CNIM Exam A with all Correct & 100% Verified Answers |
Actual Complete Exam |Already Graded A+
Cochlear microphonics are used to monitor what? ✔Correct Answer-Hair cells
What is the effect on EEG from induction using isoflurane?
A. Decreased delta followed by increased alpha/beta
B. Increase in delta power and increase in alpha-beta power
C. Increase in low-voltage fast activity
D. Increased power at all frequencies ✔Correct Answer-Increase in delta power and increase
in alpha-beta power
What determines the latency of SSEPs most? ✔Correct Answer-limb length
Stimulus artifact during SSEPs can be decreased by:
A. Separating stimulating cables from cables of other equipment
B. Keeping the instrument away from florescent lights and video monitors
C. Using enough muscle relaxant
D. Lowering the impedances of ground and stimulating electrodes ✔Correct Answer-Lowering
the impedances of ground and stimulating electrodes
The P31 response to posterior tibial nerve stimulation:
A. is generated by the thalamus
B. Reflects post-synaptic activity in the cervical spinal cord
C. Is recordable over a generalized region of the scalp
D. Is best recorded by an electrode placed at Cs5 ✔Correct Answer-Is recorded over a
generalized region of the scalp
Using an extension cord in the operating room increases:
A. The potential for a ground leak
B. Amplifier input impedance
C. The amount of chassis leakage possible
D. Amplitude of responses ✔Correct Answer-The amount of chassis leakage possible
A leasing causing homonymous hemianopsia would most likely be located
A. at the optic chiasm
B. anterior to the chiasm
C. posterior to the chiasm
D. In the retina ✔Correct Answer-Posterior to the chiasm
The location of the electrode that will yield a left hand MEP at the lowest threshold will be:
A. C4 positive
, B. C4 negative
C. C3 negative ✔Correct Answer-C4 positive
What is the maximum recommended stimulation for lower SSEPS?
A. 500 uS
B. 400 uS
C. 300 uS
D. 1000 uS ✔Correct Answer-500 uS
What is the primary cortical receiving area for audition?
A. Middle temporal gyrus
B. Parahippocampal gyrus
C. INferior temporal gyrus
D. Heschl's gyrus ✔Correct Answer-Heschl's gyrus
If the VIIIth nerve were transected, you would get
A. Increased I-III latency
B. Loss of wave III-V
C. No change
D. Absence of all waves I-V ✔Correct Answer-Absence of all waves I-V
Due to smaller surface area, subdermal needle electrodes will have an impedance that is:
A. higher than surface electrodes
B. Improved by cleansing the skin with an abrasive gel
C. Increased with improper insertion
D. lower than disk electrodes ✔Correct Answer-Higher than surface electrodes
D waves represent: ✔Correct Answer-Descending corticospinal volley
What is the minimum acceptable sweep for ABRs? ✔Correct Answer-10 msec
Preoperative baseline, sensory evoked potential values are essential to IOM because
A. It is necessary to compare intraoperative values with laboratory normative data
B. Absolute boundaries for EPs obtained intraoperatively are not available
C. They help establish the appropriate level of anesthesia
D. Latencies and amplitudes are highly variable ✔Correct Answer-absolute boundaries for EPs
obtained intraoperatively are not available
When opening posterior fossa, what is the most likely cause for the attenuation of wave I ABRs?
A. resection of auditory nerve
B. Drilling cranium
C. Heat from drill
D. Retraction of cerebellum ✔Correct Answer-Drilling cranium
Actual Complete Exam |Already Graded A+
Cochlear microphonics are used to monitor what? ✔Correct Answer-Hair cells
What is the effect on EEG from induction using isoflurane?
A. Decreased delta followed by increased alpha/beta
B. Increase in delta power and increase in alpha-beta power
C. Increase in low-voltage fast activity
D. Increased power at all frequencies ✔Correct Answer-Increase in delta power and increase
in alpha-beta power
What determines the latency of SSEPs most? ✔Correct Answer-limb length
Stimulus artifact during SSEPs can be decreased by:
A. Separating stimulating cables from cables of other equipment
B. Keeping the instrument away from florescent lights and video monitors
C. Using enough muscle relaxant
D. Lowering the impedances of ground and stimulating electrodes ✔Correct Answer-Lowering
the impedances of ground and stimulating electrodes
The P31 response to posterior tibial nerve stimulation:
A. is generated by the thalamus
B. Reflects post-synaptic activity in the cervical spinal cord
C. Is recordable over a generalized region of the scalp
D. Is best recorded by an electrode placed at Cs5 ✔Correct Answer-Is recorded over a
generalized region of the scalp
Using an extension cord in the operating room increases:
A. The potential for a ground leak
B. Amplifier input impedance
C. The amount of chassis leakage possible
D. Amplitude of responses ✔Correct Answer-The amount of chassis leakage possible
A leasing causing homonymous hemianopsia would most likely be located
A. at the optic chiasm
B. anterior to the chiasm
C. posterior to the chiasm
D. In the retina ✔Correct Answer-Posterior to the chiasm
The location of the electrode that will yield a left hand MEP at the lowest threshold will be:
A. C4 positive
, B. C4 negative
C. C3 negative ✔Correct Answer-C4 positive
What is the maximum recommended stimulation for lower SSEPS?
A. 500 uS
B. 400 uS
C. 300 uS
D. 1000 uS ✔Correct Answer-500 uS
What is the primary cortical receiving area for audition?
A. Middle temporal gyrus
B. Parahippocampal gyrus
C. INferior temporal gyrus
D. Heschl's gyrus ✔Correct Answer-Heschl's gyrus
If the VIIIth nerve were transected, you would get
A. Increased I-III latency
B. Loss of wave III-V
C. No change
D. Absence of all waves I-V ✔Correct Answer-Absence of all waves I-V
Due to smaller surface area, subdermal needle electrodes will have an impedance that is:
A. higher than surface electrodes
B. Improved by cleansing the skin with an abrasive gel
C. Increased with improper insertion
D. lower than disk electrodes ✔Correct Answer-Higher than surface electrodes
D waves represent: ✔Correct Answer-Descending corticospinal volley
What is the minimum acceptable sweep for ABRs? ✔Correct Answer-10 msec
Preoperative baseline, sensory evoked potential values are essential to IOM because
A. It is necessary to compare intraoperative values with laboratory normative data
B. Absolute boundaries for EPs obtained intraoperatively are not available
C. They help establish the appropriate level of anesthesia
D. Latencies and amplitudes are highly variable ✔Correct Answer-absolute boundaries for EPs
obtained intraoperatively are not available
When opening posterior fossa, what is the most likely cause for the attenuation of wave I ABRs?
A. resection of auditory nerve
B. Drilling cranium
C. Heat from drill
D. Retraction of cerebellum ✔Correct Answer-Drilling cranium
