CNIM PRACTICE: Questions And Answers 2023
Graded (A+)
Quiz :ANASTAMOSIS? - √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
Quiz :What causes the most airborne bacteria in OR?
a. blood on gown
b. blood spill
c. skin shed
d. patient vent - √Answer :c. skin shed
Quiz :Nerve that innervates 4th and 5th fingers? - √Answer :Ulnar Nerve
Quiz :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 - √Answer :3. 2:1
Quiz :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 -
√Answer :2. Waveform polarity and polarity convention of the amplifier inputs
Quiz :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 - √Answer :1. on the dura
Quiz :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 - √Answer :1. C3 and CZ
, Quiz :For preoperative posterior tibial somatosensory evoked potentials,
which of the following would be the best ipsilateral location for the ground
electrode?
Quiz :To record the afferent volley after posterior tibial nerve stimulation, an
electrode should be placed on the?
1. Mastoid
2. Erbs point
3. T5 spine
4. Index Finger - √Answer :3. T5 spine
Quiz :Impedances of applied electrodes should be?
1. balanced and below 5,000 ohms
2. balanced and above 5,000 ohms
3. unbalanced and below 5,000 ohms
4. unbalanced and above 5,000 ohms - √Answer :1. balanced and below 5,000
ohms
Quiz :An increase in stimulation intensity cause a linear increase of which of
the following SSEP components?
1. N20
2. N45
3. P31
4. P37 - √Answer :3. P31
Quiz :Epidural electrodes are made of platinum because?
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 - √Answer :4.
other metals may become toxic when currents are applied
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