Anesthesia and analgesia
-
Anesthesia and analgesia · Sep 2005
ReviewDifferent conditions that could result in the bispectral index indicating an incorrect hypnotic state.
Since its introduction in 1996, the Bispectral Index (BIS) has gained increasing popularity in daily anesthesia practice. However, numerous reports have been appearing in the literature of paradoxical BIS changes and inaccurate readings. ⋯ This would be misinterpreted by the BIS algorithm as EEG activity and assigned a spuriously increased BIS value. Numerous clinical conditions that have a direct effect on EEG cerebral function could also directly influence the BIS value.