Page | 1
CNIM Questions with Detailed Verified
Answers
Question: During electrocautery you should...
Answer: Pause Recording
Question:
SSEPs are less reliable in patients with...
Answer: Neuromuscular disease
Question:
After-discharges occur after what?
Answer: Direct cortical stimulation
Question:
In order to reduce stimulus artifact, the ground electrode shoudl be placed...
Answer: On the limb between the stimulating and recording electrodes
Question:
Which of the following is the most effected by halogenated agents?
Answer: Posterior Tibial cortical potential
Question:
The nerve roott entry levels for the ulnar nerve are..
Answer: C8-T1
Question:
, Page | 2
When doing a C5 decompression involving the axillary nerve which muscle
should you record from?
Answer: Deltoid
Question:
Train stimuli are used for TcMEP's in order to...
Answer: Overcome anesthetic suppression of synaptic transmissions in the
motor pathway
Question:
What is the preferred alternate when the PTN is unavailable?
Answer: Peroneal
Question:
Nyquist Frequency
Answer: One half the frequency of the recorded signal
Question:
A decrease in the power spectral edge indicates..
Answer: a greater proportion of EEG power at the lower frequencies
Question:
Why do we use electrodes with the same metals?
Answer: To prevent electrode polarization
Question:
, Page | 3
Which of the following drugs has an appreciable effect on peripheral nerve
APs
Answer: none
Question:
Which one of the following is an inhibitory neurotransmitter
Answer: GABA
Question:
Stimulating the median nerve at the wrist yields an Erbs point response at
10ms and an CV of 60m/s. What is the distance between the cathode and the
Erb's point recording electrode
Answer: 60cm
Question:
What are SSEP and MEP used simultaneously?
Answer: Spinal cord damage can occur in only one tract causing loss of MEp
but not SSEP
Question:
Common Mode Rejection
Answer: Is the cancellation of signals that are common to both inputs of the
ampifier
Question:
Ankylosis
, Page | 4
Answer: Fused Joint
Question:
Where is the ABR wave V generated?
Answer: Mdbrain
Question:
If you cannot replace an electrode that has come out during surgery you?
Answer: use a duplicate
Question:
A patient with the temperature of 30 debrees C will have
Answer: increased latencies
Question:
Which would not be considered contamination of the sterile field
Answer: reaching underneath the surgeon's gown to grab his pager
Question:
Personal Protection Devices (PPDs) consist of
Answer: gloves, masks, gowns
Question:
When an electrode fall on the floor you
Answer: you immediately pick it up to dispose of it in a sharps container
Question:
CNIM Questions with Detailed Verified
Answers
Question: During electrocautery you should...
Answer: Pause Recording
Question:
SSEPs are less reliable in patients with...
Answer: Neuromuscular disease
Question:
After-discharges occur after what?
Answer: Direct cortical stimulation
Question:
In order to reduce stimulus artifact, the ground electrode shoudl be placed...
Answer: On the limb between the stimulating and recording electrodes
Question:
Which of the following is the most effected by halogenated agents?
Answer: Posterior Tibial cortical potential
Question:
The nerve roott entry levels for the ulnar nerve are..
Answer: C8-T1
Question:
, Page | 2
When doing a C5 decompression involving the axillary nerve which muscle
should you record from?
Answer: Deltoid
Question:
Train stimuli are used for TcMEP's in order to...
Answer: Overcome anesthetic suppression of synaptic transmissions in the
motor pathway
Question:
What is the preferred alternate when the PTN is unavailable?
Answer: Peroneal
Question:
Nyquist Frequency
Answer: One half the frequency of the recorded signal
Question:
A decrease in the power spectral edge indicates..
Answer: a greater proportion of EEG power at the lower frequencies
Question:
Why do we use electrodes with the same metals?
Answer: To prevent electrode polarization
Question:
, Page | 3
Which of the following drugs has an appreciable effect on peripheral nerve
APs
Answer: none
Question:
Which one of the following is an inhibitory neurotransmitter
Answer: GABA
Question:
Stimulating the median nerve at the wrist yields an Erbs point response at
10ms and an CV of 60m/s. What is the distance between the cathode and the
Erb's point recording electrode
Answer: 60cm
Question:
What are SSEP and MEP used simultaneously?
Answer: Spinal cord damage can occur in only one tract causing loss of MEp
but not SSEP
Question:
Common Mode Rejection
Answer: Is the cancellation of signals that are common to both inputs of the
ampifier
Question:
Ankylosis
, Page | 4
Answer: Fused Joint
Question:
Where is the ABR wave V generated?
Answer: Mdbrain
Question:
If you cannot replace an electrode that has come out during surgery you?
Answer: use a duplicate
Question:
A patient with the temperature of 30 debrees C will have
Answer: increased latencies
Question:
Which would not be considered contamination of the sterile field
Answer: reaching underneath the surgeon's gown to grab his pager
Question:
Personal Protection Devices (PPDs) consist of
Answer: gloves, masks, gowns
Question:
When an electrode fall on the floor you
Answer: you immediately pick it up to dispose of it in a sharps container
Question:
