Study #1 (Oxygen Transport Studies)
A 63-year-old woman with chronic obstructive pulmonary disease demonstrates the following clinical data:

-Based on the above information, the patient's total oxygen delivery is about:

Question

Study #1 (Oxygen Transport Studies)
A 63-year-old woman with chronic obstructive pulmonary disease demonstrates the following clinical data:
 
-Based on the above information, the patient's total oxygen delivery is about:

Quizplus · Accepted Answer

To calculate the total oxygen delivery, we must use the equation: 
Total Oxygen Delivery (mL/min) = Cardiac Output (L/min) x (arterial oxygen content - venous oxygen content) x 10
Cardiac output can be calculated using Fick's principle:
Cardiac Output (L/min) = VO2 (mL/min)/ arterial oxygen content - venous oxygen content
Using the given data, the VO2 is 250 ml/min, and the oxygen content for arterial and venous blood is 19.4 and 14 ml/dL respectively.
Cardiac Output = 250/(19.4-14) = 25 L/min

Next, we calculate the oxygen delivery:
Oxygen Delivery (mL/min) = 25 L/min x (19.4-14ml/dL) x10 = 970 ml/min
Therefore, the closest answer is C which is 971 ml/min.