Cardiac Output Calculator

Cardiac Output Calculator calculator can be used to estimate cardiac output (CO) using the Fick principle. It's commonly used in clinical settings to assess heart function.

Input Parameters

Calculation Results

Calculation Formula

Cardiac Output (CO) = VO₂ / (Oxygen Extraction Ratio × 100)

Where:
CO = Cardiac Output (mL/min)
VO₂ = Oxygen Uptake (mL/min)
Oxygen Extraction Ratio = Fraction of oxygen extracted by the tissues

Result

Cardiac Output: -- mL/min

Cardiac Output Calculator Calculator Usage Guide

Learn how to use the Cardiac Output Calculator calculator and its working principles

How to Use This Calculator

  1. Enter the Oxygen Uptake (VO₂) value in mL/min. This represents the amount of oxygen consumed by the body per minute.
  2. Enter the Oxygen Extraction Ratio in percentage. This is the fraction of oxygen extracted from the blood by the tissues.
  3. Click the "Calculate" button to compute the cardiac output.
  4. The result will be displayed in mL/min.

Understanding the Fick Method

The Fick method estimates cardiac output by measuring oxygen uptake and applying the oxygen extraction ratio. The formula used is:

CO = VO₂ / (Oxygen Extraction Ratio × 100)

In this formula:

  • Cardiac Output (CO) is the amount of blood pumped by the heart per minute
  • VO₂ is the oxygen consumption rate of the body
  • Oxygen Extraction Ratio is the percentage of oxygen removed from the blood as it passes through the tissues

Normal Values

Normal cardiac output for an adult at rest is typically between 4.5 and 6.0 L/min (or 4500-6000 mL/min).

When to Use This Calculator

This calculator is useful in clinical settings for:

  • Assessing heart function
  • Monitoring patients with heart failure
  • Evaluating patients during anesthesia
  • Cardiac surgery assessment