PISA Calculator

Free calculate PISA (Proximal Isovelocity Surface Area). This is an educational tool only - always consult a healthcare provider.

Echocardiography Values

Results

Enter echocardiography values to calculate PISA

About PISA

  • • EROA = 2π × r² × Va / Vmax
  • • Regurgitant Volume = EROA × VTI
  • • Mild: EROA <0.2 cm²
  • • Moderate: EROA 0.2-0.4 cm²
  • • Severe: EROA >0.4 cm²