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


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

 
Input
 
O2 consumption  
Hgb  
O2Sat  
PaO2  
O2vSat  
PvO2  

 
Results
 
Important: Inputs must be complete to perform calculation.

 
 
CaO2  
CvO2  
Cardiac output  
 
Decimal precision  

 
 

 
Notes
  • 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.

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