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

ABSTRACT:

Objective

Preoxygenation decreases morbidity for patients requiring endotracheal intubation. However, rigorous means for determining adequate pre-oxygenation are limited in the emergency department (ED). End-tidal oxygenation (EtO₂) monitoring could potentially improve preoxygenation in the ED. The accuracy of nasal cannula (NC) EtO₂ in patients receiving supplemental oxygen is unknown. Our study examined the correlation between NC EtO₂ and single-breath (SB) EtO₂.

Methods

Healthy volunteers were randomized to receive supplemental oxygen via a nonrebreather mask (NRBM) or a noninvasive ventilation mask (NIV). Participants underwent 3-minute trials at 3 different settings: NRBM at 15 liters per minute (LPM), 35 LPM, and 55 LPM, or N

SUBMITTER: Lindsey S 

PROVIDER: S-EPMC11919592 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature