Bispectral index (BIS) monitor
A monitor that processes the patient's frontal EEG and reduces it to a dimensionless index (0-100) correlated with hypnotic depth.
How it is used
Monitoring of anesthetic depth to prevent intraoperative awareness, especially under neuromuscular relaxation.
Clinical tip
It is the most widely used objective tool precisely in deeply sedated or relaxed patients, where subjective sedation scales are unreliable.
Sources
This entry is part of the Instriq catalog, researched and written per specialty from real web research -- never generated or invented without verification -- and reviewed skeptically and independently before publication. How this catalog is written.
Image: Ignis, Wikimedia Commons. License CC BY-SA 3.0 (también GFDL 1.2+). View original source.
