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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