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25 True/False questions

  1. Parts of speech audiometer•Microphone
    •External inputs
    •VU meter
    •Talk over/talk back

          

  2. Types of Audiometers: A-C-1 is the best for diagnostics. Has all inputs
    -4 is pure tones. NO speech, best for hearing screenings.
    -Some may be able to turn up louder than they are calibrated for, so always check

          

  3. Talk backpt's voice; to hear them

          

  4. Types of Transducers•Standard (regular headphones)
    •Inserts (makes sound louder so you have to adjust for that)
    •High freq. or Supra-aural headphones (whole ear is inside & lets us test 8K Hz)
    •Sound field (height, distance, and locations matter in terms of calibration)
    •Bone oscillator (calibrated on forehead or mastoid)

          

  5. How do we run a daily listening check on a OAEs?Check BOTH ears!

    • Make sure you can hear sounds playing out of each ear.
    • If you have normal hearing you should have present OAEs

          

  6. External inputs calibration-Tape players, CDs, iPods, MP3s.
    -Must be calibrated daily.
    -Tones usually played at a 1000 Hz, but you need to adjust the tone at 0 on the VU meter.

          

  7. Purpose of Daily Listen Checks?• Save time
    • If there is problem with the equipment, we would like to fix it or find a solution BEFORE the patient is seen
    • Ensure that test results obtained are accurate
    • Is the person not responding because they have a HL or is it
    because our equipment isn't functioning?
    • RED FLAGS: Asymmetrical HL, No response in soundbooth but patient can hear just fine in person.
    • Professionalism

          

  8. Daily listen checks for hearing screeningsalways perform a listening check on the screening audiometer before taking it out of the clinic

          

  9. How do we run a daily listening check on a tympanometer?• 1. You can check your own ear and should see normal
    movement.
    • 2. Use a 2 cc. Coupler that is in the clinic. You should see a volume of 2ml.

          

  10. Calibration of audiometers•Attenuator- intensity dial
    •Frequency selector- lets you change the Hz you're testing
    •Transducer
    •Talk over dial
    •Talk back dial
    •VU meter- for speech

          

  11. Otoacoustic Emmission (OAEs)Device that tests the outer hair cell function of a person. You put a probe that plays an sound into each ear.
    • Can be software installed on a computer
    • Can be a handheld screener

          

  12. Microphone caliration-If you listen/use the microphone, it has to be calibrated through your voice. Strive to be right at 0.
    -Works for your voice and external inputs
    -Check EVERYTIME

          

  13. Parts of an audiometer•Attenuator- intensity dial
    •Frequency selector- lets you change the Hz you're testing
    •Transducer
    •Talk over dial
    •Talk back dial
    •VU meter- for speech

          

  14. Standards•International Organization for Standardization (ISO)
    •International Electrotechnical Commission (IEC): showing electronically it won't hurt anyone
    •American National Standard Specification for Audiometers (ANSI): depending on the class of audiometers they are putting out the same thing
    •Acoustical Society of America (ASA)
    •ASHA: require that if we take out a portable audiometer we fill out checklist and it needs to be completed before you screen (ANSI and licensure board require the same)
    •Texas Requirements: fill out green cards
    •On the General Audiometer Checklist (Ideally all should be checked "no" but #12 should be checked "yes.")
    •Required to check the Audiometers.

          

  15. VU meter calibration-If you listen/use the microphone, it has to be calibrated through your voice. Strive to be right at 0.
    -Works for your voice and external inputs
    -Check EVERYTIME

          

  16. Tympanometermy voice; make sure it's not turned up all the way; so pt. hears you

          

  17. What type of audiometer do we usually take to schools?4,1,C

          

  18. How do we run a daily listening check?-You will need a partner to be in the sound booth. --First check, air conduction testing while using the headphones.
    -The person in the booth should be able to hear the signal at each frequency (250-8000 Hz).
    -Next, use the bone oscillator and to the same.
    -Finally check sound field speakers.
    -There is a checklist in the booths

          

  19. Basic parts of a Tympanometer•Attenuator- intensity dial
    •Frequency selector- lets you change the Hz you're testing
    •Transducer
    •Talk over dial
    •Talk back dial
    •VU meter- for speech

          

  20. Types of Audiometers: 1-4-Type A: (the best) let's you do anything (i.e. microphone, CD) for speech testing.
    -Type C: limited options (maybe a tape); least amount of speech ability

          

  21. Types of Audiometer: channels-Internal components that let you take a particular signal, specifically pure tone, control the frequency and you can handle ears separately with 2 channels
    -1 Channel: can only use one transducer at a time
    -1 ½ Channels: let's you do some things at the same time; just can't do two different transducers
    -2 Channel: very expensive; handles ears complete separately

          

  22. Talk overpt's voice; to hear them

          

  23. Parts of an Immittance Bridge•Attenuator- intensity dial
    •Frequency selector- lets you change the Hz you're testing
    •Transducer
    •Talk over dial
    •Talk back dial
    •VU meter- for speech

          

  24. WHAT IS A DAILY LISTENING CHECK (DLC)?-You will need a partner to be in the sound booth. --First check, air conduction testing while using the headphones.
    -The person in the booth should be able to hear the signal at each frequency (250-8000 Hz).
    -Next, use the bone oscillator and to the same.
    -Finally check sound field speakers.
    -There is a checklist in the booths

          

  25. A Tympanometer includes...• Tympanometry
    • Acoustic Reflexes
    • Acoustic Reflex Decay
    • Eustachian Tube Function