My replacement aortic valve is exactly 11 years old today, it was done on the same day of the week too, Monday 6th January 2014. I never expected it to last this long as at 3 years old the pressure gradients across the valve became high and my aortic valve effective orifice area very small….been that way now for 8 years and absolutely no symptoms at all. I’ll have my regular annual consultation with cardiologist for echo done by him in March, or before if I get any problems.