Comparison of two supplemental oxygen methods during gastroscopy with propofol mono-sedation in patients with a normal body mass index

Abstract

BACKGROUND: its built-in wall channel. The available evidence indicates that with a low oxygen flow, compared with nasal cannula, the WNJT does not decrease the occurrence of hypoxemia during upper gastrointestinal endoscopy with propofol sedation. To date, there has been no study assessing the performance of WNJT for supplemental oxygen during upper gastrointestinal endoscopy with sedation when a moderate oxygen flow is used. AIM: To determine whether the WNJT performs better than the nasal prongs for the prevention of hypoxemia during gastroscopy with propofol mono-sedation when a moderate oxygen flow is provided in patients with a normal body mass index. METHODS: during gastroscopy was recorded. The primary endpoint was the incidence of hypoxemia or severe hypoxemia during gastroscopy. RESULTS: during gastroscopy was significantly higher (98%; interquartile range, 97-99) in the WNJT group than in the nasal cannula group (96%; interquartile range, 93-98). Epistaxis by device insertion in the WNJT group occurred in 7 patients but stopped naturally without any treatment. The two groups were comparable in terms of the satisfaction of physicians, anesthetists and patients. CONCLUSION: With a moderate oxygen flow, the WNJT is more effective for the prevention of hypoxemia during gastroscopy with propofol mono-sedation compared with nasal prongs, but causing slight epistaxis in a few patients.