Hearing Aid Dispenser's Written 118 Exam Questions & Answers | with 100% Correct Answers | Updated & Verified

Why do we perform audiometric tests? - ️️to determine the different characteristics of a hearing loss if one presents A hearing loss is characterized by what three descriptors? - ️️1. Type of hearing loss (conductive, sensorineural, mixed) 2. Degree of hearing loss (mild, moderate, etc) 3. Configuration of hearing loss or what the hearing loss looks like (ex: flat, rising, sloping, etc) Conductive hearing loss - ️️a loss that occurs when sound is NOT transmitted efficiently through the ear canal, eardrum and ossicles of the middle ear. What can cause a conductive hearing loss? - ️️- middle or outer ear infection - perforated tympanic membrane - cerumen impaction - benign tumors - absence/malformation of the outer ear, ear canal, or middle ear Can conductive hearing losses be medically treated? - ️️Yes (and surgically) Sensorineural hearing loss - ️️occurs when there is damage to the inner ear (cochlea) or to the nerve pathways from the inner ear to the brain (retrocochlear) *permanent loss* What can cause a sensorineural hearing loss? - ️️- disease - birth injury - ototoxic drugs