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Calcimator

Valve Area Calculator

Calculate aortic or mitral valve area using the Gorlin equation from cardiac catheterization data.

Inputs

L/min
bpm
ms
mmHg

Results

Valve Area

0.79 cm²

Stenosis Grade

3

Transvalvular Flow222 mL/s
Peak Velocity (Bernoulli)12.65 m/s
Dimensionless Index (approx)0.23
How to Use This Calculator
  1. Enter cardiac output (L/min), heart rate (bpm), and systolic ejection period or diastolic filling period (ms).
  2. Set mean transvalvular pressure gradient (mmHg) and select valve type (aortic or mitral).
  3. Review Valve Area (cm²), Stenosis Grade, Transvalvular Flow (mL/s), and Peak Velocity (m/s).
  4. Aortic valve area < 1.0 cm² = severe stenosis; mitral valve area < 1.5 cm² = severe stenosis.
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