Your activity: 126 p.v.
your limit has been reached. plz Donate us to allow your ip full access, Email:

Calculator: Cardiac output in adults (conventional and SI units)

Calculator: Cardiac output in adults (conventional and SI units)

O2 consumption  

Important: Inputs must be complete to perform calculation.

Cardiac output  
Decimal precision  


  • In this calculation, arterial oxygen content CaO2 and venous oxygen content CvO2 are calculated by using both oxygen saturation and oxygen tension of both blood samples.
  • O2 consumption may be determined by:
    • Separate calculation
    • Machine measurement
    • Estimation/assumption of approximately 250 mL/min in a healthy person
  • In this calculator, mcg is the abbreviation for micrograms.
  • Hgb: hemoglobin; O2Sat: oxygen saturation (arterial); PaO2: partial pressure of oxygen (arterial); O2vSat: oxygen saturation (venous); PvO2: partial pressure of oxygen (venous); CaO2: oxygen content (arterial); CvO2: oxygen content (venous).

Equations used
CaO2 = ( Hgb * 13.4 * O2Sat / 100 ) + ( PaO2 * 0.031 )
CvO2 = ( Hgb * 13.4 * O2vSat / 100 ) + ( PvO2 * 0.031 )
Cardiac output = O2 consumption / (CaO2 - CvO2)


Only digits 0 to 9 and a single decimal point (".") are acceptable as numeric inputs. Attempted input of other characters into a numeric field may lead to an incorrect result.

Information on this page may not appear correctly if printed.

Legal Notices and Disclaimer

All information contained in and produced by the EBMcalc system is provided for educational purposes only. This information should not be used for the diagnosis or treatment of any health problem or disease. THIS INFORMATION IS NOT INTENDED TO REPLACE CLINICAL JUDGMENT OR GUIDE INDIVIDUAL PATIENT CARE IN ANY MANNER. Click here for full notice and disclaimer.

EBMcalc is Copyright © 1998-2023 Foundation Internet Services, LLC

Topic 13463 Version 9.0