Gorlin Equation (Last Updated 2/6/2024)

-Can be used to calculate the aortic valve area and mitral valve area

AVA =                                 Cardiac Output
             -----------------------------------------------------------------------
             Heart Rate * SEP * 44.3 * (Square Root of Mean Gradient)

-Where: SEP = Systolic Ejection Period (sec/beat)


MVA =                                 Cardiac Output
             -----------------------------------------------------------------------
             Heart Rate * DFP * 37.7 * (Square Root of Mean Gradient)

-Where: DFP = Diastolic Filling Period (sec/beat)


Cardiac Output (mL/min):
   
Heart Rate (bpm):
   
Systolic Ejection Period (sec/beat):            Diastolic Filling Period (sec/beat):
                                                         
Mean Gradient (mmHg):
   


AVA:                                                               MVA:
                                                          


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