PISA Proximal Isovelocity Surface Area Calculator

Calculate effective regurgitant orifice area and regurgitant volume using PISA method for mitral or tricuspid regurgitation quantification.

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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 It Works

Calculate effective regurgitant orifice area and regurgitant volume using PISA method for mitral or tricuspid regurgitation quantification

Each component has a specific meaning:

  • PISA method — The pisa method recorded for the scenario being assessed.

Note: Interpret the pisa ero result against the thresholds and context described above.

How to Use

Enter the PISA method for the scenario you are assessing. Calculate effective regurgitant orifice area and regurgitant volume using PISA method for mitral or tricuspid regurgitation quantification. Use the pisa ero result to inform your calculation.

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Frequently Asked Questions