High-Flow Nasal Cannula and Mandibular Advancement Bite Block Decrease Hypoxic Events during Sedative Esophagogastroduodenoscopy: A Randomized Clinical Trial

Figure 1

Study set-up. Left: standard bite block group; middle: HFNC group; right: MA bite block group. HFNC: high-flow nasal cannula; MA: mandibular advancement; A: nasal cannula; B: capnography catheter; C: standard bite block; D: high-flow nasal cannula; E: oxygen cannula; F: mandibular advancement bite block.