CNIM Exam Questions with Correct Answers
During electrocautery you should...
Pause Recording
SSEPs are less reliable in patients with...
Neuromuscular disease
After-discharges occur after what?
Direct cortical stimulation
In order to reduce stimulus artifact, the ground electrode shoudl be placed...
On the limb between the stimulating and recording electrodes
Which of the following is the most effected by halogenated agents?
Posterior Tibial cortical potential
The nerve roott entry levels for the ulnar nerve are..
C8-T1
When doing a C5 decompression involving the axillary nerve which muscle should you
record from?
Deltoid
Train stimuli are used for TcMEP's in order to...
Overcome anesthetic suppression of synaptic transmissions in the motor pathway
What is the preferred alternate when the PTN is unavailable?
Peroneal
,Nyquist Frequency
One half the frequency of the recorded signal
A decrease in the power spectral edge indicates..
a greater proportion of EEG power at the lower frequencies
Why do we use electrodes with the same metals?
To prevent electrode polarization
Which of the following drugs has an appreciable effect on peripheral nerve APs
none
Which one of the following is an inhibitory neurotransmitter
GABA
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
60cm
What are SSEP and MEP used simultaneously?
Spinal cord damage can occur in only one tract causing loss of MEp but not SSEP
Common Mode Rejection
Is the cancellation of signals that are common to both inputs of the ampifier
Ankylosis
Fused Joint
, Where is the ABR wave V generated?
Mdbrain
If you cannot replace an electrode that has come out during surgery you?
use a duplicate
A patient with the temperature of 30 debrees C will have
increased latencies
Which would not be considered contamination of the sterile field
reaching underneath the surgeon's gown to grab his pager
Personal Protection Devices (PPDs) consist of
gloves, masks, gowns
When an electrode fall on the floor you
you immediately pick it up to dispose of it in a sharps container
when testing BAEP's you get a wave I on your contralateral ear montage. What do you
do?
Check ear phones for porper side stimulation
When no phase reversal is present in an anterior-posterior cortical grid recording
The maximum amplitude response is closest to the central sulcus
The Artery of Admkiewicz is
a major feeder vessel to the spinal cord
Which of the following is a barbiturate?
During electrocautery you should...
Pause Recording
SSEPs are less reliable in patients with...
Neuromuscular disease
After-discharges occur after what?
Direct cortical stimulation
In order to reduce stimulus artifact, the ground electrode shoudl be placed...
On the limb between the stimulating and recording electrodes
Which of the following is the most effected by halogenated agents?
Posterior Tibial cortical potential
The nerve roott entry levels for the ulnar nerve are..
C8-T1
When doing a C5 decompression involving the axillary nerve which muscle should you
record from?
Deltoid
Train stimuli are used for TcMEP's in order to...
Overcome anesthetic suppression of synaptic transmissions in the motor pathway
What is the preferred alternate when the PTN is unavailable?
Peroneal
,Nyquist Frequency
One half the frequency of the recorded signal
A decrease in the power spectral edge indicates..
a greater proportion of EEG power at the lower frequencies
Why do we use electrodes with the same metals?
To prevent electrode polarization
Which of the following drugs has an appreciable effect on peripheral nerve APs
none
Which one of the following is an inhibitory neurotransmitter
GABA
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
60cm
What are SSEP and MEP used simultaneously?
Spinal cord damage can occur in only one tract causing loss of MEp but not SSEP
Common Mode Rejection
Is the cancellation of signals that are common to both inputs of the ampifier
Ankylosis
Fused Joint
, Where is the ABR wave V generated?
Mdbrain
If you cannot replace an electrode that has come out during surgery you?
use a duplicate
A patient with the temperature of 30 debrees C will have
increased latencies
Which would not be considered contamination of the sterile field
reaching underneath the surgeon's gown to grab his pager
Personal Protection Devices (PPDs) consist of
gloves, masks, gowns
When an electrode fall on the floor you
you immediately pick it up to dispose of it in a sharps container
when testing BAEP's you get a wave I on your contralateral ear montage. What do you
do?
Check ear phones for porper side stimulation
When no phase reversal is present in an anterior-posterior cortical grid recording
The maximum amplitude response is closest to the central sulcus
The Artery of Admkiewicz is
a major feeder vessel to the spinal cord
Which of the following is a barbiturate?
