Comparison of high‐flow and conventional nasal cannula oxygen in patients undergoing endobronchial ultrasonography

Background Oxygen therapy is required to prevent hypoxaemia during the endobronchial ultrasonography (EBUS) procedure. Aims To compare the effectiveness of oxygen therapy delivered through high‐flow nasal cannula (HFNC) and conventional nasal cannula (CNC) in patients undergoing EBUS. The primary outcome was the proportion of patients who desaturated. Patient compliance and satisfaction were also evaluated. Methods This single‐centre prospective interventional study was conducted in a tertiary hospital among patients who presented to the EBUS unit in 2018 and 2019. Patients were randomly assigned to the HFNC group or the CNC group. Results The study included 170 patients (111 men and 59 women) with a mean age of 58 ± 14 years. The number of patients experiencing desaturation while receiving oxygen was statistically significantly lower (P