1. Introduction & Indication
2. Background Activity
ACNS 2021: reactivity is a change in voltage or frequency to stimulation; specify stimulus type and character of response.
Excess Background Slow Activity
Diffuse slowing intruding on an otherwise preserved background — not focal slowing.
Serial / Titration Course (optional)
Inserted as a chronological lead-in before the structured background description below, which should describe the final or most clinically representative state.
Confidence: not used
3. Sleep
vertex waves
sleep spindles
K-complexes
POSTS
slow-wave activity
REM features
alpha dropout
3b. Normal Variants & Artifacts
Select all that apply — multiple allowed
Mu rhythm
Wicket spikes
SSS / BETS
RMTD
SREDA
14 & 6 Hz bursts
Phantom 6 Hz S&W
Breach rhythm
Lambda waves
Alpha variant
Muscle/EMG
Eye blink
Lateral eye mvt
ECG artifact
60 Hz line noise
Electrode pop
Sweat/drift
Chewing
Ventilator
IV/pump
4. Slowing / Non-Epileptiform Abnormalities
Slowing Characteristics
ACNS 2021 bands = proportion of the epoch. "Intermittent" is a temporal descriptor, not an ACNS prevalence band.
Confidence: not used
Controls whether borderline temporal theta drives the EEG classification.
5. Epileptiform Activity
Epileptiform Characteristics
Sporadic discharges use a rate scale, not the percentage-of-epoch scale used for rhythmic/periodic patterns.
For spike-and-wave / polyspike, e.g. 3 Hz (absence), 3–4 Hz (JME).
L temporal
R temporal
L frontotemporal
R frontotemporal
L frontal
R frontal
L central
R central
L parietal
R parietal
L occipital
R occipital
L hemispheric
R hemispheric
vertex/midline
bifrontal
generalized
Confidence: not used
6. ACNS Rhythmic / Periodic Pattern
ACNS Pattern Characterization
ACNS 2021: proportion of the epoch occupied by the pattern.
ACNS 2021; intermediate band widened from 1–4.9 to 1–9.9 min in the 2021 revision.
Confidence: not used
7. Seizures / Events
Seizure Characterization
L temporal
R temporal
L frontotemporal
R frontotemporal
L frontal
R frontal
L central
R central
L parietal
R parietal
L occipital
R occipital
vertex/midline
generalized onset
8. ECG
9. Augmentation Procedures
Ordered best to worst response. In ICU records this is the primary activation assessment.
10. Impression / Follow-up
Auto = dynamic impression from form inputs.