Assessment of Preoxygenation using Real-Time End-Tidal Oxygen Measurements Versus Single-Breath End-Tidal Oxygen Measurements in Healthy Volunteers

Supplemental oxygen led to an overestimation of NC EtO2 across both groups, with NRBM more than NIV. The correlation between SB EtO2 and NC EtO2 suggests NC EtO2 may be useful in assessing preoxygenation in real-time. Further study is needed to examine its clinical efficacy in preventing desaturation events during endotracheal intubation in the ED.