Cardiac Output

 

Input
 

O2 Consumption		L/min L/sec mL/hr mL/min mL/sec
Hgb		g/dL gm/L gm/dL mcg/dL mg% mg/dL mg/mL ng/mL
O2Sat		% fraction ratio
PaO2		Pascal atm bar cmH2O cmHg ftH2O gm/sqcm inH2O inHg kPa mbar mmHg psi torr
O2vSat		% fraction ratio
PvO2		Pascal atm bar cmH2O cmHg ftH2O gm/sqcm inH2O inHg kPa mbar mmHg psi torr

 

Results
 

CaO2		Vol% mL/L mL/dL
CvO2		Vol% mL/L mL/dL
CO		L/min L/sec mL/hr mL/min mL/sec
Decimal Precision   0 1 2 3

 

 

Notes

• In this calculator, mcg is the abbreviation for micrograms.
• 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 250cc/min in a healthy person

 
Equations used
 

CaO2 = ( Hgb * 13.4 * O2Sat / 100 ) + ( PaO2 * 0.031 )

CvO2 = ( Hgb * 13.4 * O2vSat / 100 ) + ( PvO2 * 0.031 )

CO = O2Consumption / (CaO2 - CvO2)