C. **Apneic technique using high flow nasal cannula (HFNC)**

In our center we use this technique in 95% of the benign laryngeal lesion's surgery (**Figure 8**). High flow nasal cannula (HFNC) has been shown beneficial in pre-oxygenation, oxygenation after extubation & in the treatment of respiratory failure and heart failure. Recently HFNC proved to provide a very good oxygenation & ventilation for the patients who performing various upper airway surgeries without the need for the jet ventilation or endotracheal intubation. Delivery of O2 via (HFNC) is an exciting & emerging therapy in acute adult medical practice. Humidified and worm O2 is delivered at flow rate of up to 60–80 L/min.
