What is the avO2 diff mL100mL blood if the VO2 is 26 Lmin an

What is the a-vO2 diff (mL/100mL blood) if the VO2 is 2.6 L/min and CO is 10 L/min? 14.

Solution

This can be calculated using \'Fick\'s principle which states that the uptake or release of a substance by any organ is the product of the arterivenous (A-V) concentration difference ( AVO2 Difference) of the substance and the blood flow to that organ. Following is the calculation:

We need to find aVO2 difference that is the difference in O2 content of the blood between arterial blood and venous blood.

VO2 ( Volume of O2 body utilizes each minute)= 2.6 L/min = 2600 mL/min

CO- Cardiac Output (Amount of blood pumped per minute)= 10L/min= 10000mL/min

According to the Fick\'c principle,

CO=VO2/ aVO2 difference x 10                                 ( Where aVO2 difference unit is in mL O2/100 mL blood)

aVO2 difference= 2600/10000 x 10

                           = 0.026 mL/100mL of blood.