Figure 1From: High-flow nasal cannula oxygen versus non-invasive ventilation in patients with acute hypoxaemic respiratory failure undergoing flexible bronchoscopy - a prospective randomised trialStudy workflow. Abbreviations: ABG, arterial blood gas analysis; FiO2, fraction of inspired oxygen; HFNC, high-flow nasal cannula; NIV, non-invasive ventilation.Back to article page