Our objective is to assess whether the use of high flow nasal cannula (Vapotherm, Exeter, NH) with monitored anesthesia care (MAC) during an endobronchial ultrasound (EBUS) bronchoscopy procedure will lead to less procedure interruptions, less hypoxic episodes, shorter duration of hypoxic episodes and shorter procedural durations when compared to regular MAC using a regular nasal canula.
age>18 years
patient undergoing EBUS bronchoscopy with moderate conscious sedation.
subjects with previous nasal surgeries
subjects with oxygen saturation <90% on room air prior to procedure
subjects who are pregnant
subjects with known facial fractures or recent facial trauma