A 7-year-old girl is brought to clinic because her teacher reports multiple daily episodes during which she abruptly stops speaking and stares for about 10 seconds, then resumes activity immediately without postictal confusion. Vital signs are normal (BP 105/68, HR 88, RR 20, Temp 98.6°F, SpO2 98%). Hyperventilation during examination reproduces the event. EEG shows 3-Hz spike-and-wave discharges. She denies recent head trauma or fever. Which EEG pattern is most likely present during these episodes?
- A)Hypsarrhythmia
- B)Periodic sharp wave complexes
- C)3 Hz spike and wave dischargesGABARITO
- D)Focal temporal spikes
- E)1 Hz generalized sharp waves
Explicação
3 Hz spike and wave discharges is correct. Absence seizures cause brief lapses in awareness in children, often provoked by hyperventilation, without postictal confusion. The classic EEG finding is generalized 3 Hz spike and wave activity. Ver explicação completa e trilha adaptativa →