CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
An increase in stimulation intensity causes 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 10 mm gold disk, stimulus
intensity is 20 mA, and stimulus duration is 100 usec. Which of the
,CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
following would most likely reduce the patients discomfort while
maintaining adequate stimulation?
1. Increase stimulus duration
2. Use larger stimulating electrode
3. Use smaller stimulating electrode
4. Decrease stimulus intensity below motor threshold -
correct answer ✅2. Use larger stimulating electrode
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
,CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
3. Click polarity
4. Absence in contralateral recording -
correct answer ✅3. Click polarity
What is the interstimulus interval of a 50 Hz 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
2. Enhance wave I amplitude
3. Separate the IV/V complex
4. Prevent crossover responses -
correct answer ✅4. Prevent crossover responses
The complete absence of a BAEP is most likely the result of
, CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
1. Sedation
2. Multiple sclerosis
3. Severe hearing loss
4. A normal age variant -
correct answer ✅3. Severe hearing loss
Identification of wave V of the BAEP may require
1. Tympanic electrodes
2. Bilateral stimulation
3. Decreasing stimulus intensity
4. Use of a noncephalic reference -
correct answer ✅3. Decreasing stimulus intensity
In spinal surgery, the primary purpose of the popliteal fossa
recording electrode is to
1. Verify adequacy of stimulus
2. Limit current spread
3. Confirm amplifier integrity
Exam Questions & Answers (Grade
A+)
An increase in stimulation intensity causes 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 10 mm gold disk, stimulus
intensity is 20 mA, and stimulus duration is 100 usec. Which of the
,CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
following would most likely reduce the patients discomfort while
maintaining adequate stimulation?
1. Increase stimulus duration
2. Use larger stimulating electrode
3. Use smaller stimulating electrode
4. Decrease stimulus intensity below motor threshold -
correct answer ✅2. Use larger stimulating electrode
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
,CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
3. Click polarity
4. Absence in contralateral recording -
correct answer ✅3. Click polarity
What is the interstimulus interval of a 50 Hz 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
2. Enhance wave I amplitude
3. Separate the IV/V complex
4. Prevent crossover responses -
correct answer ✅4. Prevent crossover responses
The complete absence of a BAEP is most likely the result of
, CNIM Apparently on the Actual Test
Exam Questions & Answers (Grade
A+)
1. Sedation
2. Multiple sclerosis
3. Severe hearing loss
4. A normal age variant -
correct answer ✅3. Severe hearing loss
Identification of wave V of the BAEP may require
1. Tympanic electrodes
2. Bilateral stimulation
3. Decreasing stimulus intensity
4. Use of a noncephalic reference -
correct answer ✅3. Decreasing stimulus intensity
In spinal surgery, the primary purpose of the popliteal fossa
recording electrode is to
1. Verify adequacy of stimulus
2. Limit current spread
3. Confirm amplifier integrity
