Eeg Board Prep Exam Newest Exam | All Questions And Correct Answers |
Already Graded A+ | Verified Answers | Latest Version (Just Released)
SSS/BETS (small sharp waves / benign epileptiform transients of sleep) - (CORRECT
ANSWER)Low voltage, short duration, diphasic spikes with a steep descending limb. Usually
seen in drowsiness and light sleep.
SREDA (subclinical rhythmic electrographic discharges of adults) - (CORRECT
ANSWER)Sharply contoured theta activity in the posterior head region. A normal variant in
older adults during wakefullness.
14 and 6 positive spikes - (CORRECT ANSWER)1-2 seconds of sharply contoured discharges in
the posterior head regions in light sleep. Presents in adolescents.
6 hz spike and wave - (CORRECT ANSWER)Midparietal low amplitude discharges. Occurs in
young adults in drowsiness and disappears in sleep.
My rhythm - (CORRECT ANSWER)Oscillating 10 hz waves seen in leads overylying the
senserimotor cortex in the absence of movement. If a patient moves or thinks about moving their
contralateral limb, this rhythm will be suppressed.
Wickets - (CORRECT ANSWER)Symmetric monophasic sharp wave occuring predominantly in
older adults during light sleep in temporal leads without disruption of the background.
3 hz slow wave activity - (CORRECT ANSWER)3 hz waves without an associated spike which
can be seen during hyperventilation in childhood
RTTBD (rhythmic temporal theta bursts of drowsiness) - (CORRECT ANSWER)5-6 hz
rhythmic waves in the temporal lobe. Seen in young adults during drowsiness.
Breach rhythm - (CORRECT ANSWER)Unilateral high voltage iregular wave rhythms due to
alteration of conductance commonly seen in patients with a skull defect.
1
,Anterior eye blinks (bells phenomenon) - (CORRECT ANSWER)Positive downward deflection,
maximal in the frontopolar leads, followed by a negative deflection from eye opening.
Disappears in sleep.
EKG - (CORRECT ANSWER)Rhythmic electropositive discharges in one or multiple leads,
most often in the occipital leads. Time locked and synchronous with the EKG tracing.
Pulse - (CORRECT ANSWER)Rhythmic slow waves in a single lead due to a close pulsating
vessel. Time locked but delayed after each QRS sample.
Lateral eye movements - (CORRECT ANSWER)Very slow out of phase derivations involving
anterior electrodes due to movement of the positively charged cornea. Best appreciated in
drowsiness and early sleep when patient experience rolling eye movements.
Muscle - (CORRECT ANSWER)Extremely high frequency waves often generated from the
frontalis and temporalis muscles. Usually spares central leads. Disappears in sleep.
Glossokinetic - (CORRECT ANSWER)Diffuse, low frequency discharges produced by
movements of the negative tip of the tongue. Can be induced by saying "la la la la", chewing, or
sucking.
Electrode pop - (CORRECT ANSWER)Single or multiple sharp waves localized to a single
electrode without a surrounding field. Disappears by reapplying an electrode.
GRDA (generalized rhythmic delta activity) - (CORRECT ANSWER)Generalized in all leads,
typically signifies global cerebral dysfunction, such as in a severe encephalopathy, but is not to
be a risk factor for seizure or seizure tendency.
Frontally dominant GRDA - (CORRECT ANSWER)Can be seen with a variety of pathologies
including posterior fossa lesions, intracranial lesions, and increased intraventricular pressure.
2
, LRDA (lateralized rhythmic delta) - (CORRECT ANSWER)Can be seen with focal lesions such
a hemorrhage, tumor, or stroke. Is associated with increased seizure risk/seizure tendency.
LPDs (Lateralized periodic discharges) - (CORRECT ANSWER)Often seen with focal acute or
subacute cerebral dysfunction, such as with herpes simplex enchephalitis, stroke, abscess, or
subdural hematoma.
GPDs (Generalized periodic discharges) - (CORRECT ANSWER)Felt to have highest seizure
tendency of the 'ictal-interictal' patterns. If seen clinically with rapidly progressive dementia it
can be strongly suggestive of Creutzfeldt-Jakob Disease.
End stage liver disease - (CORRECT ANSWER)This disease can present with hyperammonemia
and generalized periodic waves with triphasic morphology. They are bilaterally synchronous and
usually frontally predominant and exhibit three phases (i.e. negative, positive, negative).
Triphasic waves can also be seen in ESRD and other forms of metabolic encephalopathy.
Subdural Hematoma - (CORRECT ANSWER)Hemispheric asymmetry with the lower amplitude
discharges localizing to the affected hemisphere.
HSV Encephalitis - (CORRECT ANSWER)Due to the predilection for the temporal lobes,
patients will present with lateralized periodic discharges (LPDs) most prominent in temporal
leads.
Stroke - (CORRECT ANSWER)Shows focal irregular theta/delta activity with LRDA or LPDs.
Creuztfeldt-Jakob Disease (CJD) - (CORRECT ANSWER)Generalized periodic discharges,
spikes, and spike-waves with a disorganized background.
Fatal familial insomnia (FFI) - (CORRECT ANSWER)Loss of sleep spindles.
3
Already Graded A+ | Verified Answers | Latest Version (Just Released)
SSS/BETS (small sharp waves / benign epileptiform transients of sleep) - (CORRECT
ANSWER)Low voltage, short duration, diphasic spikes with a steep descending limb. Usually
seen in drowsiness and light sleep.
SREDA (subclinical rhythmic electrographic discharges of adults) - (CORRECT
ANSWER)Sharply contoured theta activity in the posterior head region. A normal variant in
older adults during wakefullness.
14 and 6 positive spikes - (CORRECT ANSWER)1-2 seconds of sharply contoured discharges in
the posterior head regions in light sleep. Presents in adolescents.
6 hz spike and wave - (CORRECT ANSWER)Midparietal low amplitude discharges. Occurs in
young adults in drowsiness and disappears in sleep.
My rhythm - (CORRECT ANSWER)Oscillating 10 hz waves seen in leads overylying the
senserimotor cortex in the absence of movement. If a patient moves or thinks about moving their
contralateral limb, this rhythm will be suppressed.
Wickets - (CORRECT ANSWER)Symmetric monophasic sharp wave occuring predominantly in
older adults during light sleep in temporal leads without disruption of the background.
3 hz slow wave activity - (CORRECT ANSWER)3 hz waves without an associated spike which
can be seen during hyperventilation in childhood
RTTBD (rhythmic temporal theta bursts of drowsiness) - (CORRECT ANSWER)5-6 hz
rhythmic waves in the temporal lobe. Seen in young adults during drowsiness.
Breach rhythm - (CORRECT ANSWER)Unilateral high voltage iregular wave rhythms due to
alteration of conductance commonly seen in patients with a skull defect.
1
,Anterior eye blinks (bells phenomenon) - (CORRECT ANSWER)Positive downward deflection,
maximal in the frontopolar leads, followed by a negative deflection from eye opening.
Disappears in sleep.
EKG - (CORRECT ANSWER)Rhythmic electropositive discharges in one or multiple leads,
most often in the occipital leads. Time locked and synchronous with the EKG tracing.
Pulse - (CORRECT ANSWER)Rhythmic slow waves in a single lead due to a close pulsating
vessel. Time locked but delayed after each QRS sample.
Lateral eye movements - (CORRECT ANSWER)Very slow out of phase derivations involving
anterior electrodes due to movement of the positively charged cornea. Best appreciated in
drowsiness and early sleep when patient experience rolling eye movements.
Muscle - (CORRECT ANSWER)Extremely high frequency waves often generated from the
frontalis and temporalis muscles. Usually spares central leads. Disappears in sleep.
Glossokinetic - (CORRECT ANSWER)Diffuse, low frequency discharges produced by
movements of the negative tip of the tongue. Can be induced by saying "la la la la", chewing, or
sucking.
Electrode pop - (CORRECT ANSWER)Single or multiple sharp waves localized to a single
electrode without a surrounding field. Disappears by reapplying an electrode.
GRDA (generalized rhythmic delta activity) - (CORRECT ANSWER)Generalized in all leads,
typically signifies global cerebral dysfunction, such as in a severe encephalopathy, but is not to
be a risk factor for seizure or seizure tendency.
Frontally dominant GRDA - (CORRECT ANSWER)Can be seen with a variety of pathologies
including posterior fossa lesions, intracranial lesions, and increased intraventricular pressure.
2
, LRDA (lateralized rhythmic delta) - (CORRECT ANSWER)Can be seen with focal lesions such
a hemorrhage, tumor, or stroke. Is associated with increased seizure risk/seizure tendency.
LPDs (Lateralized periodic discharges) - (CORRECT ANSWER)Often seen with focal acute or
subacute cerebral dysfunction, such as with herpes simplex enchephalitis, stroke, abscess, or
subdural hematoma.
GPDs (Generalized periodic discharges) - (CORRECT ANSWER)Felt to have highest seizure
tendency of the 'ictal-interictal' patterns. If seen clinically with rapidly progressive dementia it
can be strongly suggestive of Creutzfeldt-Jakob Disease.
End stage liver disease - (CORRECT ANSWER)This disease can present with hyperammonemia
and generalized periodic waves with triphasic morphology. They are bilaterally synchronous and
usually frontally predominant and exhibit three phases (i.e. negative, positive, negative).
Triphasic waves can also be seen in ESRD and other forms of metabolic encephalopathy.
Subdural Hematoma - (CORRECT ANSWER)Hemispheric asymmetry with the lower amplitude
discharges localizing to the affected hemisphere.
HSV Encephalitis - (CORRECT ANSWER)Due to the predilection for the temporal lobes,
patients will present with lateralized periodic discharges (LPDs) most prominent in temporal
leads.
Stroke - (CORRECT ANSWER)Shows focal irregular theta/delta activity with LRDA or LPDs.
Creuztfeldt-Jakob Disease (CJD) - (CORRECT ANSWER)Generalized periodic discharges,
spikes, and spike-waves with a disorganized background.
Fatal familial insomnia (FFI) - (CORRECT ANSWER)Loss of sleep spindles.
3
