A 78 year old female has difficulty understanding conversati…
A 78 year old female has difficulty understanding conversations in noisy environments. She is referred for audiology evaluation. Audiometry results are as follows: 1) mild hearing loss at low frequencies, sloping to profound loss at high frequencies; 2) hearing thresholds for air and bone conduction overlap; 3) speech discrimination 83% right in right ear, 85% in left ear. Which of the following is the most likely cause of this patient’s hearing loss?
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