What is this patient's cardiac output? The following measurements - ProProfs Discuss
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What is this patient's cardiac output? The following measurements were obtained in a male patient: Heart rate: 70 beats/min, Pulmonary vein [0 = 0.24 ml 02/m1, Pulmonary artery [0 = 0.16 ml 02/ml, Whole body 02 consumption: 500 ml/min.



A. 1.65 L/min
B. 4.55 L/min
C. 5.00 L/min
D. 6.25 L/min
E. 8.00 L/min
Asked by Berry, Last updated: Jan 06, 2020

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Block 3 Cardio Physio BRS

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2 Answers

C. Jackson

C. Jackson, Content Developer, Austin

Answered Jan 04, 2019

The correct answer here would be arrived at by dividing the total oxygen consumption by the arteriovenous oxygen gradient, according to what I could find on the internet about this kind of calculation.

Now, I’m not an expert in nursing or in these measurements, so I cannot tell you which measurements are needed out of what is given. If I look at the previous answer, they got 6.25 L/min, or answer D, and they used all of the measurements given.

In light of this, I am almost positive that answer D is the correct answer, especially as I have not found a calculator that asks for these specific measurements when calculating the cardiac output of a patient with the provided numbers.

 

John Smith

John Smith

Answered Sep 09, 2016

6.25 l/min-cardiac output is calculated by the fick principle if whole body oxygen (02) consumption and [02] in the pulmonary artery and pulmonary vein are measured. mixed venous blood could substitute for a pulmonary artery sample, and peripheral arterial blood could substitute for a pulmonary vein sample. heart rate is not needed for this calculation. cardiac output = 500 ml/min_______________ 0.24 ml 02/ml 0.16 ml 02/ml = 6250 ml/min or 6.25 l/min
 

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