BIS MONITORING
BIS monitoring provides direct information about the effects of anesthetics and sedatives on the brain. The technology works by placing a BIS sensor on a patient's forehead to obtain information from electrical brain activity, or EEG. The BIS monitor then translates this information into a single number from 100 (indicating an awake patient) to zero (indicating the absence of brain electrical activity) that objectively represents each patient's level of consciousness. BIS monitoring thereby enables clinicians to minimize the risk of under- and over- dosing of anesthetics and sedatives. Other vital signs, such as heart rate and blood pressure, do not correlate with depth of consciousness and are unreliable measures of adequate anesthesia and sedation.
