Modified HFNC Oxygen in Patients Undergoing Bronchoscopy.

Modified High-flow Nasal Cannula Oxygen in Patients Undergoing Bronchoscopy.

The purpose of this study is to determine whether the Modified High-flow nasal cannula is effective in the oxygen of the patients undergoing bronchoscopy.

Inclusion criteria

1. age more than 18 years old;
2. need for bronchoscopy for diagnosis purpose.

Exclusion criteria

1. peripheral arterial pulse oximetry was < 90%
2. platelet count < 60 × 109/L;
3. nasopharyngeal obstruction or blockage.