Audiology Flashcards
Sensorineural Hearing Loss (SNHL)
Hearing loss resulting from inner ear or auditory nerve damage (cochlea, hair cells, or auditory nerve)
difficulty in sound perception and clarity, especially in noisy environments
May experience tinnitus and/or dizziness
Possible causes: NIHL, presbycusis, ototoxicity, acoustic neuroma, meniere’s disease, etc.
Treatment: hearing aids, cochlear implants
AC and BC abnormal, with NO ABG
Impacts HIGH frequencies most
Normal hearing
-10 to 15 dB
Slight HL
16-25 dB
Mild HL
26-40 dB
Moderate HL
41-55 dB
Moderately-Severe HL
56-70 dB
Severe HL
71-90 dB
Profound HL
91+ dB
Cookie Bite Audiogram
A characteristic dip in the mid-frequency range (1000-3000 Hz), often associated with SNHL
Symptoms:
Difficulty understanding speech in noisy environments
Muffled or distorted sound quality in the mid-frequency range
Intact high frequency hearing (birds singing or children’s voices) and low frequency (thunder)
Cochlear Implant Candidacy
Age: 9–12 months old, with earlier implantation (before 3 y/o) showing better outcomes for speech and language
Degree of Hearing Loss: Severe-to-profound bilateral sensorineural hearing loss (>70–90 dB HL) with limited benefit from hearing aids after a 3–6 month trial.
Medical Factors: Adequate cochlear and auditory nerve anatomy confirmed via imaging, with no contraindications for surgery.
Speech and Language: Delayed development despite appropriate amplification and intervention.
Family Commitment: Active involvement in therapy, realistic expectations, and willingness to manage the device long-term.
Dynamic Assessment
model of assessment that evaluates a child’s ability to learn and generalize after being taught.
Test: Initial evaluation of skills.
Teach: Targeted teaching.
Retest: Re-evaluation to measure progress.
AAC Participation Model
Everyone can communicate!
External factors considered as potential barriers to be addressed, not restrictions
Assessment is ongoing
intervention facilitates meaningful communication and participation, identifies actual and opportunity barriers
Technology does not make a competent communicator
Aided AAC
use of external aid such as communication board, books, voice output device, etc.
devices used to transmit or receive message
Unaided AAC
produced by the body
Vocalizations, gestures, signs
symbols
real objects, photos, pictures, drawings, orthography