What the Hearing?
Bone conduction is normal and air conduction is abnormal
What is a conductive hearing loss?
The softest speech sound you can hear 50% of the time
What is Speech Detection Threshold (SDT)?
0-20dBHL on the audiogram
What is normal hearing?
Testing that includes tympanometry, acoustic stapedial reflexes and admittance
What is Immittance?
Threshold at 500 Hz, 1000 Hz, and 2000 Hz divided by 3
What is the Pure Tone Average (PTA)?
Right ear WNL and left no response at any pitch by A/C or B/C
What is a unilateral profound hearing loss?
Two-syllable words used to find softest speech recognition threshold
What are spondees? (Baseball, Hotdog, Airplane)
Test that uses an air pump to change pressure in the middle ear
What is Tympanometry?
A downward arrow on the audiogram
What is No Response?
A/C & B/C thresholds are all less than 20 dBHL in each ear
What is normal hearing bilaterally?
Two-syllable words used to find the Speech Reception Threshold
What are Spondees? (Airplane, Baseball, Hot Dog...)
Presbycusis causes this type of hearing loss
What is sensorineural?
Two muscles in the middle ear retract and pull Ossicles apart in this test
What is acoustic stapedial reflex?
Circumaural earphones 40 dBHL; Insert earphones (70 dBHL); B/C 0 dBHL
What is interaural attenuation?
B/C thresholds are abnormal, A/C thresholds are abnormal and there is an ABG
What is mixed hearing loss?
Begin at 30 dBHL @ 1000 Hz; response, go down 10 dB, no response, go up 5 dB
What is the method to find pure tone thresholds?
Audiologists use this to avoid cross-over of sound to the other ear
What is masking?
The average length of this in an adult is ~1.5-2.5 mm
What is the EAC?
A/C thresholds are between 100 and 105 dBHL in each ear across the frequencies and only vibrotactile responses by B/C
What is profound SNHL bilaterally?
The softest level of tones that a person can hear 2/3 times
What is pure tone threshold?
A type of pathology that involves the VIIIth nerve or the auditory brainstem.
What is retrocochlear?
If there is a large volume of the EAC on a tympanogram (7.0 mm), this is likely
What is a TM perforation or PE tube?
Objective evaluation of the auditory system measuring the first 15 ms of EEG in response to sound
What is ABR, BAEP, AEP, BAER? (Auditory Brainstem Response