Table 1.

Narcotrend™ stages and the respective Narcotrend™ index ranges (software version 4.0)

	Narcotrend™
	Stage	Index
Awake	A	95–100
Sedated	B0	90–94
	B1	85–89
	B2	80–84
Light anesthesia	C0	75–79
	C1	70–74
	C2	65–69
General anesthesia	D0	57–64
	D1	47–56
	D2	37–46
General anesthesia with deep hypnosis	E0	27–36
	E1	20–26
	E2	13–19
General anesthesia with increasing burst suppression	F0	5–12
	F1	1–4