If you have been referred for a diagnostic Audiologic Evaluation, it means that your hearing needs to be further examined. This evaluation may be indicated for individuals who did not pass an initial hearing screening.
The Audiologic Evaluation is done to determine if a hearing loss is present and, if so, to detail the type and severity of the hearing loss. It also may provide insight into the cause of the hearing loss as well as provide guidance for the audiologist in making appropriate treatment recommendations or referrals to other professionals.
What tests will be done?
The specific tests done during the evaluation will depend on the patient's age, symptoms, and medical history. These various tests will determine the degree of hearing loss, the type of hearing loss and the conditions of the ear canal and middle ear. The audiologist will also establish if the hearing loss is conductive (middle or outer ear problem) or sensorineural (inner ear problem or an issue with the auditory nerve and central auditory pathways).
At a minimum, an evaluation includes pure-tone testing, bone conduction testing, and speech testing.
Pure-tone and bone conduction testing
Pure-tone testing determines the quietest tones that a person can hear at different frequencies using headphones or inserts. Bone conduction testing is similar to pure-tone, however, a different type of headset is used to provide the audiologist with different information. A bone conduction test will help the audiologist determine whether the loss is conductive or sensorineural in nature.
A speech reception threshold (SRT) test is used to confirm the results of a pure-tone test. This test determines the lowest level of sound the patient can clearly identify words or speech. Word recognition testing or word recognition scores (WRS) indicates your ability to distinguish words (or word clarity) at a certain presentation level.
The audiologist may also perform otoscopy (physical examination of the outer ear, ear canal and eardrum) and tympanometry (test of the middle ear) to determine the health of the eardrum and the middle ear.
Specialized tests exist for infants and young children, as well as children and adults with developmental and cognitive impairments. These more-specialized tests allow the audiologist to test the auditory system when the patient is not able to actively participate in the tests or evaluation.
What can I expect during a diagnostic hearing evaluation?
The evaluation will last about 30-40 minutes in length. You should also allow time for discussion with the audiologist to review test results and ask questions.
If the results indicate you have a hearing loss, a Communication Needs Assessment is recommended. At this appointment, your hearing loss results, its impact on communication, and solutions will thoroughly be discussed with you.
It is recommended that you bring a family member with you to the evaluation appointment. Most audiologists agree that hearing loss is a family issue. It helps to have another supportive person at the appointment to help you understand the information and recommendations.
Before your appointment, a complete medical history will be completed and the audiologist will want to hear about any complaints you have about your hearing. They will pay special attention to any concerns you have about exposure to noise, tinnitus, and balance problems. Make sure that you take a full list of any medications and supplements you are taking with you to your appointment.
The diagnostic audiologic evaluation is a good chance to establish a relationship with your audiologist. It helps to ask around for recommendations to audiologists in your area and find someone who listens carefully to your concerns. Above all, don't be afraid to ask questions. You will want to be clear on any information you receive so that you can be an active participant in finding hearing solutions that work best for you and your lifestyle.