i
MV PGmax = 4 x MV Vmax²
MV Vmax: CW, Apical 4C view.

MV PGmax -  maximum Mitral Valve Pressure Gradient
MV Vmax -  maximum Mitral Valve Velocity


Example:
MV Vmax = 1,87 m/s
MV PGmax = 4 x 1,87² = 14 mmHg