Hearing LossNCT03142100
Combined Acoustic and Electric Hearing (CI/HA) in Adult Bimodal Users Using a HA With a Bimodal Fitting Formula
An observational study of Hearing Loss, run by Bnai Zion Medical Center.
Trial summary
Introduction: Bilateral-bimodal users may benefit from bilateral-binaural and a bimodal effect . The two modes of stimulation complement each other and may overcome the limitation of electric hearing alone. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Hearing Loss
- What is being tested?
- cochlear implants and hearing aids
- Type of treatment
- Medical device
- How many people
- 40 participants
- Where
- No sites listed yet
- Study dates
- 15 Jun 2017to 15 Jun 2019
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: The study will include 20 Hebrew and 20 Arabic speakers' adult bilateral-bimodal users that their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz, who use their hearing aids for at least 75% of their waking hours.
Who may be able to join
- Two groups, ideally each of 20 experienced adult bimodal users will be studied: one Arabic speaking and the other Hebrew speaking.
- Inclusion criteria:
- Regular adults bimodal users (at least 18 years of age) having continuous use of both CI and hearing instrument for 75% of waking hours.
- Their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz.
- All participants will have stable CI map and acquired at least twelve month's experience using a CI and HA in combination using the Naida CI sound processor
- Participants will be first language speakers of either Arabic or Hebrew
- Participants will be required to demonstrate highly reliable responses, and will be able to understand recorded speech material in the presence of competing noise, achieving at least 50% correct for sentences when the signal-to-noise-ratio is +20 dB.
- No participant shall have any additional physical or cognitive problem that might interfere with their ability to participate in the study.
Who cannot join
- -
About this study
Official title: Assessment of the Contribution of Combined Acoustic Hearing Via a Hearing Aid and Electric Hearing Via a Cochlear Implant in Adult Bimodal Users Following Using a HA With a Dedicated Bimodal Fitting Formula
Introduction: Bilateral-bimodal users may benefit from bilateral-binaural and a bimodal effect . The two modes of stimulation complement each other and may overcome the limitation of electric hearing alone. However, alongside the expected benefits of having two hearing systems in bilateral bimodal hearing, there are several inherent mismatches in combing two different stimulation methods, which may negatively impact the processing of the binaural cues.
Aim: To determine whether bimodal listening with a hearing aid programmed using a dedicated bimodal fitting formula, which aligns the frequency response, loudness growth functions, and automatic gain control (AGC) characteristics between the cochlear implant speech processor and the hearing aid brings additional benefit over bimodal listening with the subject's clinical hearing instrument via the use of using a comprehensive battery of speech perception tests aimed at different aspects of binaural hearing as well as the contribution of the unique bimodal complementary effect. A secondary goal is to identify the tests that are best suited to predicting and evaluating bimodal benefit.
Method: The study will include 20 Hebrew and 20 Arabic speakers' adult bilateral-bimodal users that their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz, who use their hearing aids for at least 75% of their waking hours. The added benefit of the hearing aid programmed using a dedicated bimodal fitting formula will be evaluated using six task-specific tests designed to sensitively assess the bilateral-binaural and bimodal complementary effects using roving speech and noise and different types of background noises (maskers), pitch-related task and subjective questionnaire. Participants will be tested twice in quick succession, at two-weekly intervals, in establishing a baseline score with their clinical HAs. Then participants will be tested again twice in quick succession, at two-weekly intervals following three month experience with the HA fitted with the bimodal fitting formula. All tests will be administered the CI/HA listening condition.
Read the detailed description
Introduction: Bilateral-bimodal hearing, cochlear implant on one ear and hearing aid on the other ear (CI/HA) may benefit from bilateral-binaural effects as a result of using two hearing systems, and a bimodal effect as a result of using two modes of stimulation, namely acoustic via a HA and electrical via a CI. The two modes of stimulation complement each other and may overcome the limitation of electric hearing alone. However, alongside the expected benefits of having two hearing systems in bilateral bimodal hearing, there are several inherent mismatches in combing two different stimulation methods, which may negatively impact the processing of the binaural cues. These mismatches include mismatch in the incoming speech signal timing; mismatch in pitch balance between two devices, mismatch in the frequency range conferred, and mismatch in the frequency range conveyed to a specific location in the cochlea by the cochlear implant and to a different location in the contra-lateral cochlea by the hearing aid.
Aim: To determine whether bimodal listening with a hearing aid programmed using a dedicated bimodal fitting formula, which aligns the frequency response, loudness growth functions, and automatic gain control (AGC) characteristics between the cochlear implant speech processor and the hearing aid brings additional benefit over bimodal listening with the subject's clinical hearing instrument via the use of using a comprehensive battery of speech perception tests aimed at different aspects of binaural hearing as well as the contribution of the unique bimodal complementary effect. A secondary goal is to identify the tests that are best suited to predicting and evaluating bimodal benefit.
Method: The study will include 20 Hebrew and 20 Arabic speakers' adult bilateral-bimodal users that their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz, who use their hearing aids for at least 75% of their waking hours. The added benefit of the hearing aid programmed using a dedicated bimodal fitting formula will be evaluated using six task-specific tests designed to sensitively assess the bilateral-binaural and bimodal complementary effects using roving speech and noise and different types of background noises (maskers), pitch-related task and subjective questionnaire. Participants will be tested twice in quick succession, at two-weekly intervals, in establishing a baseline score with their clinical HAs. Then participants will be tested again twice in quick succession, at two-weekly intervals following three month experience with the HA fitted with the bimodal fitting formula. All tests will be administered the CI/HA listening condition.
Data analysis: Speech perception test results and self-rating questionnaire scores will be analyzed by repeated measure analysis of variance. The difference between the two moods of bimodal listening (clinical HA versus HA fitted by the bimodal formula) will be evaluated. Correlation between audiological variables aided and unaided hearing thresholds in the non-implanted ear and the bilateral-bimodal benefit will be examined as well.
- Conditions
- Hearing Loss
- Being tested
- cochlear implants and hearing aids
- Medical subject headings
- Hearing Loss
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
cochlear implants and hearing aidsDevice
speech perception tests and bimodal fitting
| Study group | Role | What they receive |
|---|---|---|
| Hebrew speaking participants | Hebrew speaking bilateral-bimodal users will be assessed using cochlear implants and hearing aids Receives: Device: cochlear implants and hearing aids | |
| Arabic speaking participants | Arabic speaking bilateral-bimodal users will be assessed using cochlear implants and hearing aids Receives: Device: cochlear implants and hearing aids |
What is being measured
The primary outcome is the main question the study is designed to answer.
outcome measure: the speech perception test battery and questionnaire scores will be calculated as follows: [(CI+ HA (old version)] - [ CI+HA (new dedicated prescription)].
The added benefit of the hearing aid programmed using a dedicated bimodal fitting formula will be evaluated using six task-specific tests designed to sensitively assess the bilateral-binaural and bimodal complementary effects using roving speech and noise and different types of background noises (maskers), pitch-related task and subjective questionnaire. Participants will be tested twice in quick succession, at two-weekly intervals, in establishing a baseline score with their clinical HAs. Then participants will be tested again twice in quick succession, at two-weekly intervals following three month experience with the HA fitted with the bimodal fitting formula. All tests will be administered in the CI/HA listening condition. Comparison between these test results will estimate the added benefit of the dedicated bimodal formula.
Measured: about 2 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted5 May 2017
- Study start15 Jun 2017 (estimated)
- Primary completion1 Apr 2019 (estimated)
- Study completion15 Jun 2019 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Hearing LossStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Bnai Zion Medical Center
- Sponsor type
- Other government
- Responsible party
- Principal investigator, MICAL.LUNTZ, Bnai Zion Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03142100
- Sponsor's protocol ID
- 0097-16
- Status last verified
- May 2017
- First submitted
- 19 Feb 2017
- Last updated
- 5 May 2017
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 5 May 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Assessment of the Contribution of Combined Acoustic Hearing Via a Hearing Aid and Electric Hearing Via a Cochlear Implant in Adult Bimodal Users Following Using a HA With a Dedicated Bimodal Fitting Formula
- ClinicalTrials.gov ID
- NCT03142100
- Acronym / sponsor ID
- 0097-16
- Conditions
- Hearing Loss
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Bnai Zion Medical CenterOther government
- Study start
- 15 Jun 2017 (estimated)
- Primary completion
- 1 Apr 2019 (estimated)
- Study completion
- 15 Jun 2019 (estimated)
- First posted
- 5 May 2017 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Introduction: Bilateral-bimodal users may benefit from bilateral-binaural and a bimodal effect . The two modes of stimulation complement each other and may overcome the limitation of electric hearing alone. However, alongside the expected benefits of having two hearing systems in bilateral bimodal hearing, there are several inherent mismatches in combing two different stimulation methods, which may negatively impact the processing of the binaural cues.
Aim: To determine whether bimodal listening with a hearing aid programmed using a dedicated bimodal fitting formula, which aligns the frequency response, loudness growth functions, and automatic gain control (AGC) characteristics between the cochlear implant speech processor and the hearing aid brings additional benefit over bimodal listening with the subject's clinical hearing instrument via the use of using a comprehensive battery of speech perception tests aimed at different aspects of binaural hearing as well as the contribution of the unique bimodal complementary effect. A secondary goal is to identify the tests that are best suited to predicting and evaluating bimodal benefit.
Method: The study will include 20 Hebrew and 20 Arabic speakers' adult bilateral-bimodal users that their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz, who use their hearing aids for at least 75% of their waking hours. The added benefit of the hearing aid programmed using a dedicated bimodal fitting formula will be evaluated using six task-specific tests designed to sensitively assess the bilateral-binaural and bimodal complementary effects using roving speech and noise and different types of background noises (maskers), pitch-related task and subjective questionnaire. Participants will be tested twice in quick succession, at two-weekly intervals, in establishing a baseline score with their clinical HAs. Then participants will be tested again twice in quick succession, at two-weekly intervals following three month experience with the HA fitted with the bimodal fitting formula. All tests will be administered the CI/HA listening condition.
Detailed description
Introduction: Bilateral-bimodal hearing, cochlear implant on one ear and hearing aid on the other ear (CI/HA) may benefit from bilateral-binaural effects as a result of using two hearing systems, and a bimodal effect as a result of using two modes of stimulation, namely acoustic via a HA and electrical via a CI. The two modes of stimulation complement each other and may overcome the limitation of electric hearing alone. However, alongside the expected benefits of having two hearing systems in bilateral bimodal hearing, there are several inherent mismatches in combing two different stimulation methods, which may negatively impact the processing of the binaural cues. These mismatches include mismatch in the incoming speech signal timing; mismatch in pitch balance between two devices, mismatch in the frequency range conferred, and mismatch in the frequency range conveyed to a specific location in the cochlea by the cochlear implant and to a different location in the contra-lateral cochlea by the hearing aid.
Aim: To determine whether bimodal listening with a hearing aid programmed using a dedicated bimodal fitting formula, which aligns the frequency response, loudness growth functions, and automatic gain control (AGC) characteristics between the cochlear implant speech processor and the hearing aid brings additional benefit over bimodal listening with the subject's clinical hearing instrument via the use of using a comprehensive battery of speech perception tests aimed at different aspects of binaural hearing as well as the contribution of the unique bimodal complementary effect. A secondary goal is to identify the tests that are best suited to predicting and evaluating bimodal benefit.
Method: The study will include 20 Hebrew and 20 Arabic speakers' adult bilateral-bimodal users that their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz, who use their hearing aids for at least 75% of their waking hours. The added benefit of the hearing aid programmed using a dedicated bimodal fitting formula will be evaluated using six task-specific tests designed to sensitively assess the bilateral-binaural and bimodal complementary effects using roving speech and noise and different types of background noises (maskers), pitch-related task and subjective questionnaire. Participants will be tested twice in quick succession, at two-weekly intervals, in establishing a baseline score with their clinical HAs. Then participants will be tested again twice in quick succession, at two-weekly intervals following three month experience with the HA fitted with the bimodal fitting formula. All tests will be administered the CI/HA listening condition.
Data analysis: Speech perception test results and self-rating questionnaire scores will be analyzed by repeated measure analysis of variance. The difference between the two moods of bimodal listening (clinical HA versus HA fitted by the bimodal formula) will be evaluated. Correlation between audiological variables aided and unaided hearing thresholds in the non-implanted ear and the bilateral-bimodal benefit will be examined as well.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Hebrew speaking participants | – | Device: cochlear implants and hearing aidsHebrew speaking bilateral-bimodal users will be assessed using cochlear implants and hearing aids |
| Arabic speaking participants | – | Device: cochlear implants and hearing aidsArabic speaking bilateral-bimodal users will be assessed using cochlear implants and hearing aids |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- The study will include 20 Hebrew and 20 Arabic speakers' adult bilateral-bimodal users that their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz, who use their hearing aids for at least 75% of their waking hours.
Key inclusion criteria (8 listed)
- Two groups, ideally each of 20 experienced adult bimodal users will be studied: one Arabic speaking and the other Hebrew speaking.
- Inclusion criteria:
- Regular adults bimodal users (at least 18 years of age) having continuous use of both CI and hearing instrument for 75% of waking hours.
- Their audiometric thresholds in the non implanted ear will be no worse than 75 dB HL at 250 and 85 dB HL at 500 Hz.
- All participants will have stable CI map and acquired at least twelve month's experience using a CI and HA in combination using the Naida CI sound processor
Key exclusion criteria (1 listed)
- -
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| cochlear implants and hearing aidsspeech perception tests and bimodal fitting | Device | Arabic speaking participants, Hebrew speaking participants |
Primary outcome
outcome measure: the speech perception test battery and questionnaire scores will be calculated as follows: [(CI+ HA (old version)] - [ CI+HA (new dedicated prescription)].
Time frame: about 2 months
The added benefit of the hearing aid programmed using a dedicated bimodal fitting formula will be evaluated using six task-specific tests designed to sensitively assess the bilateral-binaural and bimodal complementary effects using roving speech and noise and different types of background noises (maskers), pitch-related task and subjective questionnaire. Participants will be tested twice in quick succession, at two-weekly intervals, in establishing a baseline score with their clinical HAs. Then participants will be tested again twice in quick succession, at two-weekly intervals following three month experience with the HA fitted with the bimodal fitting formula. All tests will be administered in the CI/HA listening condition. Comparison between these test results will estimate the added benefit of the dedicated bimodal formula.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 May 2017.
- Individual participant dataSharing planned: Undecided
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Hearing Loss, run by Bnai Zion Medical Center.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 5 May 2017. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
outcome measure: the speech perception test battery and questionnaire scores will be calculated as follows: [(CI+ HA (old version)] - [ CI+HA (new dedicated prescription)]. (time frame: about 2 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 May 2017.