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CNIM INTERPRETATION QUESTIONS AND ANSWERS
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CNIM INTERPRETATION QUESTIONS AND ANSWERS
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CNIM INTERPRETATION QUESTIONS AND ANSWERSWhat is the minimum bandpass filter for an evoked potential system?
A- 0-100 Hz
B- 100-3000 Hz
C- 1000-10000Hz
D- 0.1-5000 Hz
D- 0.1-5000 Hz
What has the most effect on epidural recordings?
Changing stimulation rate
Changing LFF
Changing anesthesia
Spinal instrumentation
Changing LFF
What is an advantage of synchronous stimulation?
Detection of unilateral spinal cord changes
Maximal responses
Reduced ambient noise
Reduced stimulus artifact
Maximal responses
Dermatome
Dorsal root
Ventral root
Dorsal ramus
Ventral ramus
Dorsal root
Inside a hospital grade power cord the "neutral" wire is?
Black
White
Green
Grey
white
,Which of the following would be most likely to predict neurologic deficit following
scoliosis surgery?
Absence of cortical response in the presence of a good cervical response
Decrease in amplitude of the potentials following decrease in blood pressure
Increase in latency of the potentials after the cord has been flushed with ice water
Absence of the cortical response in the presence of a good popliteal fossa response
Absence of the cortical response in the presence of a good popliteal fossa response
What should be monitored for an aneurysm in the posterior fossa?
EEG and MN SSEPs
ABR and MN SSEPs
VEP and EEG
PTN and MN SSEPs
ABR and MN SSEPs
For which of the following modalities would you need multiple timebases?
Median and ulnar SSEP
Posterior tibial and lower extremity dermatomal SSEPs
Median SSEP and BAEPs
Trigeminal and facial EMG
Median SSEP and BAEPs
Cortical responses to left median nerve stimulation are best recorded at:
Fpz
CPz
CP4
CP3
CP4
What is required for documentation on reports?
Normative
Physiologic
Pharmacologic
Insurance
Pharmacologic
During what type of surgery would you most likely need to set multiple EP baselines?
Auditory canal
Posterior spine procedure
,Carpal tunnel
Posterior fossa surgery
Posterior fossa surgery
What is the definition of macroshock?
50 uA or less shock
100 uA or less shock
Perceivable shock that could cause lethal fibrillation
Unperceivable shock that could cause lethal fibrillation if applied to the heart
Perceivable shock that could cause lethal fibrillation
Fentanyl has what type of effect on responses?
Increased latencies
Decreased amplitudes
Increased amplitudes
Decreased latencies
Increased latencies
What is EEG used for?
Internal carotid identification
Vertebral artery identification
Spinal cord
Brainstem
Internal carotid identification
What is the main source of noise during recording of BAERs?
High frequency myogenic twitches
60 Hz
Background EEG artifact
Stereo equipment
High frequency myogenic twitches
What cranial foramen do the 3 branches of the trigeminal nerve exit through?
>Optic canal, foramen lacerum, foramen rotundum
>superior orbital fissure, foramen rotundum, and foramen ovale
>Foramen ovale, porous acousticus, jugular foramen
>Meckle's cave, hypophyseal fossa, hypoglossal canal
superior orbital fissure, foramen rotundum, and foramen ovale
Which of the following arteries supplies the anterior spinal artery?
Basilar artery
Iliac artery
, Artery of Adamkiewicz
Anterior inferior cerebellar artery
Artery of Adamkiewicz
What region does the Artery of Adamkiewicz generally originate?
Around T10-L1 region
Around the L4-L5 region
Around the T1-T5 region
Around the C5-C6 region
Around T10-L1 region
Where do you record recurrent laryneal EMG?
Soft palate
Vocalis
Cricothyroid
Tongue
Vocalis
Intraoperative BAERs monitors function from the cochlea to?
Auditory cortex
Lateral geniculate bodies
Medial lemniscus
Lower midbrain
Lower midbrain
What should be included in the IOM record?
Normative data
Core temperature
Oral temperature
Hair color
Core temperature
Uncoordinated movements are consistent with:
Ataxia
Apraxia
Dysphasia
Dyslexia
ataxia
What constitutes a ground loop?
When your power cord forms a loop
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