Auditory Steady-State Response and Bispectral Index for Assessing Level of Consciousness During Propofol Sedation and Hypnosis
Anesth Analg 2000 91: 1398-1403.
[Abstract]
[Full Text]
Implications: We have compared two methods for predicting whether the amount of propofol given to a human subject is sufficient to cause unconsciousness, defined as failure to respond to a simple verbal command. The two methods studied are the auditory steady-state response, which measures the electrical response of the brain to sound, and the bispectral index, which is a number derived from the electroencephalogram. The results showed that both methods are very good predictors of the level of consciousness; however, bispectral was easier to use.