CNIM Difficult 2 Exam Questions & Answers
| CNIM Practice Test 2026/2027
Of the choices below, the most appropriate BAEP interstimulus interval is:
A) 10-20 mS
B) 33-90 mS
C) 0.02 mS
D) 1-5 mS
B) 33-90 mS
You would expect a loss of BAEps in whcih surgery?
A) Temporal resection
B) Foramen magnum decompression
C) Pontine glioma
D) Parotidectomy
C) Pontine glioma
The appropriate analysis time for BAEP's is:
A) 15 mS
B) 20 mS
C) 50 mS
D) 100 mS
A) 15 mS
What is the most appropriate first step in trouble shooting responses from a cortical grid
that shows nothing but artifact in the recording?
A) Reboot the machine
B) Make sure the grid is in good contact with the brain and is correct side down
C) Get a new electrode. They are often of poor quality.
D) Make sure the stimulators are connected properly
Make sure the grid is in good contact with the brain and is correct side down
After-discharges occur after what?
A) Seizure
B) Transcranial motor stimulation
C) Direct cortical stimulation
D) Phase reversal
C) Direct cortical stimulation
Lack of after-discharges indicates:
A) Stimulation is not over a functional motor or language area
B) The stimulus is adequate to activate motor or language areas
, C) The stimulus is inadequate to activate motor or language areas
D) The stimulus is likely below the threshold of seizure activation
The stimulus is likely below the threshold of seizure activation
When no phase reversal is present in an anterior-posterior cortical grid recording:
A) The grid is over the Pre-Central
B) The maximum amplitude response is closest to the central sulcus
C) The grid is over the post-central gyrus
D) The grid should be turned 90 degrees in order to find the phase reversal
The maximum amplitude response is closest to the central sulcus
What drugs would you use for language mapping?
A) Sevoflurane
B) Pavulon
C) Thiopental
D) Fentanyl
D) Fentanyl
What is the advantage of using bipolar recording pairs for monitoring of cranial nerve s-
EMG
A) Avoids far-field recording of nearby muscle activity
B) Is more sensitive to irritation of cranial nerves
C) Maximizes amplitude of recorded EMG
D) Less affected by neuromuscular blockade
Avoids far-field recording of nearby muscle activity
What might be monitored for a jugular bulb tumor surgery?
A) Flash VEP
B) CN III-VI
C) CN VII-XII
D) BAEP only
C) CN VII-XII
Cranial Nerve IV can be monitored using electrodes inserted into the:
A) Lateral rectus
B) Inferior oblique
C) Superior oblique
D) Trochlea
Trochlea
(often synonymous with superior oblique)
What is the advantage to using an insulated bipolar electrode for intracranial facial
nerve stimulation?
A) Prevent burn to surgeon's hand
B) Prevent cranial nerve damage
| CNIM Practice Test 2026/2027
Of the choices below, the most appropriate BAEP interstimulus interval is:
A) 10-20 mS
B) 33-90 mS
C) 0.02 mS
D) 1-5 mS
B) 33-90 mS
You would expect a loss of BAEps in whcih surgery?
A) Temporal resection
B) Foramen magnum decompression
C) Pontine glioma
D) Parotidectomy
C) Pontine glioma
The appropriate analysis time for BAEP's is:
A) 15 mS
B) 20 mS
C) 50 mS
D) 100 mS
A) 15 mS
What is the most appropriate first step in trouble shooting responses from a cortical grid
that shows nothing but artifact in the recording?
A) Reboot the machine
B) Make sure the grid is in good contact with the brain and is correct side down
C) Get a new electrode. They are often of poor quality.
D) Make sure the stimulators are connected properly
Make sure the grid is in good contact with the brain and is correct side down
After-discharges occur after what?
A) Seizure
B) Transcranial motor stimulation
C) Direct cortical stimulation
D) Phase reversal
C) Direct cortical stimulation
Lack of after-discharges indicates:
A) Stimulation is not over a functional motor or language area
B) The stimulus is adequate to activate motor or language areas
, C) The stimulus is inadequate to activate motor or language areas
D) The stimulus is likely below the threshold of seizure activation
The stimulus is likely below the threshold of seizure activation
When no phase reversal is present in an anterior-posterior cortical grid recording:
A) The grid is over the Pre-Central
B) The maximum amplitude response is closest to the central sulcus
C) The grid is over the post-central gyrus
D) The grid should be turned 90 degrees in order to find the phase reversal
The maximum amplitude response is closest to the central sulcus
What drugs would you use for language mapping?
A) Sevoflurane
B) Pavulon
C) Thiopental
D) Fentanyl
D) Fentanyl
What is the advantage of using bipolar recording pairs for monitoring of cranial nerve s-
EMG
A) Avoids far-field recording of nearby muscle activity
B) Is more sensitive to irritation of cranial nerves
C) Maximizes amplitude of recorded EMG
D) Less affected by neuromuscular blockade
Avoids far-field recording of nearby muscle activity
What might be monitored for a jugular bulb tumor surgery?
A) Flash VEP
B) CN III-VI
C) CN VII-XII
D) BAEP only
C) CN VII-XII
Cranial Nerve IV can be monitored using electrodes inserted into the:
A) Lateral rectus
B) Inferior oblique
C) Superior oblique
D) Trochlea
Trochlea
(often synonymous with superior oblique)
What is the advantage to using an insulated bipolar electrode for intracranial facial
nerve stimulation?
A) Prevent burn to surgeon's hand
B) Prevent cranial nerve damage
