New insight into brain responses during anesthesia and surgery: (1)
- BIS can help clarify the distinction between brain and spinal cord responses, enabling you to manage anesthetic goals of hypnosis, analgesia and immobility
- Because BIS measures electrical activity in the brain, it provides a direct correlation with depth of consciousness (hypnosis)
- Responses to surgical stimulation are frequently indicators of the need for additional analgesia. These responses are often mediated at the spinal cord
- BIS enables you to assess consciousness and sedation separately from cardiovascular reactivity
How BIS Works:
- Raw EEG information is obtained via a sensor placed on patient's forehead
- The BIS system processes the EEG information and calculates a number between 0 and 100 that provides a direct measure of the patient's level of consciousness
- A BIS value near 100 indicates the patient is fully awake
- A BIS value of zero indicates the absence of brain activity
Improving care and contributing to cost savings in the OR:
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References:
- Dershwitz M. Should we measure depth of anesthesia? Seminars in Anesthesia:Perioperative Medicine and Pain 2001; 20 (4): 246-256.