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Common Errors in Diagnostic Audiology: Tips for Improving Efficiency, Accuracy and Outcomes

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1.  Which one of the following steps should be taken at the beginning of OAE recording? Air conduction pure tone audiometry Bone conduction pure tone audiometry Tympanometry Verification of stimulus intensity levels

2.  Which one of the following steps should be taken periodically throughout OAE recording? Patient instruction Manipulation of stimulus intensity levels Monitoring noise levels Middle ear measurement

3.  Which one of the following is a reasonable number of test frequencies per octave for a diagnostic OAE recording? 1 2 3 ≥5

4.  Normal OAEs at any test frequency is typically indicated by? An OAE – noise recording difference of ≥6 dB An OAE – noise recording difference of ≥10 dB A noise recording – OAE difference of ≥6 dB OAE amplitudes within a normal region and OAE – noise difference of ≥6 dB

5.  To reduce the noise floor when recording OAEs: Use a shallow probe insertion depth Use a smaller (looser) probe Move the patient closer to the OAE equipment Use a tighter fitting probe, a deeper probe insertion depth and minimize ambient room noise

6.  Which of the following is a reasonable step for enhancing wave I with click stimulation at the beginning of ABR measurement: Change from insert earphones to supra-aural earphones Increase from an intensity level of 70 dB nHL to 80 or 85 dB nHL Attempt bone conduction ABR recording Change from a click stimulus to a 500 Hz tone burst stimulus

7.  A clinically feasible and efficient stimulus presentation rate in pediatric ABR measurement with tone burst stimuli is: 11.1/sec 21.1/sec 37.7/sec 5 to 10 minutes per ear

8.  Clinical indications for a bone conduction ABR include risk factors for conductive hearing loss risk factors for sensorineural hearing loss normal tympanometry results normal air conduction ABR

9.  Research shows that ABR test time is decreased with the application of which one of the following techniques: Condensation stimulus polarity High pass filter setting of >150 Hz Chirp clicks and tone bursts Insert earphones

10.  Factors that must be considered for accurate analysis of ABR findings: Click stimulus Non-pathologic subject factors (age, gender, body temp., drugs) Other auditory test findings All of the above

11.  Which one of the following rates for changing air pressure in the external ear canal would be most effective with active infants and young children? 50 daPa/sec 100 daPa/sec 200 daPa/sec Tympanometry is not possible with active infants and young children

12.  An acceptable probe tone frequency option for measuring tympanometry in infants 6 months and younger is? 100 Hz 226 Hz 500 Hz 1000 Hz

13.  Technically, a type B tympanogram should not be reported in patients with patent ventilation tubes or perforations of the tympanic membrane because? Tympanometry poses a health risk to the patient It's not possible to calibrate the probe tone intensity Air pressure cannot be changed in the external ear canal Tympanometry causes the patient excessive discomfort

14.  Differentiation between normal hearing sensitivity and cochlear hearing loss with acoustic reflex measurement is most effective for which one of the following stimuli? 500 Hz 1000 Hz Average acoustic reflex threshold for 500, 1000, and 2000 Hz Broadband noise (BBN)

15.  Acoustic reflex measurement in neonates should be performed using a probe tone of: 200 Hz 226 Hz 1000 Hz a broadband noise (BBN) probe tone