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Spots Global Cancer Trial Database for Intraoperative Electrically-evoked ABRs in Patients Undergoing Vestibular Schwannoma Surgery

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Trial Identification

Brief Title: Intraoperative Electrically-evoked ABRs in Patients Undergoing Vestibular Schwannoma Surgery

Official Title: Intraoperative Electrically-evoked ABRs in Patients Undergoing Vestibular Schwannoma Surgery

Study ID: NCT05248113

Conditions

Deafness

Study Description

Brief Summary: This is a study of the feasibility of activating the auditory system by an electrode in direct contact with the cochlear nerve.

Detailed Description: This is a feasibility study being conducted prior to development of a penetrating cochlear nerve stimulating electrode. Experiments will be conducted in patients who are undergoing surgery for resection of a vestibular schwannoma (VS). In the normal course of such a surgical procedure, the cochlear nerve is exposed and, in many cases, the cochlear nerve is resected or function of the cochlear nerve is otherwise disrupted. Typically, recording electrodes are placed on the scalp for the purpose of recording sound-evoked auditory brainstem responses (ABRs), which serve as a measure of the functional status of the cochlear nerve. In this intraoperative experimental procedure, a conventional bipolar nerve stimulating electrode will be placed in contact with the cochlear nerve and the nerve will be stimulated with electrical pulses. Activation of the auditory system by the electrical pulses will be evaluated by measurement of electrically-evoked ABRs, using the same scalp electrodes that are typically used for measurement of sound-evoked ABRs. The cochlear-nerve stimulating electrode will be in place only during the actual intraoperative test. No device will remain in the patient. The intraoperative experimental procedure is not intended to as a therapeutic measure for the patient's VS.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: ALL

Healthy Volunteers: No

Locations

UC Irvine Health, Pavilion II, Orange, California, United States

Contact Details

Name: Harrison M Lin, MD

Affiliation: University of California, Irvine

Role: PRINCIPAL_INVESTIGATOR

Name: John C Middlebrooks, PhD

Affiliation: University of California, Irvine

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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