Active clinical trials for "Brain Injuries"

The purpose of this study is to determine the early effects of transcranial direct current stimulation (tDCS) in patients with mild traumatic brain injury and persistent post concussion syndrome(PPCS) with cognitive deficits in long term episodic memory and executive function(inhibitory control).

Damage to the pituitary gland is a frequently overlooked but potentially important complication of traumatic brain injury (TBI). Disorders of the pituitary gland can cause dysfunction of the thyroid, adrenals, ovaries and testes. These disorders may occur immediately or several months after TBI, may delay recovery and may have a significant negative impact on quality of life. TBI is the leading cause of disability and major permanent functional impairment among adults under 45 years of age. Hormonal deficits may contribute to common symptoms experienced by TBI survivors such as fatigue, poor concentration, depression and low exercise capacity. However, the association between hormonal deficits and disability remains uncertain. The primary objective of this pilot study is to assess the feasibility of a larger study that will evaluate the impact of pituitary disorders on neurological disability and functional recovery. The results of this study will provide key findings in the impact of pituitary disorders following TBI, which is a mandatory step prior testing the effect of hormonal replacement therapy in this population in costly clinical trials. If no relationship between pituitary disorders and disability is observed, the investigators' findings will prevent unnecessary, time-consuming and costly hormonal screening and will discourage potentially harmful hormonal therapy.

Many patients suffer from a topographical disorientation after a traumatic brain injury. Virtual Reality settings allow us to develop navigational cues, in order to rehabilitate patients or to help them in daily life. Some visual and auditory cues have proved efficient in helping patients navigating in a virtual environment but when administered separately, they never enabled patients to obtain a similar navigation performance as healthy controls. Moreover, the effect of the combination between visual and auditory cues has never been studied before. The objective of the present study is to determine if the combination between visual and auditory cues improve spatial navigation and memory of patients with a traumatic brain injury. Therefore, the investigators intend to include in this prospective randomized study 45 patients who have had a moderate or severe traumatic brain injury and 20 healthy controls. Participants will have to reproduce actively with a joystick three different paths including 6 intersections that they have previously seen on a computer screen. One path will be done without cues, one with visual or auditory cues, and one with combined cues (visual+auditory). The order of the paths will be randomized. Auditory cues consist of beeping sounds indicating the direction at each intersection. Visual cues consist of salient landmarks (red and blinking) positioning at each intersection. The main judgment criterion will be the number of trajectory mistakes during the path reproduction (/6). The secondary judgment criteria will be : time of navigation, memory of the landmarks, the route and the survey of the virtual environment. The confirmation of the help given by the combined cues could further allow the patients to use them in rehabilitation or in real life using augmented reality.

The general objective of the comaScore project is to provide an external validation of the accuracy of the comaScore, a score derived from magnetic resonance imaging (MRI), to predict 1 year outcome of patients unresponsive to simple orders after traumatic brain injury (TBI), aneurysmal subarachnoid hemorrhages (aSAH) and cardiac arrest (CA) in the day 7 - day 45 period post brain injury.

The aim of this study is to explore the relationship between brain MRI-metrics and hand function observed in children with cerebral palsy (CP),compared between baseline and the third month, and thus determine the early MRI-based neuroimaging predictor of clinical improvement following therapy in children with CP.

The purpose of this study is to understand the physiology of connectivity between cortical regions in the human brain in healthy participants and in patients with white matter lesions. Specifically, the investigators will examine the effects of paired associative stimulation (PAS) which consists in delivering brief (< 1 ms) current pulses separated by a short millisecond-level time interval ("asynchrony") to two cortical areas. The used techniques are all non-invasive and considered safe in humans: transcranial magnetic stimulation (TMS), electroencephalography (EEG), magnetic resonance imaging (MRI), and functional MRI (fMRI). Based on prior literature in animals and human studies, it is hypothesized that PAS may increase or decrease effective connectivity between the stimulated areas depending on the asynchrony value. The main outcome measure is source-resolved EEG responses evoked by single-pulse TMS; this is a more direct measure of neuronal changes occurring at the targeted cortical area than motor evoked potentials (MEPs) or sensor-level EEG responses used in previous studies.

Patients who have a functioning intracranial pressure-monitoring device (either a subarachnoid bolt, or an intraventricular catheter) in place, and are either sedated, intubated, and mechanically ventilated (i.e. in the NNICU), or are scheduled to undergo an operation or interventional neuroradiological procedure at the University of Virginia. Patients with a contraindication to TTE will be excluded. For patients in the NNICU, basic hemodynamic variables (systemic blood pressure, central venous pressure, etc.) will be collected. In addition, left ventricular performance (including estimates of LVEDV, LVESV, EF, FAC, and SV) will be assessed using TTE. Once these baseline data are recorded, the ITPR will be inserted in the ventilator circuit and activated to provide either -5 mm Hg or -9 mm Hg endotracheal rube pressure (ETP) (based on a randomization scheme). After the ITPR has been active for at least five minutes, the same intracranial, hemodynamic, and TTE data obtained above will be gathered. The ITPR will then be turned off for five minutes, and intracranial, hemodynamic, and TTE data will again be recorded. The ITPR will be activated a second time (-9 mm Hg or -5 mm Hg ETP, i.e. whichever value was not used previously), and after five minutes of use data will be recorded again. The ITPR will then be disconnected, data will be collected after waiting two minutes, and no further interventions will be made. ABG's will be obtained before and during the use of the device at each setting. This is a proof of concept/feasibility study designed to test the primary hypothesis that use of the ITPR will result in decreased intracranial pressure and increased cerebral perfusion pressure. The effect of the ITPR on secondary indicators of cardiac performance will also be examined. These include but are not limited estimates of ventricular end diastolic volume and pressure (LVEDV/P), ejection fraction (EF), left ventricular end systolic volume and pressure (LVESV/P), fractional area change (FAC), all of which will be assessed by transthoracic echocardiography (TTE) or transesophageal echocardiography (TEE).

The purpose of this study is to determine whether learning styles are effective in the treatment of traumatic brain injury (TBI) in an educational environment.

This study evaluates the feasibility of an experimental protocol that combines advanced multi-modal imaging of the brain with clinical and behavioural scales to characterise the neural, behavioural, and clinical effects of transcranial direct current stimulation (tDCS) for rehabilitation in PDOC

This study aims to develop a integrated predictive model based on serum biomarkers, HRV, and an innovative computerized classifier output, to predict the patient long term neurological outcome after a moderate or severe TBI in children.