Benefits of Optiflow® Device for Preoxygenation Before Intubation in Acute Hypoxemic Respiratory Failure : The PREOXYFLOW Study

"Patients randomized in PREOXYFLOW group will received a four minutes preoxygenation period with Nasal High Flow Therapy (HFT) Optiflow ® (60 l/mn FIO2 = 1) before orotracheal intubation under laryngoscopy after crash induction"

"Patients randomized in STANDARD FACE MASK group will received a four minutes preoxygenation period with a standard face mask (15 l/mn) before orotracheal intubation under laryngoscopy after crash induction. Each hospital involved in this study will use the standard face mask as per its usual practice (no specific trademark requested by this protocol)"