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CNIM EXAM 2 QUESTIONS AND ANSWERS
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CNIM EXAM 2 QUESTIONS AND ANSWERS
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CNIM EXAM 2 QUESTIONS AND ANSWERSWhich of the following are most likely to cause airborne contamination in an operating
room?
A- ventilation devices
B- Kerrison particles
C- dust particles
D- bloodborne pathogens - Answers -C- dust particles
Stimulus artifact during SSEPs can be decreased by
A- keeping the instrument away from florescent lights and video monitors
B- separating stimulating cables from cables of other equipment
C- lowering the impedances of ground and stimulating electrodes
D- using enough muscle relaxant - Answers -C- lowering the impedances of ground and
stimulating electrodes
All of the following are true of "informed consent" for an operative procedure except
A- one of the purposes of the consent is to protect the surgeon and hospital from
unauthorized operative procedures
B- the patient may have sedation before the consent is signed
C- the surgeon must be informed if the consent has not been signed before surgery
starts
D- if illiterate, the patient signs with an "X", after which the witness writes "patient's
mark" - Answers -B- the patient may have sedation before the consent is signed
If you have high frequency noise in a BAEP:
A- Change LFF to 30 Hz
B- Change LFF to 150 Hz
C- Change HFF from 3000 to 1500 Hz
D- Change HFF to 200 Hz - Answers -C- Change HFF from 3000 to 1500 Hz
Electromagnetic inductance
A- should never occur in the operating room
B- results only from wires that are not insulated
C- results only from poor ground wires
D- is produced when a wire carrying current induces a magnetic field that in turn creates
current in other wires - Answers -D- is produced when a wire carrying current induces a
magnetic field that in turn creates current in other wires
The area of greatest risk for ischemic injury during carotid endarterectomy is
,A- the middle cerebral artery
B- the posterior cerebral artery
C- the anterior communicating artery
D- the posterior cerebral artery - Answers -A- the middle cerebral artery
When recording a posterior tibial nerve SSEP, the Fpz ‐ C5s channel records
A- subcortical near‐field potentials
B- stationary lumbar potentials
C- the Erb's point potential
D- subcortical far ‐ field potentials - Answers -D- subcortical far ‐ field potentials
Needle electrodes should be discarded and not resterilized if
A- the patient has Hodgkin's disease
B- the patient has Jakob ‐ Creutzfeldt disease
C- the patient has Meniere's disease
D- the patient has Korsakoff's psychosis - Answers -B- the patient has Jakob ‐
Creutzfeldt disease
Decreased synchronization of the auditory nerve firing will likely result in
A- a decrease in wave amplitude
B- no change in wave amplitude or latency
C- a decrease in wave latency
D- an increase in wave amplitude - Answers -A- a decrease in wave amplitude
Universal Precautions
A- Strategy for preventing disease protection
B- Handwashing after every meal
C- The assumption that every patient has AIDS
D- Use of PPDs with every patient - Answers -D- Use of PPDs with every patient
Upper extremity SEPs are transmitted through the:
A- the lateral lemniscus
B- gracilis nucleus
C- the medial geniculate bodies
D- cuneate nucleus - Answers -D- cuneate nucleus
Which describes a semi‐critical infectious device?
A- Requires low level disinfection after each
B- Requires high to intermediate disinfection after each use
C- Requires no disinfection after each use use
, D- Requires sterilization after each use - Answers -B- Requires high to intermediate
disinfection after each use
Low frequency sounds are
A- at the apex of the cochlea
B- near the stapes
C- perceived along Reissner's membrane
D- near the round window - Answers -A- at the apex of the cochlea
When monitoring with SSEPs, dural or direct cord recordings are advantageous
because:
A- they have less chance of artifact during cauterization
B- the waveforms are higher in amplitude and require fewer averages
C- the waveforms better reflect cortical responses to stimulation
D- they present less discomfort to the patient than scalp leads - Answers -B- the
waveforms are higher in amplitude and require fewer averages
Language
A- is in the right cerebral hemisphere in 85% of the population
B- is in the left cerebral hemisphere in 85% of the population
C- is localized in the parietal lobe
D- localization depends on the age of the patient - Answers -B- is in the left cerebral
hemisphere in 85% of the population
Dwell time can be defined as
A- the D to A conversion
B- the intersample interval
C- the sample rate of the signal's amplitude
D- the A to D conversion - Answers -B- the intersample interval
The BIS monitor
A- is used by anesthesia to determine the effect of TCMEP monitoring on the patient's
EEG
B- uses the phase coupling between frequencies in the EEG signal to establish depth of
anesthesia
C- squares the EEG power to produce a positive amplitude in the compressed spectral
array
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