BAEP EXAM QUESTIONS & ANSWERS
A - Answers :Low frequency sounds are
A- at the apex of the cochlea
B- perceived along Reissner's membrane
C- near the round window
D- near the stapes
A - Answers :Wave III of the BAEP is generated by the
A- cochlear nucleus
B- inferior colliculus
C- lateral lemniscus
D- medial geniculate
B - Answers :A rarefaction click occurs when the
A- movement of a transducer diaphragm alternates in polarity relative to the tympanic
membrane on a random basis
B- initial movement of a transducer diaphragm is away from the tympanic membrane
C- movement of a transducer diaphragm alternates in polarity relative to the tympanic
membrane every second trial
D- initial movement of a transducer diaphragm is towards the tympanic membrane
B - Answers :The masking level suggested for the elimination of crossover responses is:
A- 100 dB peSPL
B- 60 dB SPL
C- Same intensity as the click
D- 60 dB nHL
A - Answers :What problem may occur when performing intraoperative BAEPs using
compressible tubing?
A- The compressible tubing can become obstructed and obscure the sound to the ear
B- The patient's postoperative hearing can become impaired
C- Their use may cause trauma to the ear canal and should be avoided
D- A contamination of the sterile field can occur
D - Answers :An appropriate BAEP stimulation rate to avoid synchronization with 60 Hz
artifact, would be
A- 20 per second
B- 10 per second
C- 6 per second
D- 9.5 per second
D - Answers :When recording BAEPs in the OR, some auditory stimulators utilize
several inches of tubing to connect the transducer and ear inserts which:
A- do not affect the latencies of the waveforms
B- are comparable to acoustically shielded headphones
,C- delay the signal to the transducer and can cause 60 Hz artifact
D- delays the arrival of the sound to the ear and separates stimulus artifact
A - Answers :If the patients threshold is 25 dB and the stimulator is set to 85 dB, then
the intensity is
A- 60 dB SL
B- 60 dB HL
C- 110 dB SL
D- 85 dB SL
C - Answers :Increases in latency of both right and left ABR wave V of 0.9 msec in a 10
minute period would most likely indicate:
A- ambient noise
B- a "kink" in the sound delivery tubing
C- temperature effects
D- auditory nerve damage
A - Answers :ABR wave V will increase in latency about
A- 0.2 ms per degree Centigrade
B- 1.0 ms per degree Centigrade
C- 2.0 ms per degree Centigrade
D- 0.5 ms per degree Centigrade
C - Answers :ABR waveforms cannot be recorded in all of the following conditions
except:
A- intensity levels of 30 dB peSPL
B- bone drilling
C- electrode montage Fpz-A(ipsi)
D- "kinking" of the sound delivery tube
B - Answers :Increasing the BAEP rep rate from 3.4 to 31.1
A- decreased latency, increased amplitude
B- increased latency, decreased amplitude
C- decreased latency, decreased amplitude
D- increased latency, increased amplitude
B - Answers :During BAEP from posterior fossa craniotomy, if reversible loss of all ipsi
BAEP responses occurs:
A- drug effect
B- complete recovery of neuronal function
C- hypothermia
D- probable neuronal deficit post-op
B - Answers :A stimulus rate that is suitable for ABR monitoring is
A- 20
B- 31.1
, C- 81.1
D- 4.1
D - Answers :"Hearing level" (HL) is defined as the:
A- lowest intensity that an average ear drum can hear
B- inverse of the sound pressure level
C- intensity of a long duration sound that has the same amplitude as the peak SPL of a
short duration sound
D- average threshold intensity of normally hearing young adults
A - Answers :Waves III to V on the ABR are probably generated
A- at the pons-midbrain area
B- at the cortex
C- at the medulla
D- at the cerebellum
D - Answers :The sound intensity equivalent for ABR clicks that is compared to the
physical measurement of sound is:
A- dB
B- dB HL
C- dB SL
D- dB pe SPL
A - Answers :Changing from standard headphones to insert transducers connected by
plastic tubing will change the latency of wave I by about
A- +0.9 msec
B- +0.5 msec
C- +2 msec
D- -0.5 msec
A - Answers :ABR rarefaction clicks from the transducer causes
A- movement of the tympanic membrane away from the cochlea
B- movement of the tympanic membrane toward the cochlea
C- elimination of stimulus artifact
D- movement toward and away from the cochlea
D - Answers :The ABR electrode montage would include
A- CP3, CP4, Cpz
B- Fpz, CP4, CPz
C- M1, M2, Oz
D- Cz, A1, A2
D - Answers :The type of pathology that would change the ABR interpeak latencies the
greatest is
A- pathology in the middle ear
B- pathology in the cochlea
A - Answers :Low frequency sounds are
A- at the apex of the cochlea
B- perceived along Reissner's membrane
C- near the round window
D- near the stapes
A - Answers :Wave III of the BAEP is generated by the
A- cochlear nucleus
B- inferior colliculus
C- lateral lemniscus
D- medial geniculate
B - Answers :A rarefaction click occurs when the
A- movement of a transducer diaphragm alternates in polarity relative to the tympanic
membrane on a random basis
B- initial movement of a transducer diaphragm is away from the tympanic membrane
C- movement of a transducer diaphragm alternates in polarity relative to the tympanic
membrane every second trial
D- initial movement of a transducer diaphragm is towards the tympanic membrane
B - Answers :The masking level suggested for the elimination of crossover responses is:
A- 100 dB peSPL
B- 60 dB SPL
C- Same intensity as the click
D- 60 dB nHL
A - Answers :What problem may occur when performing intraoperative BAEPs using
compressible tubing?
A- The compressible tubing can become obstructed and obscure the sound to the ear
B- The patient's postoperative hearing can become impaired
C- Their use may cause trauma to the ear canal and should be avoided
D- A contamination of the sterile field can occur
D - Answers :An appropriate BAEP stimulation rate to avoid synchronization with 60 Hz
artifact, would be
A- 20 per second
B- 10 per second
C- 6 per second
D- 9.5 per second
D - Answers :When recording BAEPs in the OR, some auditory stimulators utilize
several inches of tubing to connect the transducer and ear inserts which:
A- do not affect the latencies of the waveforms
B- are comparable to acoustically shielded headphones
,C- delay the signal to the transducer and can cause 60 Hz artifact
D- delays the arrival of the sound to the ear and separates stimulus artifact
A - Answers :If the patients threshold is 25 dB and the stimulator is set to 85 dB, then
the intensity is
A- 60 dB SL
B- 60 dB HL
C- 110 dB SL
D- 85 dB SL
C - Answers :Increases in latency of both right and left ABR wave V of 0.9 msec in a 10
minute period would most likely indicate:
A- ambient noise
B- a "kink" in the sound delivery tubing
C- temperature effects
D- auditory nerve damage
A - Answers :ABR wave V will increase in latency about
A- 0.2 ms per degree Centigrade
B- 1.0 ms per degree Centigrade
C- 2.0 ms per degree Centigrade
D- 0.5 ms per degree Centigrade
C - Answers :ABR waveforms cannot be recorded in all of the following conditions
except:
A- intensity levels of 30 dB peSPL
B- bone drilling
C- electrode montage Fpz-A(ipsi)
D- "kinking" of the sound delivery tube
B - Answers :Increasing the BAEP rep rate from 3.4 to 31.1
A- decreased latency, increased amplitude
B- increased latency, decreased amplitude
C- decreased latency, decreased amplitude
D- increased latency, increased amplitude
B - Answers :During BAEP from posterior fossa craniotomy, if reversible loss of all ipsi
BAEP responses occurs:
A- drug effect
B- complete recovery of neuronal function
C- hypothermia
D- probable neuronal deficit post-op
B - Answers :A stimulus rate that is suitable for ABR monitoring is
A- 20
B- 31.1
, C- 81.1
D- 4.1
D - Answers :"Hearing level" (HL) is defined as the:
A- lowest intensity that an average ear drum can hear
B- inverse of the sound pressure level
C- intensity of a long duration sound that has the same amplitude as the peak SPL of a
short duration sound
D- average threshold intensity of normally hearing young adults
A - Answers :Waves III to V on the ABR are probably generated
A- at the pons-midbrain area
B- at the cortex
C- at the medulla
D- at the cerebellum
D - Answers :The sound intensity equivalent for ABR clicks that is compared to the
physical measurement of sound is:
A- dB
B- dB HL
C- dB SL
D- dB pe SPL
A - Answers :Changing from standard headphones to insert transducers connected by
plastic tubing will change the latency of wave I by about
A- +0.9 msec
B- +0.5 msec
C- +2 msec
D- -0.5 msec
A - Answers :ABR rarefaction clicks from the transducer causes
A- movement of the tympanic membrane away from the cochlea
B- movement of the tympanic membrane toward the cochlea
C- elimination of stimulus artifact
D- movement toward and away from the cochlea
D - Answers :The ABR electrode montage would include
A- CP3, CP4, Cpz
B- Fpz, CP4, CPz
C- M1, M2, Oz
D- Cz, A1, A2
D - Answers :The type of pathology that would change the ABR interpeak latencies the
greatest is
A- pathology in the middle ear
B- pathology in the cochlea
