Quiz Form
Question Date: 14/12/2023
Question: 4 What is the classical EEG finding?<br><br>6 months baby girl<br>Multiple episodes of head drops<br>Occurring in clusters especially after awakening from sleep<br>No perinatal complications, social and developmental milestones preserved<br>Inter-ictal EEG is shown besides.
Options:
- Hypnogogic Hypersynchrony
- Hypsarrhythmia
- Patting artefact
- Burst Suppression pattern
Correct Answer: Hypsarrhythmia
View Image: Image_202312111146466576f6a632ad5.jpg
Explaination: Chaotic, asynchronous, disorganised<br><br>High voltage (>200 V), slow waves <br><br>Intermixed spike and sharp wave discharges<br><br>Prototypic pattern seen in early stageWS, in younger infants<br><br>Initially appear in the sleep EEG record and subsequently present during the awake state<br><br>Hypsarrhythmia rarely persists beyond the age of 24 months. It may evolve into the slow spike and wave discharges seen in Lennox-Gastaut syndrome<br><br>Variations of the prototypic pattern (modified hypsarrhythmia)<br>hypsarrhythmia with increased interhemispheric synchronization, <br>asymmetrical hypsarrhythmia<br>hypsarrhythmia with a consistent focus of abnormal discharge<br>hypsarrhythmia with episodes of attenuation<br>hypsarrhythmia comprising primarily high-voltage slow activity with little sharp-wave or spike activity.
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