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CNIM EXAM 2|| CNIM ACTUAL EXAM WITH ALL
QUESTIONS AND 100% CORRECT ANSWERS
ALREADY GRADED A+|| LATEST AND FULLY
COVERED 2024-2025 WITH VERIFIED EXPERT
SOLUTIONS|| ASSURED PASS!!!
When recording BAEPs in the OR, some auditory simulators 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 -
ANSWER> d) delays the arrival of the sound to the ear and separates stimulus
artifact
Following the final application of connective forces to the spinal column, the
spinal cord should typically be monitored for at least:
a) 5 minutes
b) 10 minutes
c) 20 minutes
d) 30 minutes - ANSWER> d) 30 minutes
For preoperative posterior tibial somatosensory evoked potentials, which of the
following would be the best ipsilateral location for the ground electrode?
1. Forearm
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2. Calf
3. Shoulder
4. Palm - 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 - 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 - 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
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4. P37 - 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 - 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 - 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 - ANSWER> 2. Increase the intensity
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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 - 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 - ANSWER> 4. 20.00 msec
Contralateral masking should be used during BAEPs to?
1. help the patient relax
2. enhance wave 1 amplitude
3. seperate wave IV/V complex
4. prevent crossover responses - ANSWER> 4. prevent crossover responses
The complete absence of a BAEP is most likely the result of?
1. sedation
CNIM EXAM 2|| CNIM ACTUAL EXAM WITH ALL
QUESTIONS AND 100% CORRECT ANSWERS
ALREADY GRADED A+|| LATEST AND FULLY
COVERED 2024-2025 WITH VERIFIED EXPERT
SOLUTIONS|| ASSURED PASS!!!
When recording BAEPs in the OR, some auditory simulators 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 -
ANSWER> d) delays the arrival of the sound to the ear and separates stimulus
artifact
Following the final application of connective forces to the spinal column, the
spinal cord should typically be monitored for at least:
a) 5 minutes
b) 10 minutes
c) 20 minutes
d) 30 minutes - ANSWER> d) 30 minutes
For preoperative posterior tibial somatosensory evoked potentials, which of the
following would be the best ipsilateral location for the ground electrode?
1. Forearm
, P a g e |2
2. Calf
3. Shoulder
4. Palm - 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 - 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 - 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
, P a g e |3
4. P37 - 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 - 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 - 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 - ANSWER> 2. Increase the intensity
, P a g e |4
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 - 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 - ANSWER> 4. 20.00 msec
Contralateral masking should be used during BAEPs to?
1. help the patient relax
2. enhance wave 1 amplitude
3. seperate wave IV/V complex
4. prevent crossover responses - ANSWER> 4. prevent crossover responses
The complete absence of a BAEP is most likely the result of?
1. sedation
