Cardiac Output (Thermodilution)

Calculate cardiac output using the thermodilution method from pulmonary artery catheter data (injectate temperature, blood temperature change, and injectate volume) via the Stewart-Hamilton equation.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate cardiac output using the thermodilution method from pulmonary artery catheter data (injectate temperature, blood temperature change, and injectate volume) via the Stewart-Hamilton equation

Each component has a specific meaning:

  • Thermodilution method from pulmonary artery catheter data (injectate temperature — The thermodilution method from pulmonary artery catheter data (injectate temperature recorded for the scenario being assessed.
  • Blood temperature change — The blood temperature change recorded for the scenario being assessed.
  • Injectate volume) via the Stewart-Hamilton equation — The injectate volume) via the stewart-hamilton equation recorded for the scenario being assessed.

Note: Interpret the co thermodilution result against the thresholds and context described above.

How to Use

Enter the thermodilution method from pulmonary artery catheter data (injectate temperature, blood temperature change, injectate volume) via the Stewart-Hamilton equation for the scenario you are assessing. Calculate cardiac output using the thermodilution method from pulmonary artery catheter data (injectate temperature, blood temperature change, and injectate volume) via the Stewart-Hamilton equation. Use the co thermodilution result to inform your calculation.

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Frequently Asked Questions