CNIM Exam 3| 246 Questions| With Complete Solutions

If the VIIIth nerve were transected, you would get A- No change B- Increased I-III latency C- Loss of wave III - V D- Absence of all waves I-V correct answer: D- Absence of all waves I-V Epidural electrodes should be placed: A- Inside the spinal cord B- Between the dura and the spinal cord C- Above the dura D- Above the lamina correct answer: C- Above the dura Early changes to CMAPs, during the exposure of CN VII, are most likely due to: A- an increase in inhalation agents B- severe blood loss C- heating from the electrical cautery device D- changes in the patient's state of consciousness correct answer: C- heating from the electrical cautery device During posterior fossa exploration for tic douloureaux, the monitoring of median nerve SSEPs will demonstrate the: A- location of the trigeminal nerve B- effect of retractor placement on the cochlear and vestibular nerves C- integrity of the somatosensory system traversing brainstem structures D- integrity of the brainstem correct answer: C- integrity of the somatosensory system traversing brainstem structures The effect of severe hypotension on the evoked potential includes A- a decrease in amplitude and variable changes in latency B- variable changes in amplitude and an increase in latency C- an increase in amplitude and a decrease in latency D- a decrease in amplitude and an increase in latency correct answer: D- a decrease in amplitude and an increase in latency Aliasing is the result of: A- Low input impedance B- Sampling above the Nyquist frequency C- Sampling below the Nyquist frequency D- High recording electrode impedance correct answer: C- Sampling below the Nyquist frequency Lhermitte's Sign