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Back to Basics: Immittance Audiometry

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1.  Tympanogram types were originally created to interpret uncalibrated tympanometry and were first published by: James Jerger Stanley Gelfand Otto Metz Gunnar Liden

2.  The best sensitivity for detecting OME in children can be obtained by recording: Abnormally broad tympanometric width Abnormally low static admittance Type B tympanogram Absent acoustic reflexes

3.  Tympanometric equivalent volume is useful for: Interpreting the reason for a flattened tympanogram Determining patency of a PE tube Assessing potential for recurrence of OME after tube insertion All of the above

4.  Tympanometry is insensitive to otosclerosis because: It tests only a restricted frequency range The pathology is far from the location of measurement The effects on admittance are subtle and variable All of the above

5.  A patient with right-sided hearing loss of 40 dB HL presents with the following acoustic reflex pattern: Absent right ipsi and contra, present left ipsi and absent left contra. What type of hearing loss is most likely? Right conductive Right retrocochlear Right sensory Right sensorineural

6.  When reporting acoustic reflex results, correct nomenclature to report results is by recording thresholds and presentation mode for the: Probe ear Stimulus ear Probe and stimulus ear Ipsilateral and contralateral ear

7.  To avoid possible iatrogenic hearing loss, it is recommended that reflex decay testing be limited to less than: Threshold of discomfort 125 dB SPL 105 dB SPL 115 dB SPL

8.  A patient with a hearing loss at 1000 Hz of 70 dB HL presents with an acoustic reflex at 80 dB HL at 1000 Hz. What is your interpretation of this result? Possible retrocochlear disorder Consistent with sensory hearing loss Possible pseudohypacusis Consistent with mixed hearing loss

9.  An optimal probe stimulus for detecting acoustic reflexes in newborns is: 500 Hz 226 Hz 2000 Hz 1000 Hz

10.  Wideband tympanometry offers the advantage of: Assessing the entire frequency range with one stimulus Examining absorbance, reflectance and impedance with one measurement Wide frequency range as a function of air pressure All of the above