Not Yet RecruitingNot Applicable

Optimization and Validation of Electric Acoustic Stimulation (EAS) Mapping as a Function of Residual Hearing After CI-Implantation

12 participantsStarted 2026-05-01

Plain-language summary

The aim of this clinical study is to investigate how the fitting of an EAS (electrical acoustic stimulation) based on electrocochleography (ECochG) thresholds compares to fitting based on pure tone audiogram thresholds in terms of speech intelligibility in quiet and noise. The personal feedback from the study participants regarding the question of better fitting and the resulting sound quality should also be included in the analysis.

Who can participate

Age range18 Years – 85 Years

SexALL

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Inclusion criteria

✓. Patients aged between 18-85 years.
✓. Cochlear Implant (CI) candidates with measurable post-operative low-frequency residual hearing (125Hz \<65dB, 250Hz \<65dB, 500Hz \<65dB).
✓. Only patients with MED-EL EAS.
✓. Written informed consent must be obtained prior to study start.

Exclusion criteria

✕. Patients with cognitive impairments who, as a result, lack the capacity to make decisions.
✕. Uncooperative patients regarding pure tone audiometry thresholds measurements.
✕. Morbus Menière or intracochlear/ vestibular schwannoma

What they're measuring

Speech Recognition Threshold (SRT50)

Timeframe: Three months after EAS fitting

Trial details

NCT IDNCT07476079

SponsorLuzerner Kantonsspital

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2027-11-01

Contact for this trial

Armina Kreuzer, Dr.

+41 205 50 59 armina.kreuzer@luks.ch

View on ClinicalTrials.gov More Fitting Methods by EAS Patients trials