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Table 1 BIS value and clinical states

From: Role of bispectral index monitoring and burst suppression in prognostication following out-of-hospital cardiac arrest: a systematic review protocol

BIS index range

Clinical state

100

Awake: responds to normal voice

80

Light to moderate sedation: may respond to loud commands

60

General anaesthesia

40

Deep hypnotic state

20

Burst suppression

0

Flat-line EEG