Mitral Valve Area by Pressure Half-Time Calculator

Calculates mitral valve area (MVA) by echocardiographic pressure half-time method: MVA = 220 / PHT (ms), where PHT is the time for the peak diastolic pressure gradient to decrease by half. Normal MVA 4–6 cm²; severe mitral stenosis <1.0 cm².

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How to Use

Enter the values for the scenario you are assessing. Calculates mitral valve area (MVA) by echocardiographic pressure half-time method: MVA = 220 / PHT (ms), where PHT is the time for the peak diastolic pressure gradient to decrease by half. Normal MVA 4–6 cm²; severe mitral stenosis <1.0 cm². Use the mva pressure half-time result to inform your calculation.

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