CNIM TEST EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE
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CNIM TEST EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE
CNIM TEST EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE
CNIM TEST EXAM QUESTIONS AND CORRECT ANSWERS LATEST UPDATE
Which modality is most useful in monitoring the integrity of the corticospinal tracts during resection of
an intramedullary spinal cord tumor? - CORRECT D-Waves
The stimulus used in a brainstem auditory evoked potential study is a click with a peak acoustic power in
the range of - CORRECT 2000 to 4000Hz
Which of the following tibial nerve responses is not a near field response? - CORRECT N31
How many amperes of current will flow in a circuit containing a 2V battery and 10 ohms of resistance? -
CORRECT 0.2 amps
In BAEP's blood, betadine or irrigation fluid in tubing causes: - CORRECT Increase in absolute latency,
normal inter-peak latencies
In averaging, the period of analysis is called or . - CORRECT Epoch, sweep length
While monitoring BAEP, there was a prolongation of wave I through V by more than 2 msec. Which of the
following choices is NOT a possible cause? - CORRECT Increase of isoflurane anesthesia
Involuntary movement - CORRECT Ataxia
Smaller surface of stimulating electrodes: - CORRECT Higher Current Density
During posterior fossa surgery, when BAEPs are used for monitoring brainstem function, it is most
important to: - CORRECT Stimulate and record from the contralateral side
,P100 of a VEP will have the highest amplitude in which derivation? - CORRECT MO-Fz
Cranial nerve VII must be monitored concurrently with BAERs. - CORRECT True
Nerves of the body, such as median, ulnar, and femoral are formed from the: - CORRECT Dorsal and
ventral rami
Upper motor neuron extends from: - CORRECT Precentral gyrus to ventral horn
Increasing the stimulus rate of BAEPs - CORRECT Decreases amplitude and increases latency
Which of the following is the normal interocular latency difference of P100? - CORRECT Less than 15 msec
An amplifier sensitivity setting that produces a vertical deflection of 1cm with an input of 10mV is: -
CORRECT 1mV/mm
When identifying wave IV and V of a BAEP, which of the following would be most helpful? - ANSWER:
✔✔Cz-Contra ear montage
The maximum leakage current should be - CORRECT 100 uA
Wave V is usually the most prominent peak after - CORRECT 5.5 msec
Which of the following montages will best demonstrate waves I through V of the BAEP? - ANSWER:
✔✔Cz-ipsilateral ear
P13 Generator - CORRECT Spinomedullary junction
An electrode recording from Erb's point is placed - CORRECT 2-3 cm above the clavicle
, In BAEP's, perforated or hardened tympanic membrane causes: - CORRECT Increase in absolute latency,
normal inter-peak latencies
Which of the following temperatures should be annotated as being hypothermic? - CORRECT 34 degrees C
Dyskinesia: - CORRECT Abnormal Movement
Sensory supply of the posterior 1/3rd of the tongue is from which nerve? - ANSWER:
✔✔Glossopharyngeal
What is the best montage for distinguishing a IV/V complex? - CORRECT Cz-Contra Ear
Loss of a unilateral waveform is never a concern as long as wave V is present on the other ear. - ANSWER:
✔✔False
Which of the following are thalamic nuclei for the somatosensory pathway? - CORRECT VPL nucleus
What does an increased N13-N20 central conduction time with normal N9-N20 conduction time and a
normal nerve conduction velocity indicate? - CORRECT Defect above the lower medulla at or below the
somatosensory cortex
The effect of hypotension on the evoked potential is: - CORRECT Decreased amplitude, increased latency
Using an amplification factor of 500,000, a 1uV brainstem auditory evoked potential waveform will be
amplified to - CORRECT 0.50v
Which of the following monitoring modes is LEAST useful for skull base surgery? - CORRECT Tibial nerve
SSEP
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