The evolution of the techniques and types of anaesthesia brought a lot to the practices of anaesthesia-intensive care, and in particular in the surgical environment, this, is due to the technological developments without occulting the development of the chemistry of gases in favour of anaesthesiology. The suppression of surgical pain, and the medical care of peri-operative patients will experience a disruption in the concepts and satisfaction of patients and surgeons, by providing new techniques in addition to general anesthesia, thus allowing to give a better service to patients and surgeons to succeed in the therapeutic project in the best possible conditions.