Indicator | Mild | Moderate | Severe |
---|---|---|---|
Left sided valve stenosis | |||
Aortic stenosis | |||
Jet velocity (m/s) | Less than 3.0 | 3.0–4.0 | >4.0 |
Mean gradient (mm Hg) | <25 | 25–40 | >40 |
Valve area (cm2) | >1.5 | 1.0–1.5 | <1.0, Critical <0.6 |
Mitral stenosis | |||
Mean gradient (mm Hg) | <5.0 | 5.0–10.0 | >10.0 |
Pulmonary artery systolic pressure (mm Hg) | <30 | 30–50 | >50 |
Valve area (cm2) | >1.5 | 1.0–1.5 | <1.0 |
Right sided valve stenosis | |||
Severe tricuspid stenosis | Valve area less than 1.0 cm2 | ||
Severe pulmonic stenosis | Jet velocity>4.0 m/s or maximum gradient>60 mm Hg |