CNIM EXAM Questions With Verified
Answers.
Facial nerve EMG responses are best recorded from - answerorbicularis oris and orbicularis
oculi muscles
What intravenous drug is used to maintain hypotension? - answerNutroprusside
At the stage of surgical anesthesia, propofol affects the BAEP by - a...
Facial nerve EMG responses are best recorded from - answer✔orbicularis oris and orbicularis
oculi muscles
What intravenous drug is used to maintain hypotension? - answer✔Nutroprusside
At the stage of surgical anesthesia, propofol affects the BAEP by - answer✔increasing the
latencies of waves I, III, and V without changing their amplitudes
If you have a signal to noise ratio of 1:2, averaging 64 responses will: - answer✔improve the
ratio to 4:1
The central conduction time for MN SSEP is: - answer✔P14 - N20
Spinal cord ischemia during aortic surgery is best detected by changes in the - answer✔posterior
tibial nerve somatosensory evoked potential
At the end of an acoustic neuroma surgery, you would test the facial nerve by stimulating: -
answer✔Proximal to the site of the tumor
In the operating room, the stimulus intensity for activating a sensory nerve: - answer✔does not
have an established boundary
The effects of pharmacological or surgical manipulations can be mimicked by the inappropriate
manipulation of: - answer✔filter settings
Eliciting a motor twitch with PTN stimulation, you expect to see: - answer✔Plantar flexion of
the toes
What would be the effect of fluid in the external auditory canal? - answer✔Increase of absolute
latencies
Early changes to CMAPs, during the exposure of CN VII, are most likely due to -
answer✔heating from the electrical cautery device
During microvascular decompression surgery to relieve a hemifacial spasm - answer✔a
stimulation of CN VII elicits a response from the mentalis muscle
Of the following, the peak equivalent SPL of a click should be calibrated at: - answer✔1000 Hz
An unstable blood pressure during SSEP monitoring in the OR affects cortical EPs resulting in -
answer✔fluctuating amplitudes
Multiple sclerosis, spinal cord injury, and brain trauma can lead to debilitating spasticity that has
been relieved in some patients following: - answer✔selective dorsal rhizotomy
If a 10 microvolt signal inside 50 microvolts of noise is averaged for 100 traces, the final signal
to noise ratio will be: - answer✔2:1
A patient in a state of surgical anesthesia using nitrous oxide is likely to have a drop in SSEP
amplitudes of - answer✔0.75
What is the minimum bandpass filter for an evoked potential system? - answer✔0.1-5000 Hz
A patient is admitted to the operating room diagnosed with a burst fracture of the first lumbar
vertebra. The most appropriate nerve(s) to monitor would be the: - answer✔posterior tibial and
ulnar nerves
If a sound intensity is decreased from 80 dB to 60 dB then the sound pressure has been decreased
by a factor of: - answer✔10
The term "broadband click" refers to a - answer✔peak acoustic power of 2 - 4 kHz
What is a rhizotomy? - answer✔A procedure to selectively destroy problematic nerve roots
If you receive a shock from the system console, the first thing you should do is: -
answer✔Disconnect the patient
What is the best montage to use to evaluate dorsal column activity? - answer✔Cs5-EPc
The earliest obligate component of the median nerve SSEP that is measured far-field is generated
in the: - answer✔Medial lemniscus
Preservation of facial nerve CMAPs - answer✔does not always indicate a good surgical outcome
The purpose of preoperative evoked potential testing is to: - answer✔Compare to post-induction
responses
The purpose of isolated amplifier inputs is to: - answer✔prevent a flow of stray currents through
connecting lines to the patient
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