QP/QS Ratio Calculator

Free calculate QP/QS ratio. This is an educational tool only - always consult a healthcare provider.

Hemodynamic Values

Results

Enter hemodynamic values to calculate QP/QS

About QP/QS Ratio

  • • QP/QS = Pulmonary Flow / Systemic Flow
  • • Normal: 1.0 (no shunt)
  • • 1.0-1.5: Small shunt
  • • 1.5-2.0: Moderate shunt
  • • >2.0: Large shunt