Audio03 audiometry
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This document provides information on pure tone audiometry testing procedures including: the roles of both the patient and clinician in testing; how to conduct air and bone conduction tests; how to interpret audiograms including different types and configurations of hearing loss; definitions of terms like frequency, intensity, and masking; and descriptions of common equipment used like audiometers and inserts.
Audio03 audiometry
- 1. • Basic Principles of Sound • The Audiometer • Test Environment • Patient’s Role • Clinician’s Role • Air Conduction Audiometry • Bone Conduction Audiometry • Audiogram Interpretation • Masking Pure Tone Audiometry
- 2. • Sound Waves and Propagation of Sound • Frequency (Hz) • Resonance • Intensity (The Decibel or dB) Basics of Sound
- 4. • Clinical and Portable Audiometer Audiometer
- 7. • Bone Conduction Vibrator Audiometer
- 9. • Sound Treated Booth Test Environment
- 10. • Circumaural Enclosures Test Environment
- 11. • Quiet Room Test Environment
- 12. • Hand Raising • Signal Button • Verbal Response • False Positives and False Negatives Patient’s Role
- 13. • Instructions • Patient’s Position • Placement of Earphones • Test Procedures for Screening • Test Procedures for Pure Tone Thresholds Clinician’s Role
- 14. • Instructions • What are they listening for • How to respond • Verify they understand instructions Clinician’s Role
- 15. • Position of Client - Adults and Children • Earphone Placement Clinician’s Role
- 16. • Screening Test Procedures (adults) • Instructions • Test Frequencies • Disposition of Failures Clinician’s Role
- 17. • Pure Tone Threshold Procedures • Self-test • Place earphones on patient • Test better ear first • Order of test frequencies • Test other ear • Use ASHA protocol for threshold testing. Clinician’s Role
- 18. • Pure Tone Average (PTA) • Three tone average • Two tone average • Other methods Clinician’s Role
- 19. • Degree of Hearing Loss based on PTA • None • Slight • Mild • Moderate • Moderately Severe • Severe • Profound Clinician’s Role
- 20. • Role of Bone Conduction • Purpose • Mastoid Placement • Forehead Placement Clinician’s Role
- 23. • Type • Degree • Configuration Audiograms
- 24. • Type of Loss - Conductive Audiograms
- 25. • Type of Loss - Sensorineural Audiograms
- 26. • Type of Loss - Mixed Audiograms
- 27. • Configuration of Loss - Flat Audiograms
- 28. • Configuration of Loss - Sloping (falling) Audiograms
- 29. • Configuration of Loss - Rising Audiograms
- 30. • Configuration of Loss - Tent Audiograms
- 31. • Configuration of Loss - Mid-frequency or Cookie-bite Audiograms
- 32. • Cross Hearing and Interaural Attenutation • Masking Defined • Rules • Types of Masking Noise Masking
- 33. • Cross Hearing • Interaural Attenuation • Definition • Variables • transducers • frequency • individual variability Masking
- 34. • Definition • Introduction of noise in NTE for the purpose of eliminating cross-hearing. Masking
- 35. • Rule • Apply masking to NTE whenever the AC of the TE exceeds the BC for the NT cochlea by the amount of the minimum IA values. • Minimum IA values • Supraaural phones = 40 dB • Insert phones = 70 dB • Bone conduction = 0 dB Masking
- 36. • Types of Masking Noise • White Noise • Narrow Band Noise Masking
- 37. Summary