Introduction; What Are Dpoaes; What Are Teoaes; What Do Otoacoustic Emissions Results Tell Us - Interacoustics OtoRead Instructions For Use Manual

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Introduction

1.1 About this manual
This manual is valid for the OtoRead™ (valid from UI V3.41.0 FW version 113). This product is manufactured
by:
1.2 Intended use
The OtoRead™ Otoacoustic Emission Test Instrument is designed to be a screening device for hearing loss
in infants, children, and adults by measuring otoacoustic emissions (OAE).
This instrument is suitable for use in all settings, including hospitals, schools, physicians' offices, and
audiologists' practices. The OtoRead™ is intended to be used by hearing healthcare professionals (i.e. ENT
doctors, audiologists) and/or technicians, neonatal nurses and school nurses who have been trained by a
hearing healthcare professional.
1.3 Otoacoustic Emissions
1.3.1

What are DPOAEs?

Distortion Product Otoacoustic Emissions (DPOAEs) are acoustic signals that can be detected in
the ear canal of a person with normal outer hair cell function, subsequent to stimulation of the
auditory system with a pair of pure tones at frequencies f1 and f2. The resulting emission of interest
is the distortion product tone at the frequency 2f1 - f2.
1.3.2

What are TEOAEs?

Transient Evoked Otoacoustic Emissions (TEOAEs) are acoustic signals that can be detected in
the ear canal of a person with normal outer hair cell function, subsequent to stimulation of the
auditory system with a series of wideband clicks.
1.3.3

What do Otoacoustic Emissions results tell us?

Available evidence suggests that otoacoustic emissions (OAEs) are generated by the cochlea's
outer hair cells, and that the presence of OAEs is an indication that the outer hair cells are normal.
Although OAE test data provide no indication of inner hair cell function, or of hearing ability, current
research indicates that the majority of hearing-impaired individuals will be identified by a simple
OAE test. Patients who fail to generate OAEs should be rescreened and/or referred for additional
audiological testing.
1.3.4 How does the OtoRead
The OtoRead
then measures the level of the DPOAE tone generated by the cochlea. By using different test
frequencies, the OtoRead
range of frequencies.
D-0116685-B – 2020/03
OtoRead™ - Instructions for Use - US
Interacoustics A/S
Audiometer Allé 1
5500 Middlefart
Denmark
Tel.: +45 6371 3555
Fax: +45 6371 3522
E-mail: info@interacoustics.com
Web: www.interacoustics.com
device measure DPOAEs?
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instrument generates a series of test tones, directs them into the ear canal, and
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device provides an estimate of outer hair cell function over a wide
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