A 40 year old female underwent surgery. Postoperatively she told the anaesthetist that she was aware of preoperative events. Individual intraoperative awareness is evaluated by –: (A) Pulse oximetry, (B) Colour doppler, (C) Bispectral imaging, (D) End tidal CO2
Answer is C. Intraoperative awareness (depth of anaesthesia) is monitored by the Bispectral index.