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Uptodate Reference Title
Grading severity of mitral stenosis by echocardiography
Grading severity of mitral stenosis by echocardiography
Progressive*
Severe¶
Very severeΔ
Valve area (cm2)
>1.5
<=1.5
≤1
Diastolic pressure half-time (ms)
<150
≥150
≥220
Mean gradient◊ (mmHg)
<5
>5
>10
Pulmonary artery systolic pressure (mmHg)
<30
>30
>50
*This category was previously labeled "mild". ¶This category was previously labeled "moderate". ΔThis category was previously labeled "severe". ◊Transmitral mean pressure gradient ranges in sinus rhythm are shown, but these vary with heart rate and forward flow.
