Exam Preview for 27487: Update on Auditory Evoked Responses: Eviden

Update on Auditory Evoked Responses: Evidence-Based ABR Protocol 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. Which of the following stimulus polarity options generally elicits the most robust infant ABR? Condensation polarity Rarefaction polarity Alternating polarity all of the above
3. 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
4. Research shows that spectral splatter is least for which tone burst ramping or windowing? Linear 500 Hz Gaussian Blackman
5. Stimulus threshold in ABR measurement is typically reported with which unit of intensity? dB SPL dB HL dB nHL dB SL
6. Which of the following band pass filter options is best suited for infant ABR assessment? 1 to 100 Hz 30 to 3000 Hz 300 to 3000 Hz 300 to 1500 Hz
7. 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
8. 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
9. 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
10. Which of the following strategies does NOT contribute to minimal ABR test time? Facilitate a sleeping patient state Stop signal averaging when the SNR (ABR to background noise ratio) is 3:1 Always present 2000 stimuli during signal averaging (2000 sweeps) Use chirp stimuli