Effective FiO2 Conversion for Infants on Nasal Cannula

Weight in kilograms
Percent oxygen in the gas
Flow in LPM

Benaron-Benitz Percent effective FiO2


Example: A hypothetical neonate weighing 2.5 kg with nasal cannula of 1 ¼ liter per minute flow, FiO2 of 0.60.


Answer: Effective FiO2 = 40.5%
Adapted from:

Disclaimer: This calculator only approximates effective inspired oxygen. Actual inspired oxygen will be influenced by the infant's clinical condition and factors noted under "Assumptions". Interpret the calculator in the context of clinical correlation.