TABLE 3.

The Visual EEG Confusion Assessment Method Severity Scores

Visual EEG Features	Score
Absent sleep transients (spindles, K-complexes, vertex waves)	1
Generalized/diffuse theta slowing	1
Generalized rhythmic delta activity	1
Lateralized rhythmic delta activity	1
Lateralized periodic discharges	2
Low voltage: moderate (< 20 μV)	2
Generalized/diffuse delta slowing	2
Generalized periodic discharges (with or without triphasic morphology/triphasic waves) or bilateral independent periodic discharges	4
Intermittent brief attenuation	6
Extreme delta brush	20 (worst delirium severity)
Nonconvulsive status epilepticus: generalized
Low voltage: extreme/electrocerebral silence
Burst suppression (with or without epileptiform activity)
Unreactive EEG

^aGGLS—GLV—GB—I—W “Things to take skiing: 1—goggles, 2—gloves, 4—good boots, 6—insurance, W—water.”

(1) GGLS: G = “GRDA, ” G = “Generalized Theta,” “L = “LRDA,” and S = “Sleep missing.”

(2) GLV: G = “Generalized Delta,” “L = “LPDs,” and V = “Low Voltage.”

(4) GB = “GPDs or BiPDs.”

(6) I = “Intermittent Brief Attenuation” and (W) Worst.