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EEG board 3 > EEG 3 > Flashcards

EEG 3 Flashcards

1
Q

If a patient starts to have a seizure during photic stimulation, the technologist should?

A

Turn off photic stimulator

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2
Q

Glossokinetic artifact

A

Biological

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3
Q

EEG signs of normal drowsiness (NREM stage N1 sleep) include all of the following except:

A

Left anterior temporal delta activity

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4
Q

Which of the following EEG pattern is MOST likely associated with seizures?

A

TIRDA

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5
Q

ORDA is commonly seen in children with

A

Absence SZ

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6
Q

While recording using a bipolar montage, you notice that the channel C4-P4 is unusually flat compared to the other channels. What is a possible cause?

A

The electrodes are too close together

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7
Q

At what age range is hypnagogic hypersynchrony most prominent?

A

2 - 6 years old

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8
Q

Which of the following occurs during a typical absence seizure?

A

Impaired consciousness

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9
Q

What are the most significant findings in the sample?

A

Generalized spike and wave

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10
Q

Which of the following is the most appropriate instrumentation setting change that should be made in order to enhance cortical slowing?

A

Cjamge the LFF from 1 hz to .1 Hz

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11
Q

Which of the following is most useful in the evaluation of temporal lobe sezures?

A

Sleep EEG

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12
Q

Negative polarity

A

Alpha rhythm

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13
Q

14 and 6/sec Hz positive spikes are best demonstrated with a reference to

A

Contralateral ear

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14
Q

A pattern of 1 to 1.5 Hz activity with superimposed 8 to 20 Hz activity seen in neonates is called.

A

Delta brush

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15
Q

Which of the following would be considered an abnormal EEG presentation to photic stimulation?

A

Photoparoxysmal

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16
Q

What is the most prominent clinical feature of Dilantin toxicity?

A

Ataxia

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17
Q

An underlying lesion of white matter will more likely result in

A

Focal slowing

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18
Q

A LFF setting of 5 Hz will attenuate a 5 Hz wave by approximately:

A

0.3

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19
Q

Sweat artifact is severely obscuring the EEG. What is the FIRST step the technologist should take to eliminate the artifact?

A

Cool the patient down by removing blanket and fanning patient.

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20
Q

A 25 year old female admitted with new onset psychosis was given 3 mg of Ativan prior to EEG recording. How would this medication affect the EEG?

A

Increased beta activity

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21
Q

According to ACNS guidelines, EEG recordings should include a minimum of _____ channels and _____ electrodes.

A

16;21

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22
Q

What would you expect to see in the frontal regions of a normal adult?

A

low voltage fast activity and eye movment artifact

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23
Q

According to the Adult ACNS EEG Terminology, a pattern that is bilateral, bisynchronous and asymmetric, even if it has a restricted field, is termed

A

generalized

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24
Q

Hypothalamic Hamartoma

A

Gelastic SZ

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25
Q

No difference in voltage between input 1 and input 2

A

Equipotential

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26
Q

Which of the following is abnormal?

A

Asymmetric attenuation of the alpha activity

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27
Q

In a 27 week gestational age neonate, where are delta brushes expected to be seen MOST prominently?

A

Central

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28
Q

This wave form is caused by an arousal

A

K complexes

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29
Q

Of the following, which is NOT an ACNS guideline for ECI recording?
A. Record at the standard sensitivity setting of 7 V/mm for at least 30 minutes of therecording.
B. Montages used should include electrode pairs that are at least 10 cm apart.
C. The integrity of the entire system should be tested by tapping each electrode individually.
D. High frequency filters should not be set below 30 Hz, and low frequency filters should not be set about 1 Hz.

A

Record at the standard sensitivity setting of 7uV/mm for at least 30 minutes of the recording

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30
Q 
Hyperventilation
A.  Hypoatremia
B. Hypocapnia
C.  Hypercapnia
D.  Hyperglycemia
A

Hypocapnia

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31
Q 
Excessive beta frequency activity may be the result of which of the following?
A.  Drowsiness
B.  Sleep deprivation
C.  Age
D.  Skull Breach
A

Skull breach

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32
Q 
Seen most often in children
A.  Rolandic Spikes
B. Wicket spikes
C.  Temporal Spikes
D. Generalized Spikes
A

Rolandic spikes

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33
Q 
What type of seizure is associated with Lennox-Gastaut Syndrome?
A.  Atonic Seizures
B. All are Correct
C.  Generalized Tonic-Clonic Seizures
D.  Atypical Absence
A

All are correct

34
Q

In a normal 28-week pre-term infant, the EEG should show what type of pattern?

A

Trace discontinu

35
Q

What additional electrodes could be placed to help decipher between artifact and cortical activity in this sample?

A

EOG electrodes

36
Q 
Frequency Response Curve
A.  Sensitivity
B. Filters
C.  Input impedance
D.  Duration
A

Filters

37
Q 
Compared to recordings from adult patients, pediatric EEG recordings have amplitudes that are:
A.  Higher
B.  Similar
C.  Lower
D.  Less Variable
A

Higher

38
Q 
What type of physiological arifact is seen in this sample?
A.  60 Hz
B.  EKG arifact
C. Muscle artifact
D.  Pulse artifact
A

EKG arifact

39
Q 
An EEG shows eye blink and muscle artifact.  What is the likely state of the patient?
A.  Stage 1 sleep
B.  Drowsy
C.  REM
D.  Awake
A

Awake

40
Q

A patient has generalized tonic-clonic seizure during EEG recording. If one electrode is pulled off, which of the following is the primary responsibility of the EEG technologist?
A. Fix the electrode and then attend to the patient.
B. Stop the recording and fix the electrode.
C. Protect the patient from injury and keep EEG running.
D. Stop the recording and protect the patient from injury.

A

Protect the patient from injury and keep EEG running

41
Q 
The EEG of a patient with Down's syndrome is most likely to show:
A.  paroxysmal fast activity
B.  High amplitude delta slowing
C.  slow spike and wave
D.  normal activity
A

Normal Activity

42
Q

Input impedance should be
A. very high
B. very low
C. equal to the common mode rejection ration.
D. Less than the common mode rejection ration.

A

Very high

43
Q

If theta activity from a drowsy child recorded at a sensitivity of 7 uV/mm results in a deflection of 20 mm, what is the voltage?

A

140 uV

44
Q

Broken lead wire during a recording:
A. can be corrected using a software patch
B. Can cause a dangerous leakage current.
C. requires rplacement
D. Not important, since the system reference can still be used as input two.

A

requires replacement

45
Q 
Which encephalopathic EEG pattern is most commonly associated with children?
A.  TIRDA
B.  FIRDA
C.  OIRDA
D. GIRDA
A

OIRDA

46
Q 
An abbreviated 10-20 placement, respiration, ECG and EOG monitors should be used when recording
A.  Neonates
B.  ICU Patients
C.  Elderly patients
D.  Toddlers
A

Neonates

47
Q

Normal EEG in adults of age 70 or older is similar to those younger with the following exception:
A. Slow waves are less prominent.
B. Alpha becomes more reactive.
C. Beta is rarely seen.
D. REM sleep is less than 20% of total sleep time

A

REM sleep is less than 20% of total sleep time

48
Q 
What should be the first reaction to 60 Hz artifact in one electrode?
A.  Change the montage.
B.  Check electrode impedance
C.  Turn on the 60 Hz filter
D.  Utilize the high filter.
A

Check electrode impedance

49
Q 
The EEG finding during REM sleep:
A.  Saw tooth waves
B.  V-waves
C.  Spindles
D.  POSTS
A

Saw tooth waves

50
Q

What environmental factor enhance LAMBDA?
A. Noxious timuli
B. Loud sounds
C. Low illumination visual scene
D. Scanning high complexity visual scene

A

Scanning high complexity visual scene

51
Q 
PLEDs are NOT typically seen in patients with
A.  Acute cerebral infarct
B.  Herpes simplex encephalitis
C.  Lennox-Gastaut
D.  Acute cerebral lesions
A

Lennox-Gastaut

52
Q 
At what age do encoches frontales first appear?
A.  34-37 weeks CA
B.  4 months
C.  34-37 weeks GA
D.  29-31 Weeks CA
A

34-37 week CA

53
Q 
Which of the following activation procedures should be AVOIDED in a patient with a recent intracranial hemorrhage?
A.  Mental exertion
B.  Photic Stimulation
C.  Sleep
D.  Hyperventilation
A

Hyperventilation

54
Q

Alpha Coma
A. Nonreactive activity, 0.5-4 Hz
B. No recordable cerebral activity
C. 8-13 Hz activity occuring diffusely, maximum anteriorly
D. Diffuse rhythmic 5 Hz activity, maximum anteriorly.

A

8-13 Hz activity occuring diffusely, maximum anteriorly

55
Q

Increasing the number of seconds displayed on the monitor
A. decreases spike duration
B. does not change spike amplitude or duration
C. Increases spike amplitutde
D. Increases spike duration.

A

does not change spike amplitude or duration

56
Q 
Mu rhythm and alpha rhythm differ from each other in all of the following respects EXCEPT:
A.  frequency
B.  incidence
C. form 
D. topography
A

frequenty

57
Q 
Subclinical Rhythmic Electrographic Discharge in Adults (SREDA) most often appears:
A.  Suddenly in resting EEG
B.  Unilaterally
C.  in those under age 50
D.  during photic stimulation
A

suddenly in resting EEG

58
Q 
What is most useful when determining localization and polarity?
A.  Montage
B.  Amplitude
C.  Activation
D.  Frequency
A

montage

59
Q 
According to the Adult ACNS EEG Terminology, a pattern that has at least three independent lateralized patterns with at least one in each hemisphere is 
A.  bilateral independent
B.  multifocal
C.  focal
D.  lateralized
A

multifocal

60
Q 
Which of the following extra electrodes might best demonstrate the EEG activity associated with focal motor twitching of the right corner of the mouth?
A.  P5
B.  FT9 (T1)
C.  C5
D.  C1
A

C5

61
Q 
A slow wave focus is best seen with.
A.  LF 0.3 Hz, paper speed 60 mm/sec
B.  LF 0.3 Hz, paper speed 15 mm/sec.
C.  LF 5 Hz, paper speed 15 mm/sec.
D.  HF 70 Hz, paper speed 60 mm/sec.
A

LF 0.3 Hz, paper speed 15 mm/sec.

62
Q 
Which of the following is one of the 10 ACNS Guideline for ECI recordings?
A.  Utilization of eyelead monitors
B.  Application of double grounds
C.  Use of double distance montages
D. Application of movement transducers
A

use of double distance montages

63
Q 
Which of the following medications would be expected to increase beta frequency acitivity?
A.  Paxil (paroxetine)
B.  Topamax (topirimate)
C.  Xanax (alprazolam)
D.  Imitrex (sumatryptan)
A

Xanax (alprazolam)

64
Q 
Calculate the duration of the waveform in the box
A.  225 msec
B.  150 msec
C.  250 msec
D.  50 msced
A

150 msec

65
Q

Which is the most important when evaluating background frequency?
A. quality of sleep and hyperventilation effort
B. wakefulness and age
C. photic stimulation and stimulting frequencies
D. Medications and allergies

A

wakefulness and age

66
Q 
Positive Polarity
A.  Lambda
B.  Vertex sharp wave
C.  Mu rhythm
D. PLEDs
A

Lambda

67
Q 
A 9 mm deflection at a setting of 20 microvolts/mm will have an input signal of 
A.  100 microvolts
B.  180 microvolts
C. 30 microvolts
D. 3 microvolts
A

180 microvolts

68
Q

Which of the following is importanat for the technologist to document in order to aid in interpretation?
A. the patient was uncooperative.
B. the patient was awake and alert during the recording
C. the patient has a low grade fever.
D. Hyperventilation was not performed due to severe asthma.

A

The patient was awake and alert during the recording

69
Q 
Mu Rhythm
A.  P3/P4
B.  O1/P2
C.  C3/C4
D.  T5/T6
A

C3/C4

70
Q

To enhance the background alpha and beta asymmetry in an EEG record showing moderately high voltage delta activity, the technologist should use a
A. shorter time constant and increased sensitivity
B. longer time constant and increased sensitiviy
C. shorter time constant and decreased sensitivity
D. longer time constant and decreased sensitivity

A

shorter time constanct and increased sensitivity

71
Q 
Alpha
A.  Diminishes with eyes open
B.  During drowsiness
C.  7-12 Hz
D.  Awake with eyes open
A

diminishes with eyes open

72
Q 
Brain Abcess
A.  ECI
B.  Burst suppression
C.  Focal polymorphic delta activity.
D.  Diffuse slowing
A

focal polymorphic delta activity

73
Q 
What normal activity would be seen most prominently at the C3 or C4 electrode position?
A.  Mu
B.  FIRDA
C.  POSTS
D.  Alpha
A

Mu

74
Q 
The interictal EEG of children with a history of untreated febrile seizures usually is 
A.  diffusel paroxysmal
B.  asynchronous and slow
C.  normal
D.  excessively fast
A

Normal

75
Q 
1 Centimeter
A.  1 inch
B.  100 mm
C.  .01 mm
D.  10 mm
A

10 mm

76
Q 
Used in treatment for only generalized seizures, commonly in absence epilepsy treatment
A.  ACTH
B.  Phenobarbital
C.  Ethosuximide
D.  Dilantin
A

ACTH

77
Q

While performing an EEG hookup, C4 must be moved 1 cm posteriorly due to an incision on the patient’s scalp. What else must the technologist do?
A. move F4 1 cm posteriorly
B. move no other electrodes other than C4
C. Move all electrodes 1 cm posteriorly
D. Move C3 1 cm posteriorly

A

move C3 1 cm posteriorly

78
Q

A subharmonic Photic driving response is:
A. The exact frequency of the flash strobe
B. Attenuation for duration of flash strobe
C. Half the frequency of the flash strobe
D. Twice the frequency of the flash strobe.

A

Half the frequency fo the flash strobe

79
Q 
Glossokinetic
A.  Head movement
B. Eye Movement
C.  Chewing
D. Tongue Movement
A

Tongue Movement

80
Q

Posterior Dominant Rhythm (PDR) or Alpha Rhythm should not be calculated immediately upon eye closure because of what normal variant?
A. Alpha squeak
B. Clenoids
C. Slow Alpha Variant
D. Posterior Slow Waves of Youth (PSWOY)

A

Alpha Squeak

EEG board 3 (1 decks)

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