The Wideband Acoustic Immittance Data in Thai Normal Hearing and Conductive Hearing Loss Adults

The goal of this descriptive study is to collect the wideband immittance data in Thai normal hearing and conductive hearing loss adults. The main questions it aims to answer are:

1. What is normative data of wideband acoustic immittance in Thai normal hearing adults 2. What is the wideband acoustic immittance data in Thai conductive hearing loss who have type A, AS and Ad tympanogram Participants will examine hearing tests consequently

* pure tone audiometry * Tympanometry with ipsilateral acoustic reflex * Wideband acoustic immittance

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Key information

Conditions

Normal Hearing Conductive Hearing Loss, Middle Ear Ear Diseases Hearing Disorders Hearing Loss Hearing Loss, Conductive Nervous System Diseases Neurologic Manifestations Otorhinolaryngologic Diseases Pathological Conditions, Signs and Symptoms Sensation Disorders Signs and Symptoms

Age range

18 year–59 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Department of otolaryngology

Khon Kaen, 40002, Thailand

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Normal group

Thai adults (18-60 years old)
Pure-tone air-conduction thresholds ≤ 25 dB HL, measured at audiometric frequencies 250, 500, 1000, 2000, 3000, 4000, 6000 and 8000 Hz and air-bone gab < 10 dBHL at frequencies 500, 1000, 2000 and 4000 Hz
Type A tympanogram with present ipsilateral acoustic reflex
No diagnosis of middle ear disease
No history of middle ear surgery
Normal finding in otoscopic examination

Conductive hearing loss group

Thai adults (18-60 years old)
Pure-tone air-conduction thresholds > 25 dB HL, measured at audiometric frequencies 250, 500, 1000, 2000, 3000, 4000, 6000 and 8000 Hz and air-bone gab > 10 dBHL at frequencies 500, 1000, 2000 and 4000 Hz at least 2 frequencies in one ear
Type A, As or Ad tympanogram with absent ipsilateral acoustic reflex
Normal finding in otoscopic examination
There is an appointment for exploration middle ear within 2 months

Exclusion criteria

Have previously had middle ear surgery
Have an earache
Type B or C tympanogram
Volunteers who do not cooperate in audiometry test or unable to do audiometry test

Treatment and study plan

Primary outcomes

Normative data of wideband acoustic immittance in Thai normal hearing adults

Time frame: 3-4 months

Normative data of wideband acoustic immittance refers to wideband absorbance at peak pressure and wideband absorbance at ambient pressure at across frequency (226 to 8000 Hz.)

Secondary outcomes

The wideband acoustic immittance data in Thai adults conductive hearing loss

Time frame: 16-18 months

The wideband acoustic immittance measures characteristic of conductive hearing loss with tympanogram types A, As, and Ad

Sponsors and collaborators

Lead sponsor

Khon Kaen University

Other

Collaborators

Chiang Mai University
Prince of Songkla University

Registry information

Important dates

Study start: 2024
Primary completion: 2025
Study completion: 2026
First posted: Feb 9, 2024
Registry last updated: Jul 26, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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