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Cardiac Output Calculator (Fick Equation)

Health & Fitness

Calculate cardiac output using the Fick equation, based on oxygen consumption and arteriovenous oxygen content difference.

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mL/min
50 mL/min1,000 mL/min
mL O2/dL
5 mL O2/dL25 mL O2/dL
mL O2/dL
1 mL O2/dL22 mL O2/dL

Cardiac Output

5.00

Cardiac output via the Fick equation. Educational reference only, not a substitute for clinical judgment.

Interpretation

General interpretation against the typical 4-8 L/min adult range. Within typical adult range

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Odeh Ahwal

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Odeh Ahwal
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Frequently Asked Questions

What is the Fick equation used for?

The Fick equation estimates cardiac output, the volume of blood the heart pumps per minute, based on how much oxygen the body consumes and how much oxygen content differs between arterial and venous blood.

How are the oxygen content values normally obtained?

Arterial and mixed venous oxygen content are typically derived from blood gas measurements and hemoglobin-based oxygen content calculations, often requiring specialized catheter access such as a pulmonary artery catheter for the venous sample.

What is a normal cardiac output range?

A typical adult resting cardiac output is roughly 4 to 8 liters per minute, though the more size-adjusted cardiac index is often used for individual patient comparison.

Is this calculator a substitute for medical advice?

No. This is an educational reference implementation of the Fick equation, not a substitute for a physicians clinical assessment.

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