CNIM FREQUENT MISS 2027 UPDATE WITH COMPLETE SOLUTIONS
Question 1.
A patient with a body temperature of 30 degrees C will have:
A- Decreased latencies B- Decreased latencies, decreased amplitudes C- Increased
latencies D- Increased latencies, decreased amplitudes
Correct Answer: C- Increased latencies
Question 2.
The P31 response to posterior tibial nerve stimulation:
A- Is recordable over a generalized region of scalp B- Is best recorded by an electrode
placed at CS5 C- Is generated by the thalamus D- Reflects post-synaptic activity in the
cervical spinal cord
Correct Answer: A- Is recordable over a generalized region of scalp
Question 3.
Why are SSEP and MEP used simultaneously?
A- Because MEPs indicate spinothalamic tract function B- Spinal cord damage can occur in
only one tract causing loss of MEP but not SSEP C- Because SSEP monitoring alone is not
very sensitive to changes in spinal cord function D- All of the above
Correct Answer: B- Spinal cord damage can occur in only one tract causing loss
of MEP but not SSEP
Question 4.
If the bin width of you system is 20 μS, then the highest frequency signal that can be
resolved is:
A- 50 KHz B- 100 KHz C- 25 KHz D- 20 KHz
Correct Answer: C- 25 KHz
Question 5.
EEG will most likely disappear at what body temperature?
A- 16 o C B- 36o C C- 23 o C D- 28o C
Correct Answer: A- 16 o C
Question 6.
What will be the frequency of a signal if in a 30 mS sweep the interval between each cycle
of the signal is 0.03 mS?
A- 3333 KHz B- 33 KHz C- 333 KHz D- 3 KHz
Correct Answer: B- 33 KHz
,Question 7.
According to the Guidelines what is the acceptable sweep for ABR's?
A- 20-30 msec B- 10-15 msec C- 5 msec D- 25 msec
Correct Answer: B- 10-15 msec
Question 8.
You do not want to use a power extension cord because:
A- It is a fire hazard B- It will mean that more current could be delivered to the patient if
the ground fails C- It may interfere with the operation of other devices in the operating
room D- It will increase your risk of ground leakage
Correct Answer: D- It will increase your risk of ground leakage
Question 9.
Which of the following is a barbiturate?
A- Methohexital B- Remifentanyl C- Nitrous Oxide D- Curare
Correct Answer: A- Methohexital
Question 10.
Tinel's sign
A- Cortex B- Spinal cord C- Muscle D- Peripheral nerve
Correct Answer: D- Peripheral nerve
Question 11.
Cortel-Dubousset instrumentation involves which of the following?
A- Derotation B- Distraction C- Sublaminar wires D- Intervertebral diskectomy
Correct Answer: A- Derotation
Question 12.
A loss of SSEP response would most likely occur ________ to the surgical site.
A- Anterior B- Caudal C- Posterior D- Rostral
Correct Answer: D- Rostral
Question 13.
What is the noise reduction technique that best reduces EKG artifact?
A- Common mode rejection B- Averaging C- Artifact reject D- Hicut filter
Correct Answer: C- Artifact reject
, Question 14.
When you have a salt bridge you will:
A- Be able to stimulate the underlying nerve better B- Create a lethal pathway for current
C- Max out your impedances D- Have difficulty stimulating the underlying nerve
Correct Answer: D- Have difficulty stimulating the underlying nerve
Question 15.
All of the following are benefits of EEG monitoring during carotid endarterectomy except:
A- Selective shunting B- Detection of hypoxia C- Detection of occlusion-associated
ischemia D- Detection of heparin dosage
Correct Answer: D- Detection of heparin dosage
Question 16.
If you have a 5 μV signal amplitude and a 20 μV noise amplitude, how many averages
would you need to get a signal to noise ratio of 2:1?
A- 100 B- 20 C- 64 D- 16
Correct Answer: C- 64
Question 17.
Which component would be most affected by a tumor by the intersection of the spinal cord
and medulla?
A- N13 B- P31 C- N20 D- EP
Correct Answer: A- N13
Question 18.
What type of electrode is recommended for monitoring facial nerve?
A- Cueva nerve electrode B- Ring electrode C- Surface D- Hook-wire
Correct Answer: D- Hook-wire
Question 19.
The stimulation rate is determined by the:
A- Stimulus intensity B- Nerve conduction velocity C- Analysis time D- Number of
stimulations
Correct Answer: C- Analysis time
Question 1.
A patient with a body temperature of 30 degrees C will have:
A- Decreased latencies B- Decreased latencies, decreased amplitudes C- Increased
latencies D- Increased latencies, decreased amplitudes
Correct Answer: C- Increased latencies
Question 2.
The P31 response to posterior tibial nerve stimulation:
A- Is recordable over a generalized region of scalp B- Is best recorded by an electrode
placed at CS5 C- Is generated by the thalamus D- Reflects post-synaptic activity in the
cervical spinal cord
Correct Answer: A- Is recordable over a generalized region of scalp
Question 3.
Why are SSEP and MEP used simultaneously?
A- Because MEPs indicate spinothalamic tract function B- Spinal cord damage can occur in
only one tract causing loss of MEP but not SSEP C- Because SSEP monitoring alone is not
very sensitive to changes in spinal cord function D- All of the above
Correct Answer: B- Spinal cord damage can occur in only one tract causing loss
of MEP but not SSEP
Question 4.
If the bin width of you system is 20 μS, then the highest frequency signal that can be
resolved is:
A- 50 KHz B- 100 KHz C- 25 KHz D- 20 KHz
Correct Answer: C- 25 KHz
Question 5.
EEG will most likely disappear at what body temperature?
A- 16 o C B- 36o C C- 23 o C D- 28o C
Correct Answer: A- 16 o C
Question 6.
What will be the frequency of a signal if in a 30 mS sweep the interval between each cycle
of the signal is 0.03 mS?
A- 3333 KHz B- 33 KHz C- 333 KHz D- 3 KHz
Correct Answer: B- 33 KHz
,Question 7.
According to the Guidelines what is the acceptable sweep for ABR's?
A- 20-30 msec B- 10-15 msec C- 5 msec D- 25 msec
Correct Answer: B- 10-15 msec
Question 8.
You do not want to use a power extension cord because:
A- It is a fire hazard B- It will mean that more current could be delivered to the patient if
the ground fails C- It may interfere with the operation of other devices in the operating
room D- It will increase your risk of ground leakage
Correct Answer: D- It will increase your risk of ground leakage
Question 9.
Which of the following is a barbiturate?
A- Methohexital B- Remifentanyl C- Nitrous Oxide D- Curare
Correct Answer: A- Methohexital
Question 10.
Tinel's sign
A- Cortex B- Spinal cord C- Muscle D- Peripheral nerve
Correct Answer: D- Peripheral nerve
Question 11.
Cortel-Dubousset instrumentation involves which of the following?
A- Derotation B- Distraction C- Sublaminar wires D- Intervertebral diskectomy
Correct Answer: A- Derotation
Question 12.
A loss of SSEP response would most likely occur ________ to the surgical site.
A- Anterior B- Caudal C- Posterior D- Rostral
Correct Answer: D- Rostral
Question 13.
What is the noise reduction technique that best reduces EKG artifact?
A- Common mode rejection B- Averaging C- Artifact reject D- Hicut filter
Correct Answer: C- Artifact reject
, Question 14.
When you have a salt bridge you will:
A- Be able to stimulate the underlying nerve better B- Create a lethal pathway for current
C- Max out your impedances D- Have difficulty stimulating the underlying nerve
Correct Answer: D- Have difficulty stimulating the underlying nerve
Question 15.
All of the following are benefits of EEG monitoring during carotid endarterectomy except:
A- Selective shunting B- Detection of hypoxia C- Detection of occlusion-associated
ischemia D- Detection of heparin dosage
Correct Answer: D- Detection of heparin dosage
Question 16.
If you have a 5 μV signal amplitude and a 20 μV noise amplitude, how many averages
would you need to get a signal to noise ratio of 2:1?
A- 100 B- 20 C- 64 D- 16
Correct Answer: C- 64
Question 17.
Which component would be most affected by a tumor by the intersection of the spinal cord
and medulla?
A- N13 B- P31 C- N20 D- EP
Correct Answer: A- N13
Question 18.
What type of electrode is recommended for monitoring facial nerve?
A- Cueva nerve electrode B- Ring electrode C- Surface D- Hook-wire
Correct Answer: D- Hook-wire
Question 19.
The stimulation rate is determined by the:
A- Stimulus intensity B- Nerve conduction velocity C- Analysis time D- Number of
stimulations
Correct Answer: C- Analysis time
