Oxygen content of blood per 100ml = 1.34 * Hgb * SpO2 = ~20ml of O2/100ml of blood
Oxygen deliver is oxygen content * CO = 1L/min
Oxygen consumption = 250ml/min
Extraction ratio is O2 consump/O2 deliver, usual is 25% max is 50%
TV 3-5cc/kg spontaneous and 7-10 cc/kg mechanical
MV 50-70cc/kg/min
