Mild

Moderate

Severe

Vena contracta width (mm)

<3

4-6

≥7

Effective regurgitant orifice area (cm2)

<0.10

0.1-0.29

≥0.30

Regurgitant volume (mL)

<30

30-59

≥60

Regurgitant fraction (%)

<30

30-49

≥50