II.O Normal / abnormal neonatal EEG

Question 1

At what conceptional age is a delta brush pattern primarily seen?
A) 40 to 44 weeks
B) 32 to 34 weeks
C) 46 to 48 weeks
D) Before 24 weeks

Answer 1

32 to 34 weeks

Question 2

Right temporal sharp transients recorded during wakefulness in a 38 week conceptual age infant:
A) is typical for neonatal Herpes encephalitis
B) is a non-specific indicator of right temporal dysfunction
C) is normal for age
D) is an interictal epileptiform abnormality which correlates with focal seizures

Answer 2

is a non-specific indicator of right temporal dysfunction

Question 3

This neonate pattern is associated with interburst intervals that are less than 25 uV in amplitude and are expected up to 34 weeks postmenstrual age.
A) Enconches Frontales
B) Trace’ Discontinu
C) Delta Brush
D) Trace Alternant

Answer 3

Trace’ Discontinu

Question 4

Delta brushes are seen in what type of patients?
A) Full-term infants
B) Premature infants
C) Adults
D) Pediatrics

Answer 4

Premature infants

Question 5

Temporal theta burst is an EEG feature seen in which neonatal age group?
A) 24-28 weeks gestation
B) 34-37 weeks gestation
C) 38-44 weeks gestation
D) 44-52 weeks gestation

Answer 5

24-28 weeks gestation

Question 6

A neonatal EEG showing eye movements, body twitches, absent chin myogram, and irregular respirations confirms the patient is in what state?
A) Quiet sleep
B) Active sleep
C) Non-REM
D) Awake

Answer 6

Active sleep

Question 7

The pattern which appears at the youngest postmenstrual age (PMA) is?
A) delta brushes
B) frontal rhythmic delta (“anterior slow dyrhythmia”)
C) trace alternant
D) frontal sharp transients (Encoches Frontales)

Answer 7

delta brushes

Question 8

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

Answer 8

34-37 weeks CA (not GA)

Question 9

TRACE ALTERNANT
A) 25 weeks conceptual age
B) 55 weeks conceptual age
C) 35 weeks conceptual age
D) 45 weeks conceptual age

Answer 9

35 weeks conceptual age

Question 10

In a 38-week conceptional age infant, which of the following would be considered abnormal?
A) Frontal sharp transients
B) Trace alternant
C) Left hemisphere voltage suppression
D) Delta brushes

Answer 10

Left hemisphere voltage suppression

Question 11

In a normal 28-week pre-term infant, the EEG should show what type of pattern?
A) Hypnagogic hypersynchrony
B) Trace’ discontinu
C) Vertex waves and sleep spindles
D) Hypsarrhythmia

Answer 11

Trace’ discontinu

Question 12

A pattern of 1 to 1.5 Hz activity with superimposed 8 to 20 Hz activity seen in neonates is called
A) paroxysmal temporal theta
B) frontal sharp transients
C) delta brush
D) anterior slow dysrhythmia

Answer 12

delta brush

Question 13

In a 27 week gestational age neonate, where are delta brushes expected to be seen MOST prominently?
A) Occipital
B) Frontal
C) Delta brushes are not seen at 27 weeks gestation
D) Central

Answer 13

Central

Question 14

Which of the following is most likely to be the finding in a full term neonate with seizures?
A) Focal spikes and sharp waves
B) Trace’/Discontinu
C) Generalized spike and sharp waves
D) Asymmetrical beta

Answer 14

Focal spike and sharp waves

Question 15

At what conceptual age would you expect Delta brushes to no longer be present?
A) 38 CA
B) 44 CA
C) 42 CA
D) 40 CA

Answer 15

44 CA

Question 16

Sleep stages in a term newborn infant are
A) abnormal if discontinuous
B) slow to change from stage to stage
C) characterized by rapid onset active sleep
D) in same sequence as adults

Answer 16

characterized by rapid onset active sleep.

Question 17

Which of the following is a normal EEG pattern found at about 32 weeks conceptional age?
A) Delta brush
B) Hypnagogic hypersynchrony
C) Sleep spindle
D) Vertex wave

Answer 17

Delta brush

Question 18

Delta brushes are seen in
A) awake neonate
B) neonate, quiet sleep
C) full-term infant, REM sleep
D) full-term infant, active sleep

Answer 18

neonate, quiet sleep.

Question 19

At the onset of sleep, a 40-week conceptional age infant is most likely to enter into which of the following states of sleep?
A) Stage N1
B) Quiet
C) Active
D) Stage N2

Answer 19

Active

Question 20

Which of the following is a random disorganized pattern characterized by extremely high voltage activity with slow waves and multifocal spikes and is seen with infantile spasms?
A) Vertex waves
B) Posterior slow waves of youth
C) K-complexes
D) Hypsarrhythmia

Answer 20

Hypsarrhythmia

Question 21

If the EEG of a term newborn with asphyxia shows non-reactivity and periods of severe attenuation with bursts of activity every 10 to 20 seconds, which of the following is MOST likely indicated?
A) Severe cortical injury due to hypoxic-ischemic encephalopathy
B) Normal quiet sleep pattern for that age
C) Medication effects due to therapeutic loading with phenobarbital
D) Transient effects which will probably normalize in two weeks

Answer 21

Severe cortical injury due to hypoxic-ischemic encephalopathy