SSEPs and VEPs – CNIM Exam with all Correct & 100% Verified
Answers |Actual Complete Exam |Already Graded A+
1. Somatosenso
-Assesses somatosensory system functioning.
ry Evoked
-Usually uses bipolar trancutaneous electrical electrical stimulation of the
medial
Potentials (SSEPs) nerve (MN) or the posterior tibial nerve (PTN), then recording from the
scalp.
2. Non- -Motor/Sensory Threshold
Pathologic
-Adequacy of peripheral nerve response
Factors that
-Equalizing peripheral nerve response
Affect SSEPs
-Filter ettects
-Limb temperature and length
-Anesthetic
3. Motor/ -If threshold is too low, it may be diflcult to elicit a wave in absence of muscle
Sensory relaxant.
Threshold
-Measured for adequacy by measuring potential at Erb's Point and the
4. Adequacy of Popliteal Fossa.
Pe-ripheral -Nerves are considered saturated when waveform amplitude is unattected
Nerve by continuing increase of stimulation.
Response
5. Filter Effects -Phase lead (low frequency filter) and phase lag (high frequency filter)
ettects are present in SSEPs.
-Lower the number, later the latency.
-Notch filter should only be used in extreme cases of 60 Hz interference, as it
attects waveform latency and amplitude.
-BAEPs also attected.
6. Limb
Tempera-ture 7. Anesthetic Fac-tors
and Length
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16
, SSEPs and VEPs – CNIM Exam with all Correct & 100% Verified
Answers |Actual Complete Exam |Already Graded A+
-Waveform latency and
amplitude attected by
temperature.
-Increased latency with
increased limb length.
-Temperature attects
conduction velocity of
neuron.
-Attect SSEP recordings
and BAEP recordings.
-SSEPs more attected
because they are recorded
from sensory cortex and
not the brainstem.
Sensory cortex more
attected by anesthetics.
2/
16
, SSEPs and VEPs – CNIM Exam with all Correct & 100% Verified
Answers |Actual Complete Exam |Already Graded A+
-Inhalation anesthetics attect cortically generated waveforms by depressing
activity in the cortex.
8. Pathologic -May or may not be problems with the nerves themselves.
Fac-tors -Some factors include issues with circulation and edema in area of
stimulating electrodes.
-Friedreich's Ataxia
-Multiple Sclerosis (MS)
-Huntington's Chorea
9. Friedreich's -Heritable disorder
Atax-ia -Gait disturbance (ataxia), speech problems, and heart disease.
-Results from degeneration of sensory nerve tissue.
-Primarily attects spinal cord and peripheral nerves.
-Sclerosis and degeneration of dorsal root ganglion, spinocerebellar tracts,
lateral corticospinal tracts, and dorsal column.
-Hearing and vision can be attected.
-SSEPs become abnormal as symptoms progress.
10. Multiple
Sclerosis (MS) -Autoimmune disease in which immune system attaches the CNS,
leading to demyelination of axons.
-Increase SSEP absolute and interpeak latencies.
11. Huntingto
n's Chorea -Onset of uncoordinated, jerky body movements and decline in some
mental abilities.
-Attects cortical response amplitude and latency in SSEPs.
12. Peripheral
Neu-ropathy -Damage to the peripheral nerves from diseases, toxins, vitamin
deficiencies, and physical trauma.
-Can attect SSEPs.
13. Stimulator
Elec-trode -Median Nerve Stimulation
Placement -Ulnar Nerve Stimulation
3/
16
Answers |Actual Complete Exam |Already Graded A+
1. Somatosenso
-Assesses somatosensory system functioning.
ry Evoked
-Usually uses bipolar trancutaneous electrical electrical stimulation of the
medial
Potentials (SSEPs) nerve (MN) or the posterior tibial nerve (PTN), then recording from the
scalp.
2. Non- -Motor/Sensory Threshold
Pathologic
-Adequacy of peripheral nerve response
Factors that
-Equalizing peripheral nerve response
Affect SSEPs
-Filter ettects
-Limb temperature and length
-Anesthetic
3. Motor/ -If threshold is too low, it may be diflcult to elicit a wave in absence of muscle
Sensory relaxant.
Threshold
-Measured for adequacy by measuring potential at Erb's Point and the
4. Adequacy of Popliteal Fossa.
Pe-ripheral -Nerves are considered saturated when waveform amplitude is unattected
Nerve by continuing increase of stimulation.
Response
5. Filter Effects -Phase lead (low frequency filter) and phase lag (high frequency filter)
ettects are present in SSEPs.
-Lower the number, later the latency.
-Notch filter should only be used in extreme cases of 60 Hz interference, as it
attects waveform latency and amplitude.
-BAEPs also attected.
6. Limb
Tempera-ture 7. Anesthetic Fac-tors
and Length
1/
16
, SSEPs and VEPs – CNIM Exam with all Correct & 100% Verified
Answers |Actual Complete Exam |Already Graded A+
-Waveform latency and
amplitude attected by
temperature.
-Increased latency with
increased limb length.
-Temperature attects
conduction velocity of
neuron.
-Attect SSEP recordings
and BAEP recordings.
-SSEPs more attected
because they are recorded
from sensory cortex and
not the brainstem.
Sensory cortex more
attected by anesthetics.
2/
16
, SSEPs and VEPs – CNIM Exam with all Correct & 100% Verified
Answers |Actual Complete Exam |Already Graded A+
-Inhalation anesthetics attect cortically generated waveforms by depressing
activity in the cortex.
8. Pathologic -May or may not be problems with the nerves themselves.
Fac-tors -Some factors include issues with circulation and edema in area of
stimulating electrodes.
-Friedreich's Ataxia
-Multiple Sclerosis (MS)
-Huntington's Chorea
9. Friedreich's -Heritable disorder
Atax-ia -Gait disturbance (ataxia), speech problems, and heart disease.
-Results from degeneration of sensory nerve tissue.
-Primarily attects spinal cord and peripheral nerves.
-Sclerosis and degeneration of dorsal root ganglion, spinocerebellar tracts,
lateral corticospinal tracts, and dorsal column.
-Hearing and vision can be attected.
-SSEPs become abnormal as symptoms progress.
10. Multiple
Sclerosis (MS) -Autoimmune disease in which immune system attaches the CNS,
leading to demyelination of axons.
-Increase SSEP absolute and interpeak latencies.
11. Huntingto
n's Chorea -Onset of uncoordinated, jerky body movements and decline in some
mental abilities.
-Attects cortical response amplitude and latency in SSEPs.
12. Peripheral
Neu-ropathy -Damage to the peripheral nerves from diseases, toxins, vitamin
deficiencies, and physical trauma.
-Can attect SSEPs.
13. Stimulator
Elec-trode -Median Nerve Stimulation
Placement -Ulnar Nerve Stimulation
3/
16
