What is the purpose of the bispectral index (BIS) monitoring?

The purpose of bispectral index (BIS) monitoring is to assess the depth of anesthesia based on brain activity. This technology utilizes electroencephalogram (EEG) data to quantify the effects of anesthetic agents on the brain and provide a numerical value that reflects the patient's level of consciousness. The BIS value helps anesthetists determine whether a patient is adequately anesthetized, helping to avoid both under-anesthesia and over-anesthesia, both of which can have serious implications for patient safety and outcomes.

By quantitatively reflecting the brain's electrical activity, BIS monitoring allows for more precise adjustments to anesthesia, ultimately facilitating a more controlled and comfortable procedure for the patient. This is especially important in surgeries requiring varying levels of anesthesia throughout the procedure. Monitoring brain activity through the BIS provides immediate feedback that can guide anesthetic dosing in real-time.