View clinical trials related to Neuroma, Acoustic.
Filter by:Patients undergoing surgery of a vestibular schwannoma will be included in the study. Patients will receive triamcinolone acetonide 24h before surgery. During translabyrinthine surgery cochlear perilymph, perilymph from the semicircular canal and cerebrospinal fluid will be taken and analyzed for triamcinolone content. In patients undergoing middle fossa or retrosigmoid resection only cerebrospinal fluid will be taken and analyzed for triamcinolone acetonide level.
The purpose of this study is to see if there is benefit to using an IV contrast called AK-Fluor® and a microscope filter called YELLOW560 when surgically removing a vestibular schwannoma, Meningioma, Head and Neck Paraganglioma, or Head and Neck Schwannoma.
The Auditory Nerve Test System (ANTS) is a novel device that stimulates the auditory nerve much like a cochlear implant. The purpose of this study is to demonstrate feasibility of the ANTS during translabyrinthine surgery for vestibular schwannoma resection. If the auditory nerve is kept intact, then the patients will also receive a cochlear implant at the same time potentially alleviating the morbidities caused by a vestibular schwannoma and asymmetric sensorineural hearing loss.
compare the operating condition of two different levels of muscle relaxation on facial nerve monitoring using transcranial motor evocked potential in CPA surgery . - To Estimate End to start facial nerve MEP amplitude ratio - To determine the effect of neuromuscular relaxant degrees on recovery and - Assessment of propofol doses needed for enhancement of early recovery and ambulation.
This study will address the feasibility of simultaneous cochlear implantation during resection of a vestibular schwannoma.
Vestibular schwannoma is a benign tumor located on the vestibular nerve. Patient could present dizziness symptoms cause to the tumor, and at least after the treatment by gamaknife radiosurgery or microsurgery resection. Only few studies keep the interest about dizziness symptoms and treatment modality in vestibular schwannoma. In the study dizziness symptoms were compared before and after the treatment of vestibular schwannoma by radiosurgery gammaknife or microsurgery resection. 2 scales were used : dizziness handicap inventory (DHI) and dizziness functionnal scale (AAO).
Intraoperative Monitoring of Heart rate variability, Blood pressure variability, Baroreceptorsensivity etc.
The aim of this study is to assess effect of psychiatric profile on visual sensitivity and overall health status in patients who underwent surgery for vestibular schwannoma and were prehabituated by chemical vestibular ablation.
Unilateral vestibular lesions are frequent and disabling pathologies causing a set of oculomotor, postural and perceptual symptoms. These symptoms reduce over time according to a vestibular compensation. However, vestibular compensation should be considered as a set of sub-processes whose duration and recovery level differ. Indeed, after a unilateral vestibular loss, some functions remain asymmetrical as a long-term effect, and these disorders may be observed among patients with no functional complaints. Balance disorders may persist in some patients. The equilibration consists in handling real-time a considerable amount of information coming from the environment and the subject himself, allowing an adaptation of the position and movements of his body to satisfy the needs of posture, balance and orientation. This information comes mainly from the vision, the vestibule and the somesthesic system. It is pre-treated and harmonized in the brainstem, before being transmitted to the higher brain centres. Brain centers thus learn about peripheral conditions. According to these and the project of the movement, brain centers address in response orders to ophtalmological and motor effectors ensuring look, posture and balance to be provided. The eye is a cornerstone of the balancing system through the retina, an environmental sensor, and its extraocular muscles, effectors of the system. The aim of this study is to assess the effects of acute unilateral vestibular loss on visual abilities evaluated by orthoptic balance in patients who presented acute unilateral vestibular loss by surgical deafferentation (removal of vestibular schwannoma, vestibular neurotomy or surgical labyrinthectomy for Meniere's disease), during the early phase and decline of vestibular compensation. Our secondary objective is to evaluate the effect of a pre-existing anomaly of the visual abilities evaluated by orthoptic assessment on the vestibular compensation capacities. All in all, this study seems crucial to improve the management of patients with unilateral vestibular dysfunction and contribute to improving their clinical management. As a standardized management of these patients, an audio-vestibular evaluation will be performed before surgery (-1D), after acute unilateral vestibular loss at the early stage (+7D), and then after vestibular compensation (+2M) as well as an orthoptic evaluation. A good tolerance of the orthoptic evaluation is expected in this surgical context.
Whole exome sequencing (WES) of 50 sporadic and 50 Neurofibromatosis Type2 (NF2)-associated vestibularis schwannomas (VS) in children and young adults. The aim is to gain insight into the complete genome of the NF2 associated VS compared to sporadic VS (control group). These data are to be correlated with the clinic, ie the auditory function (audiogram, acoustically evoked potentials) and the clinical picture as well as the tumor growth rate and general data such as sex, age, side, etc.