Reference
FiO2 and A a Gradient Calculator
Inspired Oxygen Fraction FiO2 PaO2 arterial oxygen pressure mmHg PaCO2 arterial carbon dioxide pressure mmHg Atmospheric Pressure Patm mmHg Water Vapor Pressure PH2O mmHg Respiratory Quotient RQ Explanation and Clinical Context This calculator estimates the inspired oxygen fraction FiO2 together with the alveolar to arterial oxygen gradient which provides an assessment of gas exchange efficiency in the lungs. The alv