Hypothesis: There is a statistically measurable correlation between qNOX and rough clinical signs of insufficient anti-nociception such as movements during Laryngeal Mask Airway (LMA) insertion, skin Incision, LMA removal. It will reduce the problem of anticipating the nociception in patients undergoing general anesthesia. Objectives: 1. to compare two indexes of hypnosis, the qCON (Quantium Medical, Spain) with the Bispectral index (BIS™) (Covidien, Boulder CO. USA), in patients undergoing surgery under sedation and general anesthesia. 2. to assess the qNOX index of pain/nociception (Quantium Medical, Barcelona, Spain) and the qCON index of hypnosis. 3. to assess qNOX reliability as a specific indicator of response to nociceptive stimulation.
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Movements as Response to Laryngeal Mask Airway (LMA) Insertion
Timeframe: Approximately 10 minutes
Number Coughing/Bucking
Timeframe: Intraoperative period (30 minutes to 3 hours)