CNIM PRACTICE QUESTIONS AND ANSWERS WELL ILLUSTRATED.
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Course
CNIM
Institution
CNIM
CNIM PRACTICE QUESTIONS AND ANSWERS WELL ILLUSTRATED.
ANASTAMOSIS? - correct answer. -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 t...
CNIM PRACTICE QUESTIONS AND
ANSWERS WELL ILLUSTRATED.
ANASTAMOSIS? - correct answer. -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 - correct answer. c. skin shed
Nerve that innervates 4th and 5th fingers? - correct answer. Ulnar Nerve
Problem with Bilateral Synchronus Stim? - correct answer. Can mask unilateral
problems
No N20 at baseline could mean? - correct answer. Stroke
What should you check 1st if you lose all waves? - correct answer. Stimulator
Which of the following devices measures electrode resistance?
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 - correct answer. 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 - correct
answer. 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. On the dura
2. In the spinal cord
3. Within the dural membrane
4. Between the dura and the spinal cord - correct answer. 1. on the dura
With referential recording, maximal amplitude cortical evoked potentials following
stimulation of the left posterior tibial nerve usually would be found between?
1. C3 and CZ
2. C4 and P4
3. FZ and CZ
4. C4 and CZ - correct answer. 1. C3 and CZ
For preoperative posterior tibial somatosensory evoked potentials, which of the
following would be the best ipsilateral location for the ground electrode?
1. it is the most durable metal
2. it is the lowest impedance metal
3. the chance of allergic reaction is eliminated
4. other metals may become toxic when currents are applied - correct answer. 4. other
metals may become toxic when currents are applied
During a median nerve preoperative study, a patient has discomfort at the wrist.
Stimulation electrodes are 10mm gold disk, stimulus intensity is 20 mA, and stimulus
duration is 100 usec. Which of the following would most likely reduce the patient's
discomfort while maintaining adequate stimulation?
1. Increase stimulus duration
2. Decrease number of repetitions
3. Use smaller stimulating electrodes
4. Decrease stimulus intensity below motor threshold - correct answer. 2. Decrease
number of repititions
Which of the following would enhance Wave I of the BAEP?
1. Increase the rate
2. Increase the intensity
3. Decrease the analysis time
4. Decrease the number of repetitions - correct answer. 2. Increase the intensity
In BAEPs wave I can most easily be differentiated from cochlear microphonics based
upon?
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