2024 CNIM Review Latest Questions With Complete Grade A Answers
- Which of the following is a clinical indication of a lower motor neuron lesion?
Answer: Fasciculation
2. 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 laten- cy cortical and
subcortical ulnar and tibial nerve SSEPs are noted an hour following exposure. This change could be indicative of
Answer: Head/neck positioning
6. Stimulus artifact during SSEPs can be decreased by:
Answer: Lowering the impedances of ground and stimulating electrodes
7. 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
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13. 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
19. 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 ana-
log-to-digital conversion process?Answer: The maximal peak-to-peak signal amplitude should match the converter range
- If the posterior tibial nerve potential is unable to be elicited from stimulation at the
medial malleous which other location can be utilized?
Answer: Popliteal fossa
- How do you differentiate Wave I from cochlear microphonics in Ecoch?
Answer: -Reverse the polarity
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