Cochlear Implantation After Gamma Knife Radiosurgery with EABR and Correlation to Postoperative Hearing Results - a Pilot Study

November 21, 2024 updated by: Christoph Arnoldner
Patients undergoing cochlear implantation after radio surgery for vestibular schwannoma will be included in the study. Patients will undergo preoperative and intraoperative eABR measurement. Correlations to postoperative hearing results will be drawn.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Patients treated with radio surgery for vestibular schwannoma often suffer from hearing loss. Especially when the contralateral side has progressive hearing loss assessment if cochlear implantation is feasible, should be carried out. Patients undergo extensive audiometric testing. Additionally, patients will undergo preoperative eABR. Intraoperatively eABR is carried out and cochlear implantation is performed. The eABR results will be correlated with postoperative hearing. EABR measurements are not part of the study. The results of eBAR will be categorized in three groups (good response, weak response and no response). The eABR results will then be correlated to speech understanding with cochlear implants measured with Freiburger monosyllables test.

Study Type

Observational

Enrollment (Estimated)

8

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients after radio surgery for vestibular schwannoma undergoing cochlear implantation

Description

Inclusion Criteria:

  • Patients who have undergone radio surgery for vestibular schwannoma
  • Patients wanting cochlear implantation for hearing rehabilitation

Exclusion Criteria:

  • Patients not wanting to participate in the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
eABR correlation
Time Frame: 2 years
eABR is correlated with postoperative hearing results eABR will be divided in three categories - good response, weak response, no response Hearing results will be measured with speech understanding in Freiburg monosyllables word test which is measured in % of monosyllables understanding at 65 and 80dB
2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Christoph Arnoldner

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

August 1, 2018

Primary Completion (Estimated)

July 31, 2026

Study Completion (Estimated)

October 30, 2026

Study Registration Dates

First Submitted

November 3, 2018

First Submitted That Met QC Criteria

November 16, 2018

First Posted (Actual)

November 19, 2018

Study Record Updates

Last Update Posted (Estimated)

November 25, 2024

Last Update Submitted That Met QC Criteria

November 21, 2024

Last Verified

November 1, 2024

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 1564/2018

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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