EEG Pediatric and Neonatal EEG 4

Question 1

Which EEG pattern in a neonate is characterized by high-amplitude bursts separated by periods of relative quiescence and is considered normal in premature infants?

Accepted Answer

Trace alternant

Answer

Trace alternant is a normal sleep pattern in term and preterm neonates consisting of high-amplitude bursts alternating with lower-amplitude inter-burst intervals.

Question 2

What is the most appropriate low-frequency filter setting when recording neonatal EEG to capture slow cerebral activity?

Accepted Answer

1 Hz

Answer

A low-frequency filter of 1 Hz (or lower) is used in neonatal EEG to preserve slow background activity that is characteristic of the immature brain.

Question 3

In a term neonate, which finding on EEG is most consistent with hypoxic-ischemic encephalopathy (HIE)?

Accepted Answer

Burst suppression with prolonged inter-burst intervals

Answer

Burst suppression with prolonged inter-burst intervals (>10 seconds) in a term neonate is a marker of severe cerebral dysfunction associated with HIE.

Question 4

Positive rolandic sharp waves (PRSW) in neonatal EEG are most strongly associated with which condition?

Accepted Answer

Periventricular leukomalacia

Answer

Positive rolandic sharp waves are a reliable marker of periventricular white matter injury, particularly periventricular leukomalacia, in preterm neonates.

Question 5

Which behavioral state in neonates is associated with continuous low-to-moderate amplitude mixed-frequency EEG activity?

Accepted Answer

Active sleep (REM)

Answer

Active (REM) sleep in neonates is characterized by continuous, relatively low-amplitude mixed-frequency activity similar to wakefulness.

EEG - Electroencephalography Practice Test

EEG - Electroencephalography Practice Test

EEG Pediatric and Neonatal EEG 4