Fick Calculator for Cardiac Output

In milliliters per minute (mL/min).

In milliliters per liter of blood (mL/L).

In milliliters per liter of blood (mL/L).

Cardiac Output (CO)

N/A

This calculator is for educational purposes only and not for clinical use.

Calculate Cardiac Output Using the Fick Principle

The Fick principle is a classic method used in physiology to determine cardiac output (the amount of blood the heart pumps per minute). It is based on the relationship between oxygen consumption, and the oxygen levels in arterial and venous blood.

The Fick Principle Formula:

Cardiac Output (CO) = Oxygen Consumption (VO2) / Arteriovenous O2 Difference (CaO2 - CvO2)

To use this calculator, you will need the following values:

  • Oxygen Consumption (VO2): The rate at which the body uses oxygen, typically measured in mL/min. This is often estimated based on age, sex, and body surface area, or measured directly.
  • Arterial O2 Content (CaO2): The amount of oxygen in the blood leaving the heart (arterial blood), measured in mL/L.
  • Venous O2 Content (CvO2): The amount of oxygen in the blood returning to the heart (mixed venous blood), measured in mL/L.
  • The calculator will provide the cardiac output in liters per minute (L/min). This tool is intended for educational purposes to help understand the physiological principles of cardiac output.

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