BIS
Also written as: BIS — Bispectral Index
Acronym for Bispectral Index, a processed EEG-based numerical scale measuring sedation depth ranging from 0 (isoelectric) to 100 (fully awake).
Full Definition
BIS is the abbreviation universally used in anesthesiology literature for the bispectral index. It appears on monitoring displays and in clinical documentation as a two- or three-digit value. Editors encountering BIS in dental anesthesia manuscripts should verify that the value is cited alongside its target range and that first use is expanded as 'bispectral index (BIS).' Confusion with 'b.i.s.' (Latin bis in die, 'twice daily') is a known editorial trap; context always disambiguates.
Usage
Usage note: Do not confuse with the Latin prescription abbreviation b.i.s. (twice daily); context in dental anesthesia documents will always indicate the monitoring parameter.
In Context
- "A BIS value of 58 was recorded at the time of incision, indicating adequate hypnotic depth." — Operative report
- "Expand BIS on first mention in the abstract and body text." — Copy-editing instruction