Audiometry

• The Audiometer

• Test Environment

• Patient’s Role

• Clinician’s Role

• Air Conduction Audiometry

• Bone Conduction Audiometry

• Audiogram Interpretation

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Pure Tone Audiometry

•Generic Audiometer

Audiometer

•Clinical and Portable Audiometer

Audiometer

•Earphones

Audiometer

•Bone Conduction Vibrator

Audiometer

•Sound Treated Booth

Test Environment

•Quiet Room

Test Environment

•Hand Raising

•Signal Button

•Verbal Response

Patient’s Role

•Instructions

•Patient’s Position

•Placement of Earphones

•Test Procedures for Pure Tone Thresholds

Clinician’s Role

•Degree of Hearing Loss based on PTA

• Mild (16 to 40dB)

• Moderate (41 to 70dB)

• Severe (71 to 90dB)

• Profound (91 to onward)

Clinician’s Role

•Basic Audiogram

Audiograms

•Symbols

Audiograms

•Type of Loss – Conductive

•Difference between A/C and B/C More than 15 dB.

•Bone Conduction Normal

Audiograms

•Type of Loss – Sensorineural

•Difference between A/C and B/C less than 15 dB.

•Bone Conduction will be abnormal

Audiograms

•Type of Loss – Mixed

•Difference between A/C and B/C is more the 15 dB.

•Bone conduction will be abnormal

Audiograms

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