Aortic Valve Area (AVA) Calculator
Formula (Continuity Equation)
AVA = (CSA_LVOT × VTI_LVOT) ÷ VTI_AV
Where CSA_LVOT = π × (LVOT Diameter ÷ 2)²
Input Parameters
Enter left ventricular outflow tract diameter in centimeters
Enter velocity time integral at LVOT in centimeters
Enter velocity time integral at aortic valve in centimeters
Results
Calculated AVA
— cm²
CSA LVOT
— cm²
