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CNIM Review questions with answers

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CNIM Review questions with answers

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  • June 23, 2024
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  • 2023/2024
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CNIM Review questions with answers

Which of the following is a clinical indication of a lower motor neuron lesion? - ANSWER:
✔✔Fasciculation



A stroke associated with a carotid endarterectomy will most likely occur: - ANSWER: ✔✔After cross-
clamping



Troubleshooting in the operating room is facilitated by - ANSWER: ✔✔viewing the raw signal input.



Which TcMEP wave is MOST affected by a bolus of 30 mg rocuronium? - ANSWER: ✔✔I-Wave



During a posterior cervical fusion for spinal stenosis, a global shift in latency cortical and subcortical
ulnar and tibial nerve SSEPs are noted an hour following exposure. This change could be indicative of -
ANSWER: ✔✔Head/neck positioning



Stimulus artifact during SSEPs can be decreased by: - ANSWER: ✔✔Lowering the impedances of ground
and stimulating electrodes



An analysis time of 5 msec is appropriate for monitoring: - ANSWER: ✔✔ECochG



What is the required vertical resolution of an evoked potential system? - ANSWER: ✔✔16 bits



If an amplifier has a common mode rejection ratio of 100:1, what is the corresponding dB? - ANSWER:
✔✔40



The surgical site for a posterior fossa tumor surgery requires adjustment of the standard SSEP recording
electrodes. Which adjustments should be made? - ANSWER: ✔✔Move C5S lateral

, A positive event occurring in the lead connected to the negative terminal, will result in a deflection -
ANSWER: ✔✔Downward



What would be the intraoperative use of DSEP? - ANSWER: ✔✔Prevent nerve root injuries during the
spinal cord manipulation



The anterior spinothalamic tract carries the sensory modalities of: - ANSWER: ✔✔Crude touch



Which of the following opposes any change in current? - ANSWER: ✔✔Inductance



D-Wave - ANSWER: ✔✔Spinal epidural recording



Monitoring the posterior tibial nerve SSEPs is most appropriate in cerebrovascular procedures involving
which of the following arteries? - ANSWER: ✔✔Anterior cerebral



What abnormality can a defect in lower motor neurons cause? - ANSWER: ✔✔Flaccid Paralysis



Which modalities should you monitor for a C7 fracture? - ANSWER: ✔✔Ulnar nerve and PTN



I-Waves and muscle artifact appear at a latency: - ANSWER: ✔✔Later than the D-Wave



Which of the following anesthetic agents will NOT obliterate the transcranial electric motor evoked
potential? - ANSWER: ✔✔Fentanyl



How do benzodiazepines affect cortical SEP waves? - ANSWER: ✔✔decrease amplitude



MRI conditional electrodes are made from which of the following? - ANSWER: ✔✔Nickel titanium



Which of the following would result in the best resolution in the analog-to-digital conversion process? -
ANSWER: ✔✔The maximal peak-to-peak signal amplitude should match the converter range

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