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Scientists listen in on inner ear during cochlear implant surgery

NCT ID NCT03685461

Knowledge-focused Sponsor: Medical College of Wisconsin Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at how the inner ear responds to sound during and after cochlear implant surgery in 88 participants. Researchers used a noninvasive test called electrocochleography to measure electrical activity in the cochlea. The goal was to see if these measurements could help predict how well the implant will work after surgery.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this research could help doctors better predict how well a cochlear implant will work after surgery.
What could go wrong
This is an observational study, not a treatment trial. It only gathers information and may not lead to direct improvements for patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

88 people

The number who actually took part.

Started

Oct 2018

Finished

Dec 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

1 year and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Pure-tone audiometry thresholds ≤80 dB HL at 500 Hz * One year of age and older * Normal candidacy requirements for cochlear implantation met * No cochlear abnormality that might prevent full insertion of the CI electrode array * No additional handicap that would prevent study procedures from being followed Exclusion Criteria: * Chronic otitis media * Malformed cochlea * Auditory neuropathy spectrum disorder (ANSD) * Presence of ear tubes * Prior middle ear surgeries or trauma including disruption of ossicles

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Conditions

The condition(s) this trial relates to.

hearing loss disorder sensorineural hearing loss disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Cochlear implant Hearing loss

Contacts and locations

Locations

  • Medical College of Wisconsin

    Milwaukee, Wisconsin, 53226, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.