Does a Customized Intubation Facility Reduce Incidence of Difficulty

The idea of this study is to demonstrate that the position of the head at a comfort height spontaneously expressed by the patient, between Jackson's amended position or Ramp position, significantly improves the quality of the intubation gesture. This patient position can be easily achieved by placing a compressed air mattress under the patient's trunk - AirPal RAMP ™ mattress. Thus the investigators can assume that the appropriate positioning and use of a video laryngoscope (McGrathR Mac) places the patient in the best anatomical configuration to breathe and, indirectly to facilitate control of the airways, especially for those with a risk of difficult airway management.