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Table 1 Measured, estimate and calculated parameters in the diffusion resistance model

From: Cardiac output estimation using pulmonary mechanics in mechanically ventilated patients

Directly Measured Parameters Estimated Parameters Calculated Parameters
Respiratory Frequency (f) Dead Space (Vd) Shunt (fs)
Inspired Oxygen Content (FiO2)   Diffusion Resistance (R)
Expired Oxygen Content (FeO2)   
Tidal Volume (Vt)   
Atmospheric Pressure (PB)   
Pulse or Arterial Oxygen Saturation (SaO2)   
Cardiac Output (CO)   
Haemoglobin (cHb)   
Methaemoglobin (cMetHb)   
Carboxyhaemoglobin (cCOHb)