Background Awareness during anesthesia is a serious complication with potential long-term psychological consequences. Use of the bispectral index (BIS), developed from a processed electroencephalogram ...

Patients are more likely to experience unintended intraoperative awareness under general anesthesia with the bispectral index protocol than the end-tidal anesthetic-agent concentration, according to a ...

The bispectral index monitor places a sensor on a patient’s forehead that monitors brain activity while under anesthesia. (Washington University Department of Anesthesiology) A widespread method used ...

Patients say it feels like being trapped in a corpse: They wake up during surgery, unable to move or scream. Some remember hearing their surgeons talk, and a few recall feeling intense pain. Some ...

Anesthesia awareness, or accidental awareness, is the rare but possible experience of regaining consciousness while under an anesthetic. Some people may experience a general awareness, while others ...

WATERLOO - On the day of his heart surgery in April 2006, Tom Hagarty went under general anesthesia at 6 a.m. and woke up at 11 p.m. While doctors at Allen Hospital worked to unblock five of his ...