Hearing

Presbycusis

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Presbycusis

  • Definition
  1. Hearing Loss related to aging
  • Epidemiology
  1. Onset in middle age, and slowly progressive
  2. Most notable over age 65 years
  • Pathophysiology
  1. Slowly progressive Sensorineural Hearing Loss
  2. Typically due to atrophy of Organ of Corti and auditory nerve at basal end of Cochlea
  • Symptoms
  1. Abrupt high frequency Hearing Loss
  2. Decreased speech discrimination
    1. Poor understanding of speech even when loud enough
  3. Recruitment
    1. Abnormal hypersensitivity to noise
  • Evaluation
  1. Audiometry displays high pitched Hearing Loss
  2. Acoustic reflex testing