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British Journal of Anaesthesia, 2004, Vol. 92, No. 1 1-3
© 2004 The Board of Management and Trustees of the British Journal of Anaesthesia

Editorial I

Is there any alternative to the Bispectral Index Monitor?

Deepak K. Tempe*,1 and L. Satyanarayana2

1 Department of Anaesthesiology, G.B. Pant Hospital (University of Delhi), New Delhi 110002, India2 Division of Epidemiology and Biostatistics, Institute of Cytology and Preventive Oncology, Maulana Azad Medical College Campus, New Delhi 110002, India

*Corresponding author. E-mail: tempedeepak{at}hotmail.com

The first 150 words of the full text of this article appear below.

The importance of having a reliable indicator of depth of anaesthesia has long been realized by anaesthetists.1 Initially, the haemodynamic response to laryngoscopy, tracheal intubation and/or skin incision was used to assess the anaesthetic depth. Subsequently, electroencephalography (EEG) and the various forms of processed EEG (e.g. spectral edge frequency and total power) were used, none of which was very successful. In 1997, Aspect Medical Systems (Natick, MA, USA) introduced a device that displays a single ‘bispectral index’ or a BIS value, which measures the depth of anaesthesia. Over the years, the usefulness of the BIS monitor in having a high probability of correctly predicting the absence of consciousness during general anaesthesia has been recognized.2–4 Although there is no evidence that monitoring the depth of unconsciousness prevents awareness, it is conceivable that, by maintaining a sufficient depth of unconsciousness, this will be achieved. Indeed, the BIS monitor has established itself mainly . . . [Full Text of this Article]


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