CNIM 2026-2027 TEST QUESTIONS WITH ALL CORRECT &
100% VERIFIED ANSWERS |ACTUAL COMPLETE EXAM |
ALREADY GRADED A+ (JUST RELEASED)
ANASTAMOSIS? ✔Correct Answer--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 ✔Correct Answer-c. skin shed
Nerve that innervates 4th and 5th fingers? ✔Correct Answer-Ulnar Nerve
Problem with Bilateral Synchronus Stim? ✔Correct Answer-Can mask unilateral problems
No N20 at baseline could mean? ✔Correct Answer-Stroke
What should you check 1st if you lose all waves? ✔Correct Answer-Stimulator
Which of the following devices measures electrode resistance?
1. Ammeter
2. Ohmmeter
3. Voltmeter
4. Photometer ✔Correct Answer-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
4. 5:1 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-4. 1,000,000:1
Which of the following cranial nerves innervates the extraocular muscles?
1. Optic
2. Facial
3. Abducens
4. Trigeminal ✔Correct Answer-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 ✔Correct Answer-2. N34
Which of the following opposes any change in current?
1. Capacitance
2. Impedance
3. Inductance
4. Resistance ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-2. Calf
To record the afferent volley after posterior tibial nerve stimulation, an electrode should be
placed on the?
1. Mastoid
2. Erbs point
3. T5 spine
4. Index Finger ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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
4. Decrease stimulus intensity below motor threshold ✔Correct Answer-2. Decrease number
of repititions
Which of the following would enhance Wave I of the BAEP?
1. Increase the rate
2. Increase the intensity
3. Decrease the analysis time
4. Decrease the number of repetitions ✔Correct Answer-2. Increase the intensity
In BAEPs wave I can most easily be differentiated from cochlear microphonics based upon?
1. amplitude
2. morphology
3. click polarity
4. absence in contralateral recording ✔Correct Answer-3. click polarity
What is the interstimulus interval of a 50hz click stimulus?
1. 0.02 msec
2. 0.20 msec
3. 0.50 msec
4. 20.00 msec ✔Correct Answer-4. 20.00 msec
Contralateral masking should be used during BAEPs to?
1. help the patient relax
100% VERIFIED ANSWERS |ACTUAL COMPLETE EXAM |
ALREADY GRADED A+ (JUST RELEASED)
ANASTAMOSIS? ✔Correct Answer--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 ✔Correct Answer-c. skin shed
Nerve that innervates 4th and 5th fingers? ✔Correct Answer-Ulnar Nerve
Problem with Bilateral Synchronus Stim? ✔Correct Answer-Can mask unilateral problems
No N20 at baseline could mean? ✔Correct Answer-Stroke
What should you check 1st if you lose all waves? ✔Correct Answer-Stimulator
Which of the following devices measures electrode resistance?
1. Ammeter
2. Ohmmeter
3. Voltmeter
4. Photometer ✔Correct Answer-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
4. 5:1 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-4. 1,000,000:1
Which of the following cranial nerves innervates the extraocular muscles?
1. Optic
2. Facial
3. Abducens
4. Trigeminal ✔Correct Answer-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 ✔Correct Answer-2. N34
Which of the following opposes any change in current?
1. Capacitance
2. Impedance
3. Inductance
4. Resistance ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-2. Calf
To record the afferent volley after posterior tibial nerve stimulation, an electrode should be
placed on the?
1. Mastoid
2. Erbs point
3. T5 spine
4. Index Finger ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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 ✔Correct Answer-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
4. Decrease stimulus intensity below motor threshold ✔Correct Answer-2. Decrease number
of repititions
Which of the following would enhance Wave I of the BAEP?
1. Increase the rate
2. Increase the intensity
3. Decrease the analysis time
4. Decrease the number of repetitions ✔Correct Answer-2. Increase the intensity
In BAEPs wave I can most easily be differentiated from cochlear microphonics based upon?
1. amplitude
2. morphology
3. click polarity
4. absence in contralateral recording ✔Correct Answer-3. click polarity
What is the interstimulus interval of a 50hz click stimulus?
1. 0.02 msec
2. 0.20 msec
3. 0.50 msec
4. 20.00 msec ✔Correct Answer-4. 20.00 msec
Contralateral masking should be used during BAEPs to?
1. help the patient relax
