Central Auditory Processing and the Use of Hearing Aids

Jong Woo Chung27 enrolled

Overview

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.

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 Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

DIAGNOSTIC

Masking

NONE

Enrollment

Conditions

Auditory Processing Disorder, Central

Interventions

Hearing aidsDEVICE

Using hearing aids for 12 months

Eligibility

Sex: ALLMin age: 45 Years

Medical Language ↔ Plain English

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

Locations (1)

Asan Medical Center

Seoul, South Korea

Outcomes

Primary Outcomes

Change from the baseline in the Hearing In Noise Test (HINT) score at 6 months

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.

Time frame: at screening and 6 months after starting hearing aids use

Secondary Outcomes

changes from the baseline in central auditory processing disorder test score at 1, 3, 6, 9 and 12 months

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.

Time frame: at screening, 1, 3, 6, 9, and 12 months after starting hearing aids use

changes from the baseline in the HINT score at 3, 9, and 12 months

Time frame: baseline, 3, 9 and 12 months

Data from ClinicalTrials.gov

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