[ ] represents bone conduction (sound introduced in the temporal lobe).
MDRS uses the pure tone scores at [500hz, 1000hz, 2000 hz], which are referred to as the Speech Range, to determine if the client's loss causes serious limitation in their ability to function or move toward functioning on the home or community.
Pure Tone Averages are determined by adding the scores of these ranges and dividing by three. This is called a three-frequency average. If there is a presence of loss in at least one of the frequencies in the speech range that drops sharply at 4000 hrtz, the Counselor should do a four-frequency average.
Several terms are used in the section:
- Air refers to the result of the test for air conduction using pure one averages.
- Bone refers to the results of the test for bone conduction.
*Conduction refers to the outer and middle ear.
*Nerve refers to the inner ear.
*Mixed refers to both the conduction and nerve areas.
*Stable means that the loss has stabilized and might be improved with surgery.
*Progressive means that the loss can be expected to become worse unless corrected by surgery.
*Permanent means that the loss has stabilized, but surgery will not benefit it.
*Diagnosis refers to the physician's medical opinion as to cause of hearing loss.
*Prognosis refers to the physician's medical opinion as to expected outcome of recovery.
If the ENT Physician recommends surgery or hearing aids, the Counselor must still establish eligibility based on hearing loss in the better ear, OSDP is not bound by the ENT physician's recommendation if:
32 Miss. Code. R. 1-19.3