Health

Gorlin Formula Calculator

Calculate valve area from catheterization data.

Cardiac Output (mL/min)

Heart Rate (bpm)

Filling/Ejection Period (sec/beat)

Mean Gradient (mmHg)

Valve

Valve Area—

Flow—

Valve Area = CO / (HR × SEP × C × √gradient)
C = 44.3 (aortic) or 37.7 (mitral)