3. Physiology
        3.13. Respiratory
            3.13.3. Gas carriage
                3.13.3.4. Oxygen
3.13.3.4.3. Oxygen flux

Oxygen flux

O2 flux
= Amount of oxygen delivered to the peripheral tissues per minute.

Oxygen flux

O2 flux
= O2 bound to Hb + Dissolved O2

Oxygen bound to Hb

Oxygen bound to Hb
= Cardiac output x [Hb] x SO2 x k

Dissolved O2

Dissolved O2
= CO x pO2 x 0.03

Total oxygen flux

Arterial O2 flux is
= 5 x 150 x 0.98 x 1.34 + 5 x 100 x 0.03
= 984.9 + 15
= appr. 1000mL O2 per min

 

Similarly,

Mixed venous O2 delivery rate is
= 5 x 150 x 0.75 x 1.34 + 5 x 40 x 0.03
= 753.75 + 6
=759.75
= appro. 750mL O2 per min

 

Summary

NB:

Or

Thus,

 



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