Peak velocity of the transprosthetic valves flow are 1, 54±0, 28 m / s; mean velocity are 0, 96 ± 0, 37 m / s; peak gradient are 11, 23 ± 4, 92 mmHg; mean gradient are 3, 85 ± 1, 85 mmHg; PHT of the transprothetic flow are 84, 79 ± 18, 63ms; effective orifice area calculated from PHT are 3, 01± 0, 58 cm2; the ratio of the transprosthetic velocity time integral / the left ventricular out tract velocity time integral are 1, 49 ± 0, 52.