Bispectral Index Values Are Accurate Diagnostic Indices Correlated With Glasgow Coma Scale Scores.

Objective: The Glasgow Coma Scale (GCS) is widely used in neurosurgery to evaluate the depth of coma in patients with brain injury. The bispectral index (BIS) was developed primarily to monitor the depth of unconsciousness. Recent evidence suggests that BIS may also help in the assessment of brain injury.