CNIM TEST exam questions and answers
In BAEP's, cochlear nucleus lesion causes? - correct answer ✅Increased III-V,
increased I-V
Which modality is most useful in monitoring the integrity of the corticospinal
tracts during resection of an intramedullary spinal cord tumor? - correct answer
✅D-Waves
The stimulus used in a brainstem auditory evoked potential study is a click with a
peak acoustic power in the range of - correct answer ✅2000 to 4000Hz
Which of the following tibial nerve responses is not a near field response? -
correct answer ✅N31
How many amperes of current will flow in a circuit containing a 2V battery and 10
ohms of resistance? - correct answer ✅0.2 amps
In BAEP's blood, betadine or irrigation fluid in tubing causes: - correct answer
✅Increase in absolute latency, normal inter-peak latencies
In averaging, the period of analysis is called _______ or ________. - correct
answer ✅Epoch, sweep length
,CNIM TEST exam questions and answers
While monitoring BAEP, there was a prolongation of wave I through V by more
than 2 msec. Which of the following choices is NOT a possible cause? - correct
answer ✅Increase of isoflurane anesthesia
Involuntary movement - correct answer ✅Ataxia
Smaller surface of stimulating electrodes: - correct answer ✅Higher Current
Density
During posterior fossa surgery, when BAEPs are used for monitoring brainstem
function, it is most important to: - correct answer ✅Stimulate and record from
the contralateral side
P100 of a VEP will have the highest amplitude in which derivation? - correct
answer ✅MO-Fz
Cranial nerve VII must be monitored concurrently with BAERs. - correct answer
✅True
,CNIM TEST exam questions and answers
Nerves of the body, such as median, ulnar, and femoral are formed from the: -
correct answer ✅Dorsal and ventral rami
Upper motor neuron extends from: - correct answer ✅Precentral gyrus to ventral
horn
Increasing the stimulus rate of BAEPs - correct answer ✅Decreases amplitude
and increases latency
Which of the following is the normal interocular latency difference of P100? -
correct answer ✅Less than 15 msec
An amplifier sensitivity setting that produces a vertical deflection of 1cm with an
input of 10mV is: - correct answer ✅1mV/mm
When identifying wave IV and V of a BAEP, which of the following would be most
helpful? - correct answer ✅Cz-Contra ear montage
The maximum leakage current should be - correct answer ✅100 uA
Wave V is usually the most prominent peak after - correct answer ✅5.5 msec
, CNIM TEST exam questions and answers
Which of the following montages will best demonstrate waves I through V of the
BAEP? - correct answer ✅Cz-ipsilateral ear
P13 Generator - correct answer ✅Spinomedullary junction
An electrode recording from Erb's point is placed - correct answer ✅2-3 cm
above the clavicle
In BAEP's, perforated or hardened tympanic membrane causes: - correct answer
✅Increase in absolute latency, normal inter-peak latencies
Which of the following temperatures should be annotated as being hypothermic?
- correct answer ✅34 degrees C
Dyskinesia: - correct answer ✅Abnormal Movement
Sensory supply of the posterior 1/3rd of the tongue is from which nerve? - correct
answer ✅Glossopharyngeal
In BAEP's, cochlear nucleus lesion causes? - correct answer ✅Increased III-V,
increased I-V
Which modality is most useful in monitoring the integrity of the corticospinal
tracts during resection of an intramedullary spinal cord tumor? - correct answer
✅D-Waves
The stimulus used in a brainstem auditory evoked potential study is a click with a
peak acoustic power in the range of - correct answer ✅2000 to 4000Hz
Which of the following tibial nerve responses is not a near field response? -
correct answer ✅N31
How many amperes of current will flow in a circuit containing a 2V battery and 10
ohms of resistance? - correct answer ✅0.2 amps
In BAEP's blood, betadine or irrigation fluid in tubing causes: - correct answer
✅Increase in absolute latency, normal inter-peak latencies
In averaging, the period of analysis is called _______ or ________. - correct
answer ✅Epoch, sweep length
,CNIM TEST exam questions and answers
While monitoring BAEP, there was a prolongation of wave I through V by more
than 2 msec. Which of the following choices is NOT a possible cause? - correct
answer ✅Increase of isoflurane anesthesia
Involuntary movement - correct answer ✅Ataxia
Smaller surface of stimulating electrodes: - correct answer ✅Higher Current
Density
During posterior fossa surgery, when BAEPs are used for monitoring brainstem
function, it is most important to: - correct answer ✅Stimulate and record from
the contralateral side
P100 of a VEP will have the highest amplitude in which derivation? - correct
answer ✅MO-Fz
Cranial nerve VII must be monitored concurrently with BAERs. - correct answer
✅True
,CNIM TEST exam questions and answers
Nerves of the body, such as median, ulnar, and femoral are formed from the: -
correct answer ✅Dorsal and ventral rami
Upper motor neuron extends from: - correct answer ✅Precentral gyrus to ventral
horn
Increasing the stimulus rate of BAEPs - correct answer ✅Decreases amplitude
and increases latency
Which of the following is the normal interocular latency difference of P100? -
correct answer ✅Less than 15 msec
An amplifier sensitivity setting that produces a vertical deflection of 1cm with an
input of 10mV is: - correct answer ✅1mV/mm
When identifying wave IV and V of a BAEP, which of the following would be most
helpful? - correct answer ✅Cz-Contra ear montage
The maximum leakage current should be - correct answer ✅100 uA
Wave V is usually the most prominent peak after - correct answer ✅5.5 msec
, CNIM TEST exam questions and answers
Which of the following montages will best demonstrate waves I through V of the
BAEP? - correct answer ✅Cz-ipsilateral ear
P13 Generator - correct answer ✅Spinomedullary junction
An electrode recording from Erb's point is placed - correct answer ✅2-3 cm
above the clavicle
In BAEP's, perforated or hardened tympanic membrane causes: - correct answer
✅Increase in absolute latency, normal inter-peak latencies
Which of the following temperatures should be annotated as being hypothermic?
- correct answer ✅34 degrees C
Dyskinesia: - correct answer ✅Abnormal Movement
Sensory supply of the posterior 1/3rd of the tongue is from which nerve? - correct
answer ✅Glossopharyngeal
