British Journal of Anaesthesia, 2003, Vol. 91, No. 6 771-772
© 2003 The Board of Management and Trustees of the British Journal of Anaesthesia
Editorial
How low can we go?
1 Peninsula Medical School, ITTC Building, Tamar Science Park, Davy Road, Plymouth PL6 8BX, UK E-mail: robert.sneyd@pms.ac.uk
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Intraoperative awareness is a terrifying experience, which patients fear and anaesthetists are anxious to avoid; any clinician who doubts this should read a first hand account.1 Since the early 1990s, the Bispectral Index (BIS) has been developed as a measure of hypnosis during anaesthesia and sedation. As BIS is a linearized and monotonic measure, clinicians have become comfortable with the idea that an increase in BIS may warn of actual or impending awareness. Although
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