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Cnim - Electrode Concepts Questions And Answers With Verified Solutions (GRADED A+)
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Cnim - Electrode Concepts Questions And Answers With Verified Solutions (GRADED A+)
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Cnim - Electrode Concepts QuestionsAnd Answers With Verified Solutions
(GRADED A+)
When placing stimulating electrodes over a peripheral nerve to stimulate a
muscle response: - ANSWER✔✔ The negative electrode should be toward the
peripheral portion of the nerve to be stimulated.
When using monopolar stimulation for direct nerve stimulation... - ANSWER✔✔
The cathode electrode is connected to the negative terminal of the stimulator
output.
In monopolar facial nerve stim, positive charge flows... - ANSWER✔✔ From anode
to cathode.
Ground electrodes for SSEP recordings... - ANSWER✔✔ Are best placed between
stimulation and recording electrodes.
To minimize pain from stimulation during the recording of SSEPs, the contact
impedance of the stimulator should be... - ANSWER✔✔ Less than 5,000 Ohms
Due to a smaller surface area, subdermal needle electrodes will have an
impedance that is... - ANSWER✔✔ Higher than surface electrodes.
Epideral recordings are most affected by... - ANSWER✔✔ Spinal Instrumentation
, The most important consideration for mapping of near field high voltage gradient
signals is... - ANSWER✔✔ Closely spaced electrodes
Bipolar electrodes are used for localization of... - ANSWER✔✔ Signals via phase
reversal
Epidural electrodes should be placed... - ANSWER✔✔ Above the dura
For spinal cord monitoring using SSEPs, epidural electrodes should be placed... -
ANSWER✔✔ Rostral to surgical site.
Loosely applied electrodes would cause... - ANSWER✔✔ Increased noise in your
recording
Using dissimilar metals within an electrode montage will result in... - ANSWER✔✔
Electrode polarization
Electrode gel in between anode and cathode of the stimulating electrodes results
in... - ANSWER✔✔ Salt bridge
For good recordings, you must have... - ANSWER✔✔ High input impedence, low
electrode impedence
Needle electrodes should be sterilized with... - ANSWER✔✔ Steam
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