CNIM PRACTICE EXAM WITH CORRECT
ACTUAL QUESTIONS AND CORRECTLY
WELL DEFINED ANSWERS LATEST 2024 –
2025 ALREADY GRADED A+
What artery primarily perfuses the lower spinal cord?
a. vena cava
b. adamkiewicz
c. middle cerebral artery
d. carotid - ANSWERS-b. adamkiewicz
To record cortical SSEPs during intraoperative monitoring of cervical spinal cord
surgery, electrodes should be placed:
a. 2 cm posterior to C3 and C4
b. in the C3 and C4 positions of the International 10/20 system
c. 2 cm anterior to c3 and c4
,d. between cz and pz and between pz and oz - ANSWERS-a. 2 cm posterior to C3
and C4
Which of the following is a reason why a "false-negative" could occur?
a. the lesion occurs in a structure not involved in the pathway being monitored
b. the documentation was incomplete
c. no significant changes were noted and communicated
d. the surgical procedure was revised due to data changes - ANSWERS-a. the
lesion occurs in a structure not involved in the pathway being monitored
The sterile table with instruments/or implants is considered sterile in which
areas?
a. 6 inches to the left and right of the sterile table
b. on the surface and 1 foot below
c. surface level and 2 feet in all directions
d. on the surface of the table, at or above the table, but not below the table -
ANSWERS-d. on the surface of the table, at or above the table, but not below the
table
Problem with Bilateral Synchronus Stim? - ANSWERS-Can mask unilateral
problems
No N20 at baseline could mean? - ANSWERS-Stroke
,What should you check 1st if you lose all waves? - ANSWERS-Stimulator
Which of the following devices measures electrode resistance?
1. Ammeter
2. Ohmmeter
3. Voltmeter
4. Photometer - ANSWERS-2. Ohmmeter
ANASTAMOSIS? - ANSWERS--CONNECTION or opening BETWEEN two things
(especially cavities or passages) that are normally diverging or branching, such as
between blood vessels.
-COMMUNICATION BETWEEN ARTERIES
What causes the most airborne bacteria in OR?
a. blood on gown
b. blood spill
c. skin shed
d. patient vent - ANSWERS-c. skin shed
, Nerve that innervates 4th and 5th fingers? - ANSWERS-Ulnar Nerve
If an evoked potential has a voltage of 10uV and the associated noise has a
voltage of 50uV, what is the signal to noise ratio after 100 averaged responses?
1. 1:1
2. 1:2
3. 2:1
4. 5:1 - ANSWERS-3. 2:1
To display median nerve SSEP response as an upward deflection, which of the
following must be known?
1. Waveform polarity and latency of the response
2. Waveform polarity and polarity convention of the amplifier inputs
3. Polarity convention of amplifier inputs and amplitude of the response
4. Latency of the response and polarity convention of the amplifier inputs -
ANSWERS-2. Waveform polarity and polarity convention of the amplifier inputs
If an amplifier is rated as having 120 dB common mode rejection rate, which of
the following ratios of in-phase to out-of-phase signals would be expected?
1. 10,000:1
2. 100,000:1
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