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Impedence
Interaural attenuation
Functional hearing loss
Calibration
ISO
ANSI
ENS
NIHL
Acoustic neuroma
Mastoidectomy
Cholesetatoma
Otolyth
Mixed
Congenital
Interaural attenuation
Cross hearing
Malleus, incus & stapes footplate
The middle ear bones
An inflammation affecting middle ear structures
Mastoid, incus & stapes
Post myringotomy scarring
Cholesteatoma
Otosclerosis
Squamous cell carcinoma
Pure tone, warble & pink noise
Narrow band, pure tone & white noise
Narrow band, fm & pink noise
Narrow band, warble & white noise
Interaural attenuation
Undermasking
Overmasking
Masking
Air bone gap of at least 15 dB between ears
Air threshold differences of at least 40 dB between ears
Air bone gap of at least 15 dB in the same ear
Air threshold differences of at least 40 dB in the same ear
Diagnose significant ear difference, refer for medical management
Diagonse hearing loss, proceed with hearing aid assessment & fitting
Diangose noise induced hearing loss, proceed with hearing aid assessment & fitting
Diagnose possible collapsible canals, repeat air thresholds using insertphones or soundfield
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