Résumé
In operative rooms, high-flow nasal cannula oxygen (HFNO) can be used in various settings: during the intubation procedure (for preoxygenation and/or apneic oxygenation) or during procedures without intubation (oropharyngeal surgeries, digestive upper or lower endoscopy). When used in operating rooms, HFNO is often called “transnasal humidified rapid-insufflation ventilatory exchange (THRIVE).” The main interest of HFNO is to provide apneic oxygenation, ensuring the administration of oxygen even without ventilation. It should be used with caution for preoxygenation, as the efficacy for providing reserves in oxygen may be lower than with preoxygenation with a facial mask tightly applied. In case of desaturation, HFNO cannot replace bag-valve mask ventilation.