The development of a flexible bronchoscope with a channel dedicated to O2 administration might allow optimization of the oxygen supplementation during bronchoscopy, which reduces the risk of per- and peri-procedural hypoxemia. The investigators will conduct a pilot study corroborating the hypothesis that tracheal supplementation of oxygen during flexible bronchoscopy is advantageous in comparison to nasal cannula supplementation.~The concept of our trial consists of a mono-centric observational study performed in the endoscopy suite of the Respiratory Division, University Hospitals Leuven. All patients will be given informed consent before inclusion.~The aim of the present study is to measure the time to correction of O2 saturation when in case of desaturation below 90%, O2 administration is switched from the nasal to the tracheal route at a similar flow rate.
The aim of the present study is to measure the time to correction of O2 saturation when in case of desaturation below 90%, O2 administration is switched from the nasal to the tracheal route at a similar flow rate.