Evaluation of the effects of 35%/15%/50% N2O/N2/O2 mixtures on the area of hyperalgesia
induced by remifentanil in the CCES (Continuous Cutaneous Electrical Stimulation) model in 20
healthy volunteers.
The duration of participation for each volunteer is expected to be around 9 weeks with the
performance of 4 experimental session 2 weeks apart.
The selection visit will last half a day; each experimental session will last half a day; the
study end will last 2 hours maximum.