Feasibility of Auditory Nerve Test System for Optimization of Simultaneous Translabyrinthine Vestibular Schwannoma Resection With Cochlear Implantation
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.
• Vestibular schwannoma (sporadic or Neurofibromastosis Type-2)
• 12 years of age or older
• Tumor size \< 2.5 cm
• Non-serviceable ipsilateral hearing
• No prior cochlear implant or auditory brainstem implant use
• No prior microsurgery or stereotactic radiation for this tumor
• Patient decision and medical clearance for a translabyrinthine approach for tumor resection
• Willingness to comply with research protocol
• Reasonable expectations of cochlear implant performance
• Auditory nerve integrity visually confirmed following tumor resection