____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
CNIM PRACTICE QUESTIONS AND
ANSWERS
ANASTAMOSIS? - ✔✔- -CONNECTION or opening BETWEEN two things
(especially cavities or passages) that are normally diverging or branching, such
as between blood vessels.
-COMMUNICATION BETWEEN ARTERIES
What causes the most airborne bacteria in OR?
a. blood on gown
b. blood spill
c. skin shed
d. patient vent - ✔✔- c. skin shed
Nerve that innervates 4th and 5th fingers? - ✔✔- Ulnar Nerve
Problem with Bilateral Synchronus Stim? - ✔✔- Can mask unilateral problems
No N20 at baseline could mean? - ✔✔- Stroke
What should you check 1st if you lose all waves? - ✔✔- Stimulator
Which of the following devices measures electrode resistance?
1. Ammeter
2. Ohmmeter
3. Voltmeter
4. Photometer - ✔✔- 2. Ohmmeter
If an evoked potential has a voltage of 10uV and the associated noise has a
voltage of 50uV, what is the signal to noise ratio after 100 averaged responses?
1. 1:1
2. 1:2
3. 2:1
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
,____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
4. 5:1 - ✔✔- 3. 2:1
To display median nerve SSEP response as an upward deflection, which of the
following must be known?
1. Waveform polarity and latency of the response
2. Waveform polarity and polarity convention of the amplifier inputs
3. Polarity convention of amplifier inputs and amplitude of the response
4. Latency of the response and polarity convention of the amplifier inputs - ✔✔-
2. Waveform polarity and polarity convention of the amplifier inputs
If an amplifier is rated as having 120 dB common mode rejection rate, which of
the following ratios of in-phase to out-of-phase signals would be expected?
1. 10,000:1
2. 100,000:1
3. 500,000:1
4. 1,000,000:1 - ✔✔- 4. 1,000,000:1
Which of the following cranial nerves innervates the extraocular muscles?
1. Optic
2. Facial
3. Abducens
4. Trigeminal - ✔✔- 3. Abducens
Which of the following is an example of a SSEP far-field subcortical potential?
1. N20
2. N34
3. Erbs point
4. Popliteal Fossa - ✔✔- 2. N34
Which of the following opposes any change in current?
1. Capacitance
2. Impedance
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
,____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
3. Inductance
4. Resistance - ✔✔- 3. Inductance
Which of the following electrode materials has little electrode potential drift and a
long time constant?
1. Tin
2. Gold
3. Silver
4. Stainless Steel - ✔✔- 2. Gold
Where should epidural electrodes be placed?
1. On the dura
2. In the spinal cord
3. Within the dural membrane
4. Between the dura and the spinal cord - ✔✔- 1. on the dura
With referential recording, maximal amplitude cortical evoked potentials following
stimulation of the left posterior tibial nerve usually would be found between?
1. C3 and CZ
2. C4 and P4
3. FZ and CZ
4. C4 and CZ - ✔✔- 1. C3 and CZ
For preoperative posterior tibial somatosensory evoked potentials, which of the
following would be the best ipsilateral location for the ground electrode?
1. Forearm
2. Calf
3. Shoulder
4. Palm - ✔✔- 2. Calf
To record the afferent volley after posterior tibial nerve stimulation, an electrode
should be placed on the?
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
,____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
1. Mastoid
2. Erbs point
3. T5 spine
4. Index Finger - ✔✔- 3. T5 spine
Impedances of applied electrodes should be?
1. balanced and below 5,000 ohms
2. balanced and above 5,000 ohms
3. unbalanced and below 5,000 ohms
4. unbalanced and above 5,000 ohms - ✔✔- 1. balanced and below 5,000 ohms
An increase in stimulation intensity cause a linear increase of which of the
following SSEP components?
1. N20
2. N45
3. P31
4. P37 - ✔✔- 3. P31
Epidural electrodes are made of platinum because?
1. it is the most durable metal
2. it is the lowest impedance metal
3. the chance of allergic reaction is eliminated
4. other metals may become toxic when currents are applied - ✔✔- 4. other
metals may become toxic when currents are applied
During a median nerve preoperative study, a patient has discomfort at the wrist.
Stimulation electrodes are 10mm gold disk, stimulus intensity is 20 mA, and
stimulus duration is 100 usec. Which of the following would most likely reduce
the patient's discomfort while maintaining adequate stimulation?
1. Increase stimulus duration
2. Decrease number of repetitions
3. Use smaller stimulating electrodes
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
CNIM PRACTICE QUESTIONS AND
ANSWERS
ANASTAMOSIS? - ✔✔- -CONNECTION or opening BETWEEN two things
(especially cavities or passages) that are normally diverging or branching, such
as between blood vessels.
-COMMUNICATION BETWEEN ARTERIES
What causes the most airborne bacteria in OR?
a. blood on gown
b. blood spill
c. skin shed
d. patient vent - ✔✔- c. skin shed
Nerve that innervates 4th and 5th fingers? - ✔✔- Ulnar Nerve
Problem with Bilateral Synchronus Stim? - ✔✔- Can mask unilateral problems
No N20 at baseline could mean? - ✔✔- Stroke
What should you check 1st if you lose all waves? - ✔✔- Stimulator
Which of the following devices measures electrode resistance?
1. Ammeter
2. Ohmmeter
3. Voltmeter
4. Photometer - ✔✔- 2. Ohmmeter
If an evoked potential has a voltage of 10uV and the associated noise has a
voltage of 50uV, what is the signal to noise ratio after 100 averaged responses?
1. 1:1
2. 1:2
3. 2:1
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
,____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
4. 5:1 - ✔✔- 3. 2:1
To display median nerve SSEP response as an upward deflection, which of the
following must be known?
1. Waveform polarity and latency of the response
2. Waveform polarity and polarity convention of the amplifier inputs
3. Polarity convention of amplifier inputs and amplitude of the response
4. Latency of the response and polarity convention of the amplifier inputs - ✔✔-
2. Waveform polarity and polarity convention of the amplifier inputs
If an amplifier is rated as having 120 dB common mode rejection rate, which of
the following ratios of in-phase to out-of-phase signals would be expected?
1. 10,000:1
2. 100,000:1
3. 500,000:1
4. 1,000,000:1 - ✔✔- 4. 1,000,000:1
Which of the following cranial nerves innervates the extraocular muscles?
1. Optic
2. Facial
3. Abducens
4. Trigeminal - ✔✔- 3. Abducens
Which of the following is an example of a SSEP far-field subcortical potential?
1. N20
2. N34
3. Erbs point
4. Popliteal Fossa - ✔✔- 2. N34
Which of the following opposes any change in current?
1. Capacitance
2. Impedance
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
,____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
3. Inductance
4. Resistance - ✔✔- 3. Inductance
Which of the following electrode materials has little electrode potential drift and a
long time constant?
1. Tin
2. Gold
3. Silver
4. Stainless Steel - ✔✔- 2. Gold
Where should epidural electrodes be placed?
1. On the dura
2. In the spinal cord
3. Within the dural membrane
4. Between the dura and the spinal cord - ✔✔- 1. on the dura
With referential recording, maximal amplitude cortical evoked potentials following
stimulation of the left posterior tibial nerve usually would be found between?
1. C3 and CZ
2. C4 and P4
3. FZ and CZ
4. C4 and CZ - ✔✔- 1. C3 and CZ
For preoperative posterior tibial somatosensory evoked potentials, which of the
following would be the best ipsilateral location for the ground electrode?
1. Forearm
2. Calf
3. Shoulder
4. Palm - ✔✔- 2. Calf
To record the afferent volley after posterior tibial nerve stimulation, an electrode
should be placed on the?
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
,____%%$^$&^%@#$%CNIM
________________%%$^$&^%@#$%CNIM
10/7/2026, 6:49:46 AM______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS
PRACTICE AND
QUESTIONS
ANSWERS.pdf10/7/2026,
AND ANSWERS.pdf10/7/2026,
PRACTICE
6:45:09 AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
QUESTIONS
6:45:09AND
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$
ANSWERS.pdf10/7/2026, 6:45:09 AM#
1. Mastoid
2. Erbs point
3. T5 spine
4. Index Finger - ✔✔- 3. T5 spine
Impedances of applied electrodes should be?
1. balanced and below 5,000 ohms
2. balanced and above 5,000 ohms
3. unbalanced and below 5,000 ohms
4. unbalanced and above 5,000 ohms - ✔✔- 1. balanced and below 5,000 ohms
An increase in stimulation intensity cause a linear increase of which of the
following SSEP components?
1. N20
2. N45
3. P31
4. P37 - ✔✔- 3. P31
Epidural electrodes are made of platinum because?
1. it is the most durable metal
2. it is the lowest impedance metal
3. the chance of allergic reaction is eliminated
4. other metals may become toxic when currents are applied - ✔✔- 4. other
metals may become toxic when currents are applied
During a median nerve preoperative study, a patient has discomfort at the wrist.
Stimulation electrodes are 10mm gold disk, stimulus intensity is 20 mA, and
stimulus duration is 100 usec. Which of the following would most likely reduce
the patient's discomfort while maintaining adequate stimulation?
1. Increase stimulus duration
2. Decrease number of repetitions
3. Use smaller stimulating electrodes
____%%$^$&^%@#$%CNIM
ND ANSWERS.pdf______________________%%$^$&^%@#$%CNIM
______________________%%$^$&^%@#$%CNIM
PRACTICE QUESTIONS AND ANSWERS.pdf10/7/2026,
PRACTICEPRACTICE
QUESTIONSQUESTIONS
AND
6:45:09
ANSWERS.pdf10/7/2026,
AM#*(^&@$*@*()$*($)$()$*&^&$U*)((*$&*$(($*$($
AND ANSWERS.pdf10/7/2026,
6:45:09 AM#*(^&@$*@*()$*($)$()$
6:45:09 AM#*(^&@$*@*
