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Use of Frequency Compression in Severe-profound Hearing Loss Adults

NCT ID: NCT04623112

Last Updated: 2020-11-10

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

27 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-04-30

Study Completion Date

2015-06-30

Brief Summary

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The purpose of this study is to investigate the functional benefits of frequency compression vs no frequency compression or fitted to hearing loss in severe-profound hearing impaired adults with high frequency hearing losses. Thus, assessing whether hearing aids for this patient population can be adapted to improve speech perception.

Detailed Description

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Frequency compression is a feature available on some digital hearing aids, which is aimed at increasing the audibility of high frequency sounds. It works by taking sounds above a fixed start frequency and compresses it into lower frequencies where residual hearing is better.

Conditions

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Frequency Compression Severe-profound Hearing Impairment

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

SINGLE

Participants

Study Groups

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FC Deactivated

Frequency Compression feature on hearing aids is deactivated for 4 weeks

Group Type OTHER

Hearing aid feature: Frequency Compression

Intervention Type DEVICE

FC Deactivated/Activated \& set to default/Activated \& set to hearing loss

FC activated & set to default

Frequency compression feature activated on hearing aids and set to default software settings for 4 weeks.

Group Type EXPERIMENTAL

Hearing aid feature: Frequency Compression

Intervention Type DEVICE

FC Deactivated/Activated \& set to default/Activated \& set to hearing loss

FC activated and set to hearing loss

Frequency Compression feature activated on hearing aids and set to hearing loss cut-off for 4 weeks

Group Type EXPERIMENTAL

Hearing aid feature: Frequency Compression

Intervention Type DEVICE

FC Deactivated/Activated \& set to default/Activated \& set to hearing loss

Interventions

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Hearing aid feature: Frequency Compression

FC Deactivated/Activated \& set to default/Activated \& set to hearing loss

Intervention Type DEVICE

Other Intervention Names

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Non-linear Frequency Compression

Eligibility Criteria

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Inclusion Criteria

1. Participants must be over 18 years of age- This study is looking at the use of frequency compression \& its effects of speech perception in adults.
2. No ear surgery that would make it impossible to fit a hearing aid- To ensure limited confounding variables.
3. No history of ear surgery within the last 12 months- To ensure limited confounding variables.
4. No history of ear infection(s) within the last 6 months- To ensure no contraindications and limited confounding variables to testing.
5. No otoscopic abnormality making it impossible to fit a hearing aid- To ensure no contraindications to testing.
6. Bilateral severe-profound hearing impairment with air conduction thresholds \>71dBHL within the frequency range of 250Hz to 4 kHz- To analyse the effects of frequency compression on speech perception within this patient population.
7. Post lingual deafness, with good spoken English- To ensure reliability of speech testing.
8. Previous bilateral digital hearing aid experience (6+ months)- To ensure limited confounding variables.
9. Written consent required.

Exclusion Criteria

1. Participants under the age of 18 years.
2. History of ear surgery making it impossible to fit a hearing aid.
3. History of ear surgery within the last 12 months.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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University College, London

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Deborah Vickers, Phd

Role: STUDY_CHAIR

UCL Ear Institute

Other Identifiers

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15/0217

Identifier Type: -

Identifier Source: org_study_id