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BIS Monitoring

Bispectral Index (BIS) monitors produced by Aspect
Medical Systems has been extensively studied to help
detect awareness during a surgical procedure.  While it
has been found to lower the incidence of recall, it can
lead to a false sense of security as prevention is not
100%, which you can read from the papers below.  We
do not endorse this or any other medical device on our
web site.

Aspect Medical Systems Information about BIS(R)
monitors from the manufacturer's web site.

Practice Advisory for Intraoperative Awareness and
Brain Function Monitoring  Guidelines published by the
ASA to prevent anesthesia awareness.  

A Case of Awareness Despite an "Adequate Depth of
Anesthesia" as Indicated by a Bispectral Index(R)
Monitor A report of surgical awareness in a high risk
Anesthesia & Analgesia

In Search of A Reliable Awareness Monitor Risk of
awareness during cardiac surgery and BIS monitoring.  
Anesthesia & Analgesia

Is More Information Better?  Intraoperative Recall With A
Bispectral Index Monitor In Place A case report of
surgical recall despite BIS monitoring.

Brain Wave Monitors A very brief synopsis of the way
BIS monitors work and the ASA's position on its use.
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