Impact of surgical masks on fraction of inspired oxygen during oxygen therapy depends on the type of oxygen masks and respiratory conditions: volunteer- and simulation-based studies.

ABSTRACT:

Purpose

We investigated the impact of surgical masks (SM) during oxygen therapy using oxygen masks in volunteer- and simulation-based studies.

Methods

Fifteen volunteers wore the Hudson RCI^® or Open-Face Mask^® with/without an SM. The fraction of inspired oxygen concentration (FIO₂), end-tidal CO₂ (EtCO₂), partial pressure of inspired CO₂ (PICO₂), and respiratory rate (RR) were measured. The oxygen flow rate increased from 0 to 10 L/min. In the simulation-based study, FIO₂ was measured using a simulator that reproduced spontaneous breathing. RR was 12 or 24 bpm, and the tidal volume (Tv) was 300, 500, or 700 mL. The effect of oxygen mask fitting conditions was also examined. The primary ou

SUBMITTER: Kinoshita M 

PROVIDER: S-EPMC9202663 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature