Hypnosis and Closed-Loop Anesthesia System

Influence of Hypnosis on the Propofol Requirement to Induce General Anesthesia

Hypnosis may reduce patient anxiety. The main goal of this study is to determine in what extent, hypnosis decreases propofol requirement to induce induction of general anesthesia.

A particular aspect of this study is that induction is provided by a closed-loop system which delivers propofol according to bispectral index.

Inclusion Criteria:

• adult patients scheduled for a surgical procedure under general anesthesia

Exclusion Criteria:

• pregnancy, breast feeding woman
• allergy to propofol, soy or peanuts
• history of central nervous system disease
• patient receiving a psychotropic treatment
• patient treated by a psychiatrist or a psychologist
• hypovolemia, high cardiovascular risk
• patients with a pace-maker