EROA Calculator

Calculate Effective Regurgitant Orifice Area (EROA) to assess valvular regurgitation severity. Evaluate mitral or tricuspid valve regurgitation. This is an educational tool only - always consult a healthcare provider.

Echocardiography Measurements

Results

Enter measurements to calculate EROA

About EROA

  • • EROA = Regurgitant Volume ÷ VTI
  • • Mitral: Mild <20, Moderate 20-40, Severe >40 mm²
  • • Tricuspid: Mild <20, Moderate 20-40, Severe >40 mm²
  • • Used to assess regurgitation severity