AAO-HNSF Certificate Program for Otolaryngology Personnel

Electroacoustic vs. Biologic Calibrations • Electroacoustic should be done at least once a year, if a problem is suspected, or if headphones are replaced • Biologic should be done at least once a month, or when equipment is moved, when headphones are replaced • The person used to do biologic calibrations should have known and stable hearing

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

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What is an Audiogram? • A test used to determine hearing levels at various frequencies

• Used to help determine site of lesion/type of hearing loss • Used to document success or failure of medical or surgical treatments • Graph or serial format • Symbols used to graph hearing levels

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

5

What is Threshold? • The intensity (loudness) at which a pure tone is barely audible • Technically, it is a 50% response level • Practically, most people use a 100% response level • Measured in decibels (dB) • Threshold symbol is θ

AAO-HNS/F

Certificate Program for Otolaryngology Personnel Workshop

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