CNIM END OF COURSE EXAM 2026 QUESTIONS AND
ANSWERS GRADED A+
✔✔What is the minimum required vertical resolution of an evoked potential system? -
✔✔8 bits
✔✔Which of the following is most affected by halogenated agents? - ✔✔Posterior tibial
cortical potential
✔✔A 10-bit A/D Converter has how many discrete voltage values in its range? -
✔✔1024
✔✔If you cannot replace an electrode that has come out during surgery you: - ✔✔Use a
duplicate
✔✔The C8 nerve root exits the spinal cord: - ✔✔Above the T1 vertebrae
✔✔When an electrode falls on the floor you: - ✔✔You immediately pick it up and
dispose of it in a sharps container
✔✔A 60 Hz artifact would most likely be caused by - ✔✔Infusion pump
✔✔Midazolam is what type of drug? - ✔✔Benzodiazepine
✔✔If you get artifact in you subcortical channel you: - ✔✔Use a spare CS5 electrode
✔✔Where is the ABR wave V generated? - ✔✔Midbrain
✔✔How should needle electrodes be discarded? - ✔✔Only is a red puncture-proof
sharps container
✔✔What is the most common reason for loss of BAEPs during retromastoid
microvascular decompression? - ✔✔Compromise vascular supply
✔✔The best anesthesia for SSEPs: - ✔✔Infusion fentanyl
✔✔Which component would be most affected by a tumor by the intersection of the
spinal cord and medulla? - ✔✔N13
✔✔Most strokes associated with carotid endarterectomy occur: - ✔✔After the cross-
clamping is released
, ✔✔If you cannot evaluate motor twitch you: - ✔✔Increase intensity until the peripheral
response no longer increases
✔✔Platinum electrodes are used to record epidural potentials because: - ✔✔Other
elements cause neurotoxicity when current is passed through them
✔✔Cortel-Dubousset instrumentation involves which of the following? - ✔✔Derotation
✔✔What is a benefit of using epidural electrodes? - ✔✔They are highly sensitive
✔✔Which muscle is innervated by L5 nerve root? - ✔✔Tibialis Anterior
✔✔Reversible loss of ABRs indicate - ✔✔Complete neurological recovery
✔✔Common Mode Rejection: - ✔✔Is the cancellation of signals that are common to
both inputs of the amplifier
✔✔You record a spinal potential to: - ✔✔Establish an AP
✔✔Personal Protection Devices (PPDs) consist of: - ✔✔gowns, gloves, mask
✔✔Opioids are used primarily for: - ✔✔Analgesia
✔✔n general, most anesthetic drugs have what effect on cortical responses? -
✔✔Decreased amplitude, increased latency
✔✔How frequently should the evoked potential machines be calibrated and safety
tested? - ✔✔Every 6 months
✔✔The watershed area lies between: - ✔✔Anterior cerebral artery & middle cerebral
artery
✔✔When can the BAEP no longer be successfully performed? After resection of: -
✔✔Acoustic nerve
✔✔What is an appropriate filter for a short latency SSEP cortical response? - ✔✔10-
3000 Hz
✔✔Which of the following statements is true? - ✔✔Later cortical peaks are affected
more than earlier peaks
✔✔What is the noise reduction technique that best reduces EKG artifact? - ✔✔Artifact
reject
ANSWERS GRADED A+
✔✔What is the minimum required vertical resolution of an evoked potential system? -
✔✔8 bits
✔✔Which of the following is most affected by halogenated agents? - ✔✔Posterior tibial
cortical potential
✔✔A 10-bit A/D Converter has how many discrete voltage values in its range? -
✔✔1024
✔✔If you cannot replace an electrode that has come out during surgery you: - ✔✔Use a
duplicate
✔✔The C8 nerve root exits the spinal cord: - ✔✔Above the T1 vertebrae
✔✔When an electrode falls on the floor you: - ✔✔You immediately pick it up and
dispose of it in a sharps container
✔✔A 60 Hz artifact would most likely be caused by - ✔✔Infusion pump
✔✔Midazolam is what type of drug? - ✔✔Benzodiazepine
✔✔If you get artifact in you subcortical channel you: - ✔✔Use a spare CS5 electrode
✔✔Where is the ABR wave V generated? - ✔✔Midbrain
✔✔How should needle electrodes be discarded? - ✔✔Only is a red puncture-proof
sharps container
✔✔What is the most common reason for loss of BAEPs during retromastoid
microvascular decompression? - ✔✔Compromise vascular supply
✔✔The best anesthesia for SSEPs: - ✔✔Infusion fentanyl
✔✔Which component would be most affected by a tumor by the intersection of the
spinal cord and medulla? - ✔✔N13
✔✔Most strokes associated with carotid endarterectomy occur: - ✔✔After the cross-
clamping is released
, ✔✔If you cannot evaluate motor twitch you: - ✔✔Increase intensity until the peripheral
response no longer increases
✔✔Platinum electrodes are used to record epidural potentials because: - ✔✔Other
elements cause neurotoxicity when current is passed through them
✔✔Cortel-Dubousset instrumentation involves which of the following? - ✔✔Derotation
✔✔What is a benefit of using epidural electrodes? - ✔✔They are highly sensitive
✔✔Which muscle is innervated by L5 nerve root? - ✔✔Tibialis Anterior
✔✔Reversible loss of ABRs indicate - ✔✔Complete neurological recovery
✔✔Common Mode Rejection: - ✔✔Is the cancellation of signals that are common to
both inputs of the amplifier
✔✔You record a spinal potential to: - ✔✔Establish an AP
✔✔Personal Protection Devices (PPDs) consist of: - ✔✔gowns, gloves, mask
✔✔Opioids are used primarily for: - ✔✔Analgesia
✔✔n general, most anesthetic drugs have what effect on cortical responses? -
✔✔Decreased amplitude, increased latency
✔✔How frequently should the evoked potential machines be calibrated and safety
tested? - ✔✔Every 6 months
✔✔The watershed area lies between: - ✔✔Anterior cerebral artery & middle cerebral
artery
✔✔When can the BAEP no longer be successfully performed? After resection of: -
✔✔Acoustic nerve
✔✔What is an appropriate filter for a short latency SSEP cortical response? - ✔✔10-
3000 Hz
✔✔Which of the following statements is true? - ✔✔Later cortical peaks are affected
more than earlier peaks
✔✔What is the noise reduction technique that best reduces EKG artifact? - ✔✔Artifact
reject
