Pure Tone Audiometry Flashcards
What are the six test considerations?
- Reliability
- Validity
- Sensitivity
- Specificity
- Efficiency
- Predictive
Which 4 test considerations go hand-in-hand?
Reliability & Validity
Sensitivity & Specificity
Define Reliability
The ability for test results to be repeatable
Define Validity
Does the test have variety to truly measure what it’s supposed to measure?
Define Sensitivity
The test being able to correctly identify a disorder
Define Specificity
The test being able to factor out those who do not fit the criterion
Define Efficiency
A test having a lot of false positive and false negative results
Define Predicative Value
The percentage of true positive and true negative results
What are the four test outcomes?
- True Positive
- True Negative
- False Positive
- False Negative
Define True Positive
Indicates a disorder is correctly present in patient
Define True Negative
Correctly eliminates an incorrect disorder
eg: a person w/o HL is giving an assessment and results show that their hearing is WNL
Define False Positive
Indicates that a disorder is present in a patient that doesn’t have a HL
Define False Negative
Incorrectly states that a person with a HL does not have it
What are the 4 Tuning Fork Tests?
- Schwabach Test
- Rinne Test
- Bing Test
- Weber Test
What is a Schwabach Test
It compares the patient’s hearing sensitivity to the clinicians
What is the Rinne Test?
It compares bone conduction to air conduction
What is the Bing Test?
Consists of an occlusion effect to differentiate SNHL vs CHL
What is the Weber Test?
It tests for lateralization
What is the Weber Test based on?
The Stenger Principle
List 6 reasons why tuning fork test aren’t widely used?
- Different intensity level depending on how hard you hit tuning fork
- Does not have specific intensities for diagnostic purpose
- It is not ear specific
- Totally subjective leading to poor reliability
- Relies on tester knowing their hearing level and not having a hearing loss
- It only has one frequency and is cumbersome to using vs using the audiometer
Instead of a tuning fork, what do we use instead and what does it give?
The audiometer and it gives a distinct reliable frequency that we need
What are the frequencies given from the audiometer?
- 125-12000 Hz
2. -10 ~ 110dbHL
Are testing chambers soundproof?
No, they’re sound treated which eliminates majority of sound but not entirely
For the patient, what are things an Audiologist should keep in mind?
- Their age, intelligence, education, motivation, willingness to cooperate
- Individualized approach to testing
- Before beginning, ask if they understand the instructions
- Positioning