Exam Preview for 27885: Auditory Evoked Responses for Infant Hearin

Auditory Evoked Responses for Infant Hearing Assessment

Please note: exam questions are subject to change.

1. Which of the following transducer options is best suited for infant ABR assessment with air-conduction stimulation? Supra-aural earphones B-71 bone oscillator Insert earphones Bose sound-cancelling earphones
2. Complete the following statement: The optimal stimulus rate is 11.1 stimuli per second is 21.1 stimuli per second is 37.7 stimuli per second produces the best ABR in the least amount of time
3. Which of the following transducer options is best suited for infant ABR assessment with bone-conduction stimulation? Supra-aural earphones B-71 bone oscillator Insert earphones Bose sound-cancelling earphones
4. Complete the following statement: The necessary number of sweeps in infant ABR measurement. is 3000 is 2000 produces a SNR (ABR to background noise) of 3:1 is 1000
5. Which of the following inverting electrode sites is best suited for infant ABR assessment with air and bone conduction stimulation? Earlobe Mastoid Forehead Tympanic membrane
6. Conventional click stimulation produces an ABR due to activation of which frequency region of the cochlea? 500 to 1000 Hz 20 to 20,000 Hz 2000 to 4000 Hz 500 to 2000 Hz (PTA region)
7. The goal with chirp click stimulation in ABR measurement is to assess hearing sensitivity for frequencies above 8000 Hz maximally activate the cochlea across a wide frequency region produce a frequency-specific ABR eliminate the need for aural immittance measurements
8. The basic principle in chirp ABR measurement is temporal compensation for cochlear travel time to overcome the air-bone gap to sell more ABR devices to eliminate the need for OAEs in infant hearing assessment
9. With the use of chirp click stimuli, amplitude of the ABR wave V: Is smaller in comparison to ABRs recorded with conventional click stimuli Is equivalent to to ABRs recorded with conventional click stimuli Is larger in comparison to ABRs recorded with conventional click stimuli is about 3 microvolts
10. Which one of the following persons published original research on chirp stimuli and their use in ABR measurement? Raymond Carhart James Jerger Claus Elberling Gus Mueller
11. The bone oscillator should be coupled to an infants head as follows: Hand-held by a parent on the temporal bone or using a calibrated elastic headband put in place by a parent Hand-held by a clinician or trained assistant on the temporal bone or using a calibrated elastic headband put in place by a clinician or trained assistant Always using an elastic head band placed by a parent Always using a pediatric-sized steel head band
12. Bone-conduction normal maximum levels for ABR testing are available for the following frequencies: 1000 and 2000 Hz 500 and 3000 Hz 500, 1000, 2000 and 4000 Hz 500 and 2000 Hz
13. Which of the following will help isolate the test cochlea when conducting brief-tone bone-conduction testing in infants? Comparison of bone-conduction ABR thresholds at 500 and 2000 Hz Comparison of bone-conduction ABR thresholds obtained at the forehead and occipital bone Comparison of ipsilateral/contralateral asymmetries in two-channel EEG recordings using bone-conducted stimuli Ask the infant where s/he hears a 2000-Hz brief tone presented at 50 dB HL when the oscillator is placed on the forehead
14. When should clinical masking be attempted for bone-conduction ABR testing in infants? When the infant is restless before starting air-conduction ABR testing When air-conducted thresholds are within normal limits in both ears When air- and bone-conduction ABR thresholds are in the moderate range at 500 & 2000 Hz and the bone-conducted responses in the ipsilateral EEG channel are larger and earlier than in the contralateral EEG channel for both ears When air-conducted ABR thresholds are elevated and ipsilateral/contralateral asymmetries to bone-conducted ABR stimuli are ambiguous
15. When should bone-conduction ABR testing be done during the diagnostic protocol? After air-conduction thresholds are established for both ears Always after all air-conduction, tympanometry & OAE testing has been completed After AC thresholds are shown to be elevated in at least one ear at 2000 Hz Before AC testing