Methods of oxygen delivery
General principles Always attach oxygen tubing to the (often) green “oxygen” hookup valve in the wall, which is 100% FiO2. Avoid the (often) yellow “air” valve, which is only ambient 21% O2. Each liter of oxygen effectively provides approximately 3% FiO2. When oxygen delivery is at higher-than-standard flow rate (>4L/min) humidification is necessary (just ask […]