Find actual percentage of O2 on Non-Blended Low Flow Nasal Cannula Here!
Simply input the child's weight (in kg), his or her respiratory rate, the current O2 flow rate and percent O2 at the blender.
FiO2 = ((F x (B - 21) / 100)+(0.21 x R x W x 5.5)) / (R x W x 0.055)
The equation has four variables: weight in kg (W) , respiratory rate (R), gasflow (F) and percentage of oxygen in the gas (B).
A tidal volume of 5.5mL/kg is assumed.