View clinical trials related to Stroke.
Filter by:To examine the feasibility of improving stroke patients' physical functional recovery and social participation through improving caregiver's care capability.
To evaluate the hypothesis that mechanical embolectomy with the Solitaire FR device is superior to medical management alone in achieving favorable outcome in the distribution of the modified Rankin Scale scores at 90 days in subjects presenting with acute large vessel ischemic stroke < 8 hours from symptom onset.
The overall objective of the study is to test whether the use of small electrical currents to stimulate proprioceptors of the upper limb has potential for improving robot-assisted upper-limb rehabilitation in stroke survivors.
It is known, that hypertension is the major risk factor of stroke and recurrent stroke. Blood pressure reduction - together with antithrombotics - remain crucial in stroke prevention. This pilot study will examine the effect of renal nerve denervation in patients with treatment resistant hypertension after ischemic stroke or DWI/DTI-verified stroke. With 24 hours blood pressure measurements the effect after renal nerve denervation is examined 1,3,6 and 12 months after the procedure.
Impaired arm and hand function is one of the most disabling and most common consequences of stroke. The Investigators have developed Contralaterally Controlled Functional Electrical Stimulation (CCFES), an innovative neuromuscular electrical stimulation (NMES) treatment for improving the recovery of hand function after stroke. The purpose of this study is to maximize the treatment effect of CCFES by adding stimulated elbow extension. The specific aims and hypotheses are as follows: AIM 1: Estimate the effect of Arm+Hand CCFES on upper limb motor impairment and activity limitation. Hypothesis 1: Stroke survivors treated with Arm+Hand CCFES have better outcomes on upper limb impairment and activity limitation measures than those treated with dose-matched Arm+Hand Cyclic NMES. AIM 2: Estimate the effect of adding stimulated elbow extension to Hand CCFES. Hypothesis 2: Stroke survivors treated with Arm+Hand CCFES will have greater reductions in upper limb impairment and activity limitation than those treated with Hand CCFES. AIM 3: Describe the relationship between treatment effect and time elapsed between stroke onset and start of treatment. Hypothesis 3: Patients who start Arm+Hand CCFES sooner after their stroke achieve better outcomes.
While baseline weakness is clearly an important factor that contributes to disability post stroke, neuromuscular fatigue (the acute reduction in force production) of the paretic musculature likely compounds strength deficits and further exacerbates disability. The proposed study aims to improve our understanding of the mechanisms of neuromuscular fatigue in people post stroke in order to optimize strength training. In healthy individuals, both central (neural) and peripheral (muscle) factors are determinants of neuromuscular fatigue, but preliminary data from our laboratory suggests a greater contribution of central components to neuromuscular fatigue in the paretic musculature. Although cortical pathways are clearly disrupted post stroke, it is likely that brainstem pathways, known to have neuromodulatory effects on spinal motor circuitry, are more involved in the sustaining of force in the paretic leg, compared to the non-paretic and control legs. Therefore, the purpose of this proposal is to examine the role of descending neuromodulatory pathways of the brainstem in neuromuscular fatigue post stroke (Aim 1) and to correlate brainstem-related changes in neuromuscular fatigue to walking function (Aim 2). The investigators propose that stroke survivors' decreased capability to sustain force overtime results from the diminished ability of spinal motoneurons to respond to brainstem neuromodulatory inputs (serotonin (5-HT) and norepinephrine (NE)). Aim 1 will quantify stroke-related decreases in motor output sensitivity to a 5-HT and NE reuptake inhibitor (SNRI), serotonin antagonist, or placebo during sub-maximal intermittent fatiguing knee extension contractions. If motoneurons are desensitized to descending monoamines in chronic stroke patients, then they will be less sensitive to the effects of drugs that increase monoamine levels. The investigators predict that in response to the SNRI or serotonin antagonist, the paretic leg will show less change in time to task failure and a smaller reduction in strength as compared to the non-paretic and control legs. For Aim 2, the investigators predict that stroke subjects with the highest walking function will demonstrate the greatest fatigue-related changes in response to the SNRI. This proposal adopts an innovative model of motor impairment post stroke by including the role of subcortical structures in neuromuscular fatigue.
The overall aim of the project is to gain insight in sensory deficits and recovery patterns in the upper limb post stroke and its association with brain lesion localisation. Furthermore, the investigators will identify associations of deficits in sensory modalities with upper limb impairments, activities and participation at different time points after stroke. Identification of the sensory deficits, along with further insights in their relation with objective neurophysiological and neuroanatomical measures will contribute to the amelioration of goal-setting for the rehabilitation of upper extremity function after stroke. These functions are indispensable during several daily activities as well in different sports and leisure activities. This project is an important step towards a better delineating of treatment interventions for the upper limb and to a better guiding of individual needs for post-stroke treatment in the future.
In clinical practice, intracranial pressure (ICP) represents a key parameter for diagnosing and treating several conditions. Physicians having to manage cases of head trauma, stroke and hydrocephalus need to assess the time course of ICP, yet they are often unwilling to implement invasive monitoring beyond the acute stage, on account of high septic risks. Standard techniques include direct ventricular manometry or measurement in the parenchyma with electronic or fiberoptic devices. Therefore, the design of non-invasive clinical methods for gaining access to pressure changes is an important challenge. Fluctuations of ICP are transmitted to the fluid spaces of the inner ear through the cochlear aqueduct. The Biophysics Laboratory (School of Medicine of Clermont-Ferrand) described that the intra-labyrinthic pressure modify the functional activities of the outer hair cells in the cochlea. Thereby, increases in ICP are transferred to increases in intra-cochlear pressure, which is detected as modifications in cochlear activities. Cochlear activities' recording are non-invasive and technically simple. A probe is gently inserted into the outer portion of the external ear canal. The objective of this study is to assess prospectively the accuracy and the precision of a new method for ICP monitoring (using cochlear activities) compared with invasive gold standard CSF pressure monitoring.
To test the usability and effectiveness of a robotic device, called the Robotic Gait Rehabilitation (RGR) Trainer, in (1) healthy subjects with no gait impairment and (2) patients with stroke with gait abnormalities secondary to impaired knee function.
Patient suffering a Transient Ischemic Attack (TIA) or stroke are subsequently at high risk of a new stroke, however, poor adherence to secondary prevention medications occurs frequently within this patient group. The purpose of this study is to evaluate whether a complex tailored pharmacist intervention will lead to increased adherence to secondary stroke prevention medications and less new stroke events when compared to a usual care group. Interventions focus on motivational interviewing, medication review and telephone follow up.