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Common Errors in Aural Immittance Measurement: Tympanometry and Acoustic Reflexes

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1.  In the classic 1970 Jerger study reported in the paper entitled Clinical Experience with Impedance Audiometry, the negative pressure cut-off for distinguishing between a type A vs. type C tympanogram was: +100 mm H20 -100 mm H20 -150 daPa -150 mm H20

2.  In the classic 1970 Jerger study reported in the paper entitled "Clinical Experience with Impedance Audiometry", pressure change during tympanometry was varied from: Positive to negative Positive and negative Negative to positive Pressure was not changed in the classic 1970 Jerger study

3.  Which one of the following procedures should be completed at least once each day (usually first thing in the morning) before aural immittance measurements are applied in a clinic? Otoscopy Pure tone audiometry Speech reception threshold Calibration of the probe tone intensity in a hard-walled cavity

4.  Which one of the following is important to complete before inserting a probe for tympanometry? Otoscopy Pure tone audiometry Speech reception threshold Examination by an otolaryngologist

5.  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

6.  An acceptable probe tone frequency option for tympanometry in infants 6 months and younger is? 200 Hz 226 Hz 500 Hz 1000 Hz

7.  An acceptable probe tone frequency option for estimating external ear canal volume in infants 6 months and younger is? 100 Hz 226 Hz 500 Hz 1000 Hz

8.  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

9.  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)

10.  Acoustic reflex measurement in neonates should be performed using a tone that is: 200 Hz 226 Hz 1000 Hz A broadband noise (BBN) probe tone