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ICU and Continuous EEG Monitoring Flashcards

6 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 6 ICU and Continuous EEG Monitoring flashcards as text

  1. Generalized periodic discharges (GPDs) are most classically associated with which condition?

    Answer: Creutzfeldt-Jakob disease (CJD)

    GPDs (formerly called generalized PLEDs or BiPLEDs) with a triphasic morphology are classically associated with CJD, though they also appear in metabolic encephalopathies.

  2. Triphasic waves on EEG in an ICU patient most commonly indicate:

    Answer: Toxic-metabolic encephalopathy such as hepatic or uremic encephalopathy

    Triphasic waves — broad, anteriorly dominant GPDs with three phases — are a classic EEG marker of metabolic encephalopathy, particularly hepatic or uremic encephalopathy.

  3. Electrocerebral silence (ECS) on EEG, required for brain death determination, must be recorded at a sensitivity of:

    Answer: 2 µV/mm for 30 minutes with inter-electrode distances ≥10 cm

    ACNS guidelines for EEG confirmation of brain death require recording at ≥2 µV/mm sensitivity for at least 30 minutes, using electrodes ≥10 cm apart, with no reactivity.

  4. In the ACNS ICU EEG terminology, the '+F' modifier on a periodic discharge pattern indicates:

    Answer: Superimposed fast activity on the discharge

    The '+F' modifier in ACNS standardized terminology denotes the presence of superimposed fast (beta-range) activity riding on top of the periodic or rhythmic discharge.

  5. A cEEG monitoring technologist notices sudden onset of rhythmic, evolving 2 Hz sharp-wave activity for 90 seconds followed by postictal slowing. This is best classified as:

    Answer: Electrographic seizure

    An electrographic seizure requires evolution in frequency, morphology, or spatial distribution lasting ≥10 seconds, and this pattern with evolution and postictal slowing meets criteria.

  6. Which EEG background feature in a comatose patient after cardiac arrest is associated with the BEST neurological prognosis?

    Answer: Continuous background with preserved reactivity

    A continuous EEG background with preserved reactivity to stimulation is the most favorable prognostic finding in post-cardiac arrest coma, suggesting intact cortical function.