Cardiac Output — Fick Method

Direct Fick Method for Cardiac Output and Index Calculation

Oxygen Consumption (VO₂)

mL/min

Use estimated VO₂Simplified estimate: 125 × BSA (mL/min) or 3 mL/kg/min × weight

Arterial O₂ Saturation (SaO₂)

Mixed Venous O₂ Saturation (SvO₂)

From PA catheter

Hemoglobin

g/dL

Body Surface Area (BSA)

m²

Auto-calculated from height/weight if provided above, or enter manually

VO₂ Used —

CaO₂ (arterial O₂ content) —

CvO₂ (venous O₂ content) —

A-V O₂ Difference —

Cardiac Output (CO) —

Cardiac Index (CI) —

Enter hemodynamic and oxygen saturation data above.