Gorlin Equation (Last Updated 2/6/2024)
-Can be used to calculate the aortic valve area and mitral valve area
AVA =
Cardiac Output
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Heart Rate * SEP * 44.3 * (Square Root of Mean Gradient)
-Where: SEP = Systolic Ejection Period (sec/beat)
MVA =
Cardiac Output
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Heart Rate * DFP * 37.7 * (Square Root of Mean Gradient)
-Where: DFP = Diastolic Filling Period (sec/beat)
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References: