Efficacy of Cochlear Implantation in Adult Patients with Asymmetrical Hearing Loss: A Prospective multicenter study

Not Applicable

Conditions: Diseases of the ear and mastoid process

Registration Number: KCT0008959

Lead Sponsor: Ajou University Hospital

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: ot yet recruiting

Sex: All

Target Recruitment: 20

Inclusion Criteria

Adults aged 19 and older, up to 75 years of age, with asymmetric sensorineural hearing loss.
-Those whose worse ear has a pure-tone average (PTA) hearing threshold of PTA = 70dB at 500, 1000, 2000, and 4000 Hz, with an aided Speech Discrimination Score (SDS) of = 50% (at 60dB), and whose better ear has a hearing threshold of 40dB = PTA <70dB, with an aided SDS of = 80% (at 60dB).
-Individuals with post-lingual deafness (hearing loss acquired after language acquisition).
-Those for whom significant improvement in the hearing of the deaf ear through conventional hearing aids is not expected.
-No contraindications for general or local anesthesia.
-Patients who voluntarily agree to participate in the clinical study and provide written consent.

Exclusion Criteria

-Individuals who are illiterate, unable to read the informed consent document, or have difficulty comprehending the clinical trial due to mental disabilities or other reasons.
-Individuals with acquired hearing loss (especially if it is caused by sudden deafness, for which there is still a possibility of spontaneous recovery).
-Patients receiving medication that may impact hearing (such as ototoxic drugs, including some chemotherapy agents) or those with systemic conditions that can lead to hearing impairment.
-Any other cases deemed inappropriate for this trial by the clinical trial personnel's judgment.

Study & Design

Study Type: Interventional Study

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
uaided and aided pure tone audiometry and speech discrimination score

Secondary Outcome Measures

Name	Time	Method
tinnitogram;vestibular function test;speech intelligibility test ;questionnaires(Abbreviated Profile of Hearing Aid Benefit, Korean version of Hearing Handicap Inventory for the Elderly, Tinnitus Handicap Inventory, hort form of the speech, spatial, and qualities of hearing scale, Dizziness Handicap Inventory)