High - Flow Nasal Cannula Versus Conventional Nasal Cannula During Endobronchial Ultrasound Procedure

"High flow nasal cannula (HFNC), a device first introduced in neonates and pediatric care, is currently used in a wide range of indications in adult respiratory and critical care medicine (5-7). It is a relatively new method in bronchoscopy with several notable theoretical advantages over low flow oxygen via conventional nasal cannula (CNC):~* High flow up to 60 liters per minute ensures a more stable FiO2 and better matches the increased patient's inspiratory flow~* High flow generates a small positive expiratory airway pressure (up to 5 cm H2O) which could stabilize the upper airways during sedation and have a beneficial effect in the lower airways~* High flow reduces dead space in the upper airways and increases alveolar ventilation."

Standard method for supplementing oxygen during EBUS bronchoscopy