What is Fractional Inhalation of Oxygen/ Fraction of inspired oxygen (FiO2) ?

When you are delivering oxygen to your patients on a daily basis (via different oxygen delivering devices), you might have encountered the term FiO2.
It stands for Fraction of inspired oxygen. It means your patient is not only breathing the direct oxygen but also breathing a combination of room air oxygen and supplemental oxygen from the delivering device.

Target Audiences: up to internal medicine training

Credits: Sayar Dr Sein Win,
References: OHCM

Dr Thet Naung, IMT1, Resp, CRH