PISA effective regurgitant orifice area

HeightcmWeightkgBSA — m²HRbpmRhythmSBPmmHg

EROA = 2π r² × Va / peak regurgitant velocity, with the radius and the CW peak velocity taken at the same moment.

Valve (selects the grading table)Flow-convergence zoneJet direction and numberRegurgitant periodRadius and peak CW velocity timing

PISA radius (r)

Aliasing velocity (Nyquist limit at the PISA baseline) (Va)

Regurgitant jet peak velocity (CW) (V_reg)

Enter PISA radius, Aliasing velocity (Nyquist limit at the PISA baseline), Regurgitant jet peak velocity (CW) to calculate.

Quick tool: no study or demographics required. Values entered here are shared with other tools in this tab until New study.