Mitral stenosis calculators

MVA by PHT (220/PHT) and optional continuity (SV/MV VTI). Includes quick severity ranges.

Inputs

Pressure half-time (PHT)

Mean MV gradient (optional)

mmHg

Optional: continuity equation inputs

LVOT diameter

LVOT VTI

Mitral VTI

Caveat: PHT can be less reliable after valvuloplasty, with significant AR, or altered LV/LA compliance. Always integrate planimetry and clinical context.

Results

MVA (PHT)

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Mean MV gradient

Gradient depends on flow/HR

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Continuity (optional)

Stroke volume (from LVOT)

SV = LVOT area × LVOT VTI

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MVA (continuity)

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Quick severity ranges (adult)

Mild: MVA > 1.5 cm² • Moderate: 1.0–1.5 cm² • Severe: < 1.0 cm²