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Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
Introduction to Basic Audiology
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Introduction to Basic Audiology

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Introduction to Basic Audiology posted at Cairo University Audiology Unit, Cairo University, the leading educational resource for Audiology in Egypt

Introduction to Basic Audiology posted at Cairo University Audiology Unit, Cairo University, the leading educational resource for Audiology in Egypt

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  • 1. Introduction to Basic Audiology
  • 2. Introduction to Diagnostic Audiology  Pure tone air-conduction  Bone-conduction  Speech Audiometry  Acoustic immittance
  • 3. Audiometric Evaluation  Otoscopic observation (excessive cerumen, foreign body, etc)  Comprehensive case history  Audiometric testing: Air conduction .25-8K Hz. Bone-conduction .5-4K Hz  Speech Audiometry: SRT, Word recognition  Acoustic Immittance: Tympanometry, acoustic reflexes, reflex decay
  • 4. Audiogram
  • 5. Unmasked and Masked Audiometric Symbols
  • 6. “No Response” Audiometric Symbols
  • 7. Hearing Loss  Normal hearing for adults=0 to 20 dB  Mild hearing loss =21 to 40 dB  Moderate hearing loss=41 to 55 dB  Moderately Severe hearing loss=56 to 70 dB  Severe hearing loss=71 to 90 dB  Profound hearing loss=90+ dB  For children: 0-15 dB normal  16-20 dB=borderline normal
  • 8. Types of Hearing Loss  Type Site Example  Conductive Outer/Middle Cerumen/OM  SensorineuralInner Aging/noise  Mixed Outer/Middle Cerumen/aging Inner
  • 9. Headphones
  • 10. Headphones
  • 11. Insert Earphones
  • 12. Bone Vibrator
  • 13. Bone Conduction
  • 14. Bone Conduction Calibration
  • 15. Relationship between air and bone conduction thresholds and type of loss
  • 16. Example of Masking
  • 17. Normal Audiogram
  • 18. Bilateral Conductive HL
  • 19. Example of SNHL
  • 20. Example of a Mixed HL
  • 21. Example normal Left, SNHL right
  • 22. Spondee Threshold  Magnitude of HL for speech  Reference for word recognition testing  Agreement with pure-tone average (PTA)  ~10 dB  Malingering  May not agree in cases of precipitous HFSNHL
  • 23. Spondee Word List
  • 24. Interpretation of Word Recognition
  • 25. Example of NU-6 Word Recognition List

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