CNIM COMPREHENSIVE EXAM PREP
QUESTIONS AND SOLUTIONS VERIFIED
STUDY RESOURCE
●● 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
Answer: A- Is recordable over a generalized region of scalp
●● 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
Answer: B- Spinal cord damage can occur in only one tract causing loss
of MEP but not SSEP
,●● 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
Answer: C- 25 KHz
●● EEG will most likely disappear at what body temperature?
A- 16 º C
B- 36º C
C- 23 º C
D- 28º C
Answer: A- 16 º C
●● 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
Answer: B- 33 KHz
●● 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
Answer: B- 10-15 msec
●● 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
Answer: D- It will increase your risk of ground leakage
, ●● Which of the following is a barbiturate?
A- Methohexital
B- Remifentanyl
C- Nitrous Oxide
D- Curare
Answer: A- Methohexital
●● Tinel's sign
A- Cortex
B- Spinal cord
C- Muscle
D- Peripheral nerve
Answer: D- Peripheral nerve
●● Cortel-Dubousset instrumentation involves which of the following?
A- Derotation
B- Distraction
C- Sublaminar wires
QUESTIONS AND SOLUTIONS VERIFIED
STUDY RESOURCE
●● 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
Answer: A- Is recordable over a generalized region of scalp
●● 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
Answer: B- Spinal cord damage can occur in only one tract causing loss
of MEP but not SSEP
,●● 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
Answer: C- 25 KHz
●● EEG will most likely disappear at what body temperature?
A- 16 º C
B- 36º C
C- 23 º C
D- 28º C
Answer: A- 16 º C
●● 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
Answer: B- 33 KHz
●● 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
Answer: B- 10-15 msec
●● 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
Answer: D- It will increase your risk of ground leakage
, ●● Which of the following is a barbiturate?
A- Methohexital
B- Remifentanyl
C- Nitrous Oxide
D- Curare
Answer: A- Methohexital
●● Tinel's sign
A- Cortex
B- Spinal cord
C- Muscle
D- Peripheral nerve
Answer: D- Peripheral nerve
●● Cortel-Dubousset instrumentation involves which of the following?
A- Derotation
B- Distraction
C- Sublaminar wires
