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Pediatric and Neonatal EEG Flashcards

7 cards from real EEG practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Pediatric and Neonatal EEG flashcards as text

  1. Which neonatal seizure type is most commonly electrographic-only (without clinical correlate) and therefore detectable only by EEG?

    Answer: Electrographic-only (subclinical) seizures

    Subclinical (electrographic-only) seizures in neonates have no visible clinical manifestation and can only be detected through continuous EEG monitoring.

  2. The 'delta brush' pattern in neonatal EEG consists of what characteristic morphology?

    Answer: High-amplitude delta waves with superimposed fast activity (beta)

    Delta brushes are high-amplitude delta waves with superimposed fast (beta) activity, normally seen in premature neonates between 26–32 weeks gestational age.

  3. In childhood absence epilepsy, the typical ictal EEG discharge consists of:

    Answer: 3 Hz spike-and-wave

    Childhood absence epilepsy is characterized by generalized, symmetric 3 Hz (2.5–4 Hz) spike-and-wave complexes that are abrupt in onset and termination.

  4. What is the significance of a markedly asymmetric background in neonatal EEG?

    Answer: It suggests ipsilateral hemispheric injury or contralateral hemispheric dysfunction

    Persistent interhemispheric amplitude asymmetry (>50%) in a neonate suggests structural injury on the side with attenuated activity or dysfunction on the opposite side.

  5. Which EEG feature helps distinguish benign childhood epilepsy with centrotemporal spikes (BECTS/BCECTS) from other focal epilepsies?

    Answer: High-amplitude centrotemporal spikes that increase during NREM sleep and have a characteristic horizontal dipole

    BECTS is characterized by high-amplitude centrotemporal sharp waves with a horizontal dipole that markedly activate (increase in frequency) during NREM sleep.

  6. A preterm neonate at 28 weeks gestational age should demonstrate what characteristic EEG background pattern?

    Answer: Highly discontinuous pattern with long interburst intervals (up to 60 seconds)

    At 28 weeks gestational age, the normal EEG is highly discontinuous with interburst intervals that can normally last up to 60 seconds, reflecting cerebral immaturity.

  7. In Lennox-Gastaut syndrome (LGS), which EEG pattern is characteristically seen during wakefulness?

    Answer: Slow (<2.5 Hz) generalized spike-and-wave complexes

    LGS is characterized by slow (<2.5 Hz, typically 1.5–2.5 Hz) generalized spike-and-wave complexes during wakefulness, distinguishing it from childhood absence epilepsy.