Central Auditory Processing and the Use of Hearing Aids

Not Applicable

Completed

• Conditions: Auditory Processing Disorder, Central
• Interventions: Device: Hearing aids

• Registration Number: NCT01897181
• Lead Sponsor: Jong Woo Chung

Brief Summary

The purpose of this study is to evaluate the central auditory processing in patients with bilateral sensorineural hearing loss and to observe the change of the central auditory processing ability after using hearing aids.

Detailed Description

Screening for recruiting

* Among patients who are visiting for hearing disturbance, patients with bilateral sensorineural hearing loss will be included after audiologic tests, history taking and physical examination.

* audiologic tests: pure tone audiometry, speech audiometry, impedence audiometry, distortion product otoacoustic emission, auditory brainstem response.

Dividing into "Hearing aids" group and "No hearing aids" group

* The use of hearing aids will be recommended to all included patients.

* Hearing aids group: patients who want to be prescribed hearing aids (28 subjects)

* No hearing aids group: patients who do not want to be prescribed hearing aids (28 subjects)

Audiologic test

* Hearing in noise test (HINT), central auditory processing disorder test

* at screening, 1, 3, 6, 9 and 12 months after starting hearing aids use

Study Timeline

• Study Start: 2013-07
• Study First Submitted: 2013-07-05
• Study First Submitted QC: 2013-07-09
• Study First Posted: 2013-07-11
• Primary Completion: 2015-12
• Study Completion: 2015-12
• Status Verified: 2016-02
• Last Update Submitted: 2016-02-14
• Last Update Posted: 2016-02-17

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 27

Inclusion Criteria

• Adults of age 45 years of older
• Bilateral sensorineural hearing loss
• Average pure tone audiometry threshold >= 40dB
• Speech discrimination >= 60% in both ears

Exclusion Criteria

• Refusing the study
• Medical history of any brain damage or intracranial surgery
• Showing signs of central lesion in MRI or neurologic exams
• Speech discrimination < 60% in any ear

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Hearing aids	Hearing aids	Patients who agree to use hearing aids

Primary Outcome Measures

Name	Time	Method
Change from the baseline in the Hearing In Noise Test (HINT) score at 6 months	at screening and 6 months after starting hearing aids use	HINT measures a person's ability to hear speech in quiet and in noise. In the test, the patient is required to repeat sentences both in a quiet environment and with competing noise being presented from different directions.

Secondary Outcome Measures

Name	Time	Method
changes from the baseline in central auditory processing disorder test score at 1, 3, 6, 9 and 12 months	at screening, 1, 3, 6, 9, and 12 months after starting hearing aids use	The central auditory processing disorder test is composed of three subtests; duration pattern test, frequency pattern test and dichotic words test. The patient is required to discriminate long duration sound from short one and high frequency sound from low one, and to repeat two words that are given simultaneously.
changes from the baseline in the HINT score at 3, 9, and 12 months	baseline, 3, 9 and 12 months

Trial Locations

Locations (1)

Asan Medical Center; 🇰🇷 Seoul, Korea, Republic of