Tests of Hearing And Pure Tone Audiometry. Objective.

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Presentation transcript:

Tests of Hearing And Pure Tone Audiometry

Objective

TERMINALOGY

BONE CONDUCTION

MASKING

PURE TONE

AUDIOGRAM

TUNING FORK TESTS

RINNE’S TEST

WEBER TEST

PURE TONE AUDIOMETRY

Cont…

TYPES OF HEARING LOSS

Conductive Hearing loss (deafness)

Conductive deafness

Sensorineural Hearing loss (deafness)

Sensorineural

Mixed Hearing loss

Mixed Hearing Loss

DEGREES OF HEARING LOSS  Normal hearing (0-25 dB)  Mild hearing loss (26-40 dB)  Moderate hearing loss (41-55 dB)  Moderate-severe hearing loss (56-70 dB)  Severe hearing loss (71-90 dB)  Profound hearing loss (>90 dB)

COMMON AUDITORY DISORDERS  Presbyacusis (age related hearing loss)  Otitis media: This condition is marked by fluid in the middle ear space usually secondary to an infection.  Noise-induced hearing loss.  Otosclerosis: The condition is caused by stapedial fixation in the oval window, stiffening the middle ear system.  Ménière disease

Presbyacusis

Glossary  Pure tone  Deafness  Conductive  Contralateral  Frequency

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