Audiovestibular Function Deficits in Vestibular Schwannoma

摘要: Introduction. Vestibular schwannomas (VS) are benign tumours of the vestibular nerve and can lead to hearing loss, tinnitus, vertigo, facial palsy, brainstem compression. Audiovestibular diagnostic tests essential for detection treatment planning. Methods. Medline was used perform a systematic literature review with regard how audiovestibular test parameters correlate symptoms, tumour size, location. Results. The auditory response be diagnose retrocochlear lesions caused by VS. Since loss correlates poorly lesion is probably not only cause loss. Also cochlear mechanisms seem play role. This revealed abnormal otoacoustic emissions, despite normal ABR new MRI techniques which have demonstrated endolymphatic hydrops inner ear. Caloric head impulse show frequency specific dynamics evoked myogenic potentials may help identify location regarding involved parts. Conclusion. In order preserve function in VS, it important stop growth avoid degenerative changes A detailed neurotological workup helps VS all sizes also provide useful prognostic information.