described. A sustained continuous positive airway pressure (CPAP) or a stepwise increase in PEEP.The transient increase in intrathoracic pressure during ARMs decreases venous return and increases pulmonary vascular resistance. This result in a decrease in right and left ventricular stroke volume (SV). Finally, the deleterious hemodynamic effects of ARMs may be exacerbated by hypovolemia, heart failure, and in patients with chronic treatment wich impedes cardiovascular responses to hypovolemia. At our best knowledge, there is no study which compared the hemodynamic effects of ARM using sustained CPAP or stepwise increase in PEEP. Consequently, the present study was designed to examine the hemodynamic effects of 2 ARM methods in anesthetized patients.