Audiometry
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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