CNIM SSEP EXAM QUESTIONS AND ANSWERS ALL CORRECT LATEST 2024/2025 UPDATE
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Course
CNIM SSEP
Institution
CNIM SSEP
CNIM SSEP EXAM QUESTIONS AND ANSWERS ALL CORRECT LATEST 2024/2025 UPDATE
What is the time between P14 and N20 for MN SSEPs? - Answer- Central conduction time
What will best record the P37 peak following left PTN stimulation... - Answer- CP3
Which component would be most affected by a tumo...
CNIM SSEP EXAM QUESTIONS AND
ANSWERS ALL CORRECT LATEST
2024/2025 UPDATE
What is the time between P14 and N20 for MN SSEPs? - Answer- Central conduction
time
What will best record the P37 peak following left PTN stimulation... - Answer- CP3
Which component would be most affected by a tumor by where the spinal cord and
medulla intersect? - Answer- N13
What will most likely affect SSEPs? - Answer- Spinal cord tumor
If you cannot evaluate motor twitch, you... - Answer- Increase intensity until the
peripheral response no longer increases.
Which electrode site is the best for recording the cortical response to PTN stimulation? -
Answer- CPz
Upper extremity SSEPs would be monitored in lumbar patients to evaluate... - Answer-
Positioning and anesthesia effects
N34 - Answer- Far-field potential
What component is most likely to be increased in amplitude by synchronous bilateral
stimulation of tibial nerves... - Answer- P37
In SSEP monitoring during spinal cord surgery, an epidural electrode placed caudal to
the surgical site is used to... - Answer- Verify adequate sitmulation
Where should one place the ground plate when stimulating the peroneal nerve at the
knee? - Answer- Thigh
Which EP is a combo of near and far field? - Answer- SSEP
Horizontal Dipole - Answer- P14
, What montage would be best to monitor N13? - Answer- Cs5-EPc
What is the max recommended stim duration for lower SSEPs? - Answer- 300 uS
P13 - Answer- Post-synaptic cervical cord
Where would you record P37 - Answer- Cpz
Using a recording montage Fpz to non-cephalic reference, what is the best description
of N14? - Answer- Far-field potential
What is the advantage of synchronous stimulation> - Answer- Maximal responses
If you lose EP in MN SSEP, what is the first thing you should check? - Answer- Integrity
of stimulation and recording electrodes
If while monitoring a thoracolumbar procedure, over the past three hours there is a
steady decrease in bilateral P37 with stable P31, what should you do? - Answer-
Continue to monitor P31
If you are unable to acquire a motor twitch, what is the preferred method of assuring
maximal stimulation? - Answer- Increase stimulation until Erb's point potential is
maximal
What is most likely to cause a false negative for a thoracolumbar fusion? - Answer-
Bilateral synchronous stimulation of PTN
If your cortical SSEP is small in amplitude, what is the preferred method to increase the
response? - Answer- Increase intensity
What has the most effect on epidural recordings? - Answer- Spinal instrumentation
What is the purpose of an SSEP epidural electrode placed caudal to the surgical site? -
Answer- Verify the adequacy of stimulation
When recording SSEPs in a cold OR, you would expect to see what changes due to
temperature? - Answer- Increased peripheral latency with no change in CCT
What is the purpose of pre-operative SSEP data? - Answer- To determine abnormalities
During a C5-6 ACDF what are optimal SSEP stimulation sites? - Answer- UN and PTN
What is an optimal stimulation rate for lower SSEPs? - Answer- 3.7 Hz
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